Compact I/O Analog Modules 1769-IF4, -IF8, -OF2, -OF8C, and -OF8V User Manual
Important User Information Solid state equipment has operational characteristics differing from those of electromechanical equipment. Safety Guidelines for the Application, Installation and Maintenance of Solid State Controls (Publication SGI-1.1 available from your local Rockwell Automation sales office or online at http://www.ab.com/manuals/gi) describes some important differences between solid state equipment and hard-wired electromechanical devices.
Summary of Changes The 1769-IF8, -OF8C, and -OF8V modules have been added to this manual since the last printing. To help you find new and updated information in this release of the manual, we have included change bars as shown next to this paragraph.
Summary of Changes 2 Notes: Publication 1769-UM002B-EN-P - July 2005
Table of Contents Preface Who Should Use This Manual. . . . . . . . . . . . . . . . . . . . . . . . . . How to Use This Manual. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Manual Contents . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Related Documentation. . . . . . . . . . . . . . . . . . . . . . . . . . . . Conventions Used in This Manual . . . . . . . . . . . . . . . . . . . . . . Rockwell Automation Support . . . . . . . . . . . . . . . . . . . . . . . . .
Table of Contents ii Field Wiring Connections . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Grounding . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . System Wiring Guidelines . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Labeling the Terminals . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Removing the Finger-Safe Terminal Block . . . . . . . . . . . . . . . . Wiring the Finger-Safe Terminal Block . . . . . . . . . . .
Table of Contents iii Chapter 4 Module Data, Status, and Channel 1769-OF2 Output Module Memory Map . . . . . . . . . . . . . . . . . . . . . . 4-1 1769-OF2 Output Data File . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4-2 Configuration for the Output 1769-OF2 Input Data File . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4-2 Modules 1769-OF2 Diagnostic Bits (D0 and D1). . . . . . . . . . . . . . . . . . . . 4-2 1769-OF2 Hold Last State Bits (H0 and H1). . . . . . .
Table of Contents iv Chapter 5 Module Diagnostics and Troubleshooting Safety Considerations. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5-1 Indicator Lights . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5-1 Activating Devices When Troubleshooting . . . . . . . . . . . . . . . . . 5-1 Stand Clear of the Machine . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5-2 Program Alteration . . . . . . . . . . . . . . . . . . . . . . . . . .
Table of Contents v Appendix D Configuring Modules in a Remote DeviceNet System with a 1769-ADN DeviceNet Adapter Overview. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Add the DeviceNet Adapter to the Scanlist . . . . . . . . . . . . . . . . . . . Configure the 1769-IF4 Input Module Example . . . . . . . . . . . . . . . 1769-IF4 Example of External Power . . . . . . . . . . . . . . . . . . . . Configure the 1769-OF8C Output Module Example . . . . . . . . .
Table of Contents vi Publication 1769-UM002B-EN-P - July 2005
Preface Read this preface to familiarize yourself with the rest of the manual. This preface covers the following topics: • • • • • who should use this manual how to use this manual related publications conventions used in this manual Rockwell Automation support Who Should Use This Manual Use this manual if you are responsible for designing, installing, programming, or troubleshooting control systems that use Allen-Bradley Compact™ I/O.
2 Related Documentation The table below provides a listing of publications that contain important information about MicroLogix 1500 systems. For Read this document Document number A user manual containing information on how to install, MicroLogix™ 1500 User Manual use and program your MicroLogix 1500 controller. 1764-UM001 A user manual containing information on how to install, DeviceNet Adapter User Manual and use your 1769-ADN DeviceNet Adapter.
3 Rockwell Automation Support Rockwell Automation offers support services worldwide, with over 75 Sales/Support Offices, 512 authorized distributors and 260 authorized Systems Integrators located throughout the United States alone, plus Rockwell Automation representatives in every major country in the world.
4 Notes: Publication 1769-UM002B-EN-P - July 2005
Chapter 1 Overview This chapter explains how analog data is used, and describes the 1769-IF4 and -IF8 analog input modules and the 1769-OF2, -OF8C, and -OF8V analog output modules.
1-2 Overview General Description The 1769-IF4 and -IF8 analog input modules convert and digitally store analog data for retrieval by controllers, such as the CompactLogix™ or MicroLogix™ 1500. The module supports connections from any combination of up to four voltage or current analog sensors for the 1769-IF4 and up to eight for the 1769-IF8. The high-impedance input channels can be wired as either single-ended or differential inputs.
Overview 1-3 Hardware Features The modules contain removable terminal blocks. The 1769-IF4 and -IF8 channels can be wired as either single-ended or differential inputs. The 1769-OF2, -OF8C, and -OF8V channels are single-ended only. Module configuration is normally done via the controller’s programming software. In addition, some controllers support configuration via the user program. In either case, the module configuration is stored in the memory of the controller.
1-4 Overview Figure 1.3 1769-IF8 Analog Module’s Hardware Features 2a 1 3 WARNING -Do Not Remove RTB Unless Area is Non-Hazardous 10a IN 1 IN 3 IN 5 IN 7 10 10b IN 9 IN 11 IN 13 IN 15 DC COM IN 0 IN 2 IN 4 IN 6 DC COM IN 8 IN 10 IN 12 IN 14 IN 16 IN 17 IN 18 IN 19 IN 20 IN 21 IN 22 IN 23 IN 25 DC COM IN 27 IN 29 IN 31 DC COM IN 24 IN 26 IN 28 IN 30 4 1769-IQ32 8a 7a 7a 2b 5a 9 5b 6 7b 7b 8b 30538-M Table 1.
Overview 1-5 General Diagnostic Features The analog modules contain diagnostic features that can help you identify the source of problems that may occur during power-up or during normal channel operation. These power-up and channel diagnostics are explained in chapter 6, Module Diagnostics and Troubleshooting. The modules communicate to the controller through the bus interface. The modules also receive 5 and 24V dc power through the bus interface.
1-6 Overview System Operation At power-up, the module performs a check of its internal circuits, memory, and basic functions. During this time, the module status LED remains off. If no faults are found during power-up diagnostics, the module status LED is turned on. After power-up checks are complete, the module waits for valid channel configuration data. If an invalid configuration is detected, the module generates a configuration error.
Overview 1-7 Module Operation Input Module Block Diagram The input module’s input circuitry consists of four differential analog inputs multiplexed into a single analog-to-digital (A/D) converter. The A/D converter reads the selected input signal and converts it to a digital value which is presented to the controller. The multiplexer sequentially switches each input channel to the module’s A/D converter. Figure 1.
1-8 Overview Figure 1.
Overview 1-9 Output Module Block Diagram The output module uses a digital-to-analog (D/A) converter to read the digital output data from the controller and convert it to an analog output signal. Figure 1.
1-10 Overview Module Field Calibration The 1769-IF4 and -IF8 input modules performs autocalibration when a channel is initially enabled. In addition, if a channel is configured differently than the previously scanned channel, an autocalibration cycle is run as part of the reconfiguration process. The 1769-OF2, -OF8C, and -OF8V output modules’s calibration is guaranteed by its design. No field calibration is required.
Chapter 2 Installation and Wiring This chapter tells you how to: • • • • • • Compliance to European Union Directives determine the power requirements for the modules avoid electrostatic damage install the module wire the module’s terminal block wire input devices wire output devices This product is approved for installation within the European Union and EEA regions. It has been designed and tested to meet the following directives.
2-2 Installation and Wiring Power Requirements The modules receive power through the bus interface from the +5V dc/+24V dc system power supply. Some modules can also be supplied 24V dc power by an external power supply connected to the module’s terminal block. Table 2.
Installation and Wiring 2-3 Hazardous Location Considerations This equipment is suitable for use in Class I, Division 2, Groups A, B, C, D or non-hazardous locations only. The following WARNING statement applies to use in hazardous locations. ATTENTION EXPLOSION HAZARD • Substitution of components may impair suitability for Class I, Division 2. • Do not replace components or disconnect equipment unless power has been switched off or the area is known to be non-hazardous.
2-4 Installation and Wiring Remove Power ATTENTION Remove power before removing or inserting this module. When you remove or insert a module with power applied, an electrical arc may occur.
Installation and Wiring 2-5 work with a system that is already mounted, see Replacing a Single Module within a System on page 2-9. Figure 2.1 Assemble the Compact I/O System 3 4 2 1 6 1 5 1. Disconnect power. 2. Check that the bus lever of the module to be installed is in the unlocked (fully right) position. 3. Use the upper and lower tongue-and-groove slots (1) to secure the modules together (or to a controller). 4.
2-6 Installation and Wiring 6. To allow communication between the controller and module, move the bus lever fully to the left (4) until it clicks. Ensure it is locked firmly in place. ATTENTION When attaching I/O modules, it is very important that the bus connectors are securely locked together to ensure proper electrical connection. 7. Attach an end cap terminator (5) to the last module in the system by using the tongue-and-groove slots as before. 8. Lock the end cap bus terminator (6).
Installation and Wiring 2-7 Panel Mounting Mount the module to a panel using two screws per module. Use M4 or #8 panhead screws. Mounting screws are required on every module. Figure 2.3 Panel Mounting Using the Dimensional Template For more than 2 modules: (number of modules-1) X 35 mm (1,38 in.). Right End Cap Compact I/O Compact I/O Compact I/O 122.6±0.2 (4.826±0.008) Host Controller 132 (5.197) 28.5 (1.12) 35 (1.38) Refer to host controller documentation for this dimension.
2-8 Installation and Wiring Panel Mounting Procedure Using Modules as a Template The following procedure allows you to use the assembled modules as a template for drilling holes in the panel. If you have sophisticated panel mounting equipment, you can use the dimensional template provided on page 2-7. Due to module mounting hole tolerance, it is important to follow these procedures: 1. On a clean work surface, assemble no more than three modules. 2.
Installation and Wiring Replacing a Single Module within a System 2-9 The module can be replaced while the system is mounted to a panel (or DIN rail). Follow these steps in order: 1. Remove power. See important note on 2-4. 2. On the module to be removed, remove the upper and lower mounting screws from the module (or open the DIN latches using a flat-blade or phillips-style screwdriver). 3. Move the bus lever to the right to disconnect (unlock) the bus. 4.
2-10 Installation and Wiring External Power Switch The analog modules have an external 24V dc power switch which gives you the option of using an external power supply. The switch is located in on the lower left portion of the module’s circuit board, as shown below. With the switch pressed on the top (default), 24V dc power is drawn from the 1769 system power supply via the 1769 I/O bus. Pressed on the bottom, 24V dc power is drawn from the external power supply.
Installation and Wiring 2-11 System Wiring Guidelines Consider the following when wiring your system: General • All module commons (ANLG COM) are connected in the analog module. The analog common (ANLG COM) is not connected to earth ground inside the module. • Channels are not isolated from each other. • Do not use the analog module’s NC terminals as connection points. • To ensure optimum accuracy, limit overall cable impedance by keeping your cable as short as possible.
2-12 Installation and Wiring Effect of Transducer/Sensor and Cable Length Impedance on Voltage Input Accuracy For voltage inputs, the length of the cable used between the transducer/sensor and the 1769-IF4 or -IF8 module can affect the accuracy of the data provided by the module. Figure 2.
Installation and Wiring 2-13 Table 2.2 Effect of Cable Length on Input Accuracy Length of Cable (m) dc resistance of the cable, Rc (Ω) Accuracy impact at the input module 50 2.625 0.00238% 100 5.25 0.00477% 200 10.50 0.00954% 300 15.75 0.0143% As input source impedance (Rs) and/or resistance (dc) of the cable (Rc) get larger, system accuracy decreases.
2-14 Installation and Wiring For example, for Belden 8761 two conductor, shielded cable and a 1769-IF4 input module: Rc = 16 Ω/1000 ft Rs = 15 Ω Ri = 220 KΩ Vin % Ai = ⎛ 1 ∠ ---------⎞ × 100 ⎝ Vs ⎠ Table 2.3 Effect of Output Impedance and Cable Length on Accuracy Length of Cable (m) dc resistance of the cable Rc (Ω) Accuracy impact at the input module 50 2.625 0.00919% 100 5.25 0.01157% 200 10.50 0.01634% 300 15.75 0.
Installation and Wiring 2-15 Labeling the Terminals A removable, write-on label is provided with the module. Remove the label from the door, mark the identification of each terminal with permanent ink, and slide the label back into the door. Your markings (ID tag) will be visible when the module door is closed. Figure 2.
2-16 Installation and Wiring Wiring the Finger-Safe Terminal Block When wiring the terminal block, keep the finger-safe cover in place. 1. Loosen the terminal screws to be wired. 2. Begin wiring at the bottom of the terminal block and move up. 3. Route the wire under the terminal pressure plate. You can use the bare wire or a spade lug. The terminals accept a 6.35 mm (0.25 in.) spade lug. TIP The terminal screws are non-captive. Therefore, it is possible to use a ring lug [maximum 1/4 inch o.d. with a 0.
Installation and Wiring 2-17 Wiring the Modules ATTENTION To prevent shock hazard, care should be taken when wiring the module to analog signal sources. Before wiring any analog module, disconnect power from the system power supply and from any other source to the analog module. After the analog module is properly installed, follow the wiring procedure below. To ensure proper operation and high immunity to electrical noise, always use Belden™ 8761 (shielded, twisted-pair) or equivalent wire.
2-18 Installation and Wiring To wire your module follow these steps. 1. At each end of the cable, strip some casing to expose the individual wires. 2. Trim the signal wires to 2-inch lengths. Strip about 3/16 inch (5 mm) of insulation away to expose the end of the wire. ATTENTION Be careful when stripping wires. Wire fragments that fall into a module could cause damage at power up. 3. At one end of the cable, twist the drain wire and foil shield together.
Installation and Wiring 2-19 Analog Input Modules Wiring Figure 2.11 1769-IF4 Terminal Layout DANGER Do Not Remove RTB Under Power Unless Area is Non-Hazardous.
2-20 Installation and Wiring Figure 2.
Installation and Wiring 2-21 Figure 2.
2-22 Installation and Wiring Figure 2.
Installation and Wiring 2-23 Figure 2.17 1769-IF8 Wiring Single-Ended Sensor/Transmitter Types 1769-IF8 Terminal Block Sensor/Tran + smitter Supply(1) V in 0 + Current Transmitter + Signal V/I in 0 I in 0 + ANLG Com V in 1 + V/I in 1 - Voltage Transmitter + Ground I in 1 + ANLG Com Signal V in 2 + V/I in 2 I in 2 + ANLG Com Voltage Transmitter + Ground Signal V in 3 + V/I in 3 I in 3 + ANLG Com NC NC Wiring for channels 4-7 are identical.
2-24 Installation and Wiring Analog Output Modules Wiring Figure 2.19 1769-OF2 Terminal Layout DANGER Do Not Remove RTB Under Power Unless Area is Non-Hazardous. V in 0 ANLG Com 0 I out 0 + NC I out 1 + V out 0 + ANLG Com V out 1 + ANLG Com NC +24V dc dc Neutral I out 0 + NC I out 1 + NC dc NEUT ANLG Com 3 NC V in 0 + I in 0 V out 0 + ANLG Com V out 1 + ANLG Com +24V dc I in 3 NC Ensure Adjacent Bus Lever is Unlatched/Latched Before/After Removing/Inserting Module 1769-OF2 Figure 2.
Installation and Wiring 2-25 Figure 2.21 1769-OF8C Terminal Layout DANGER Do Not Remove RTB Under Power Unless Area is Non-Hazardous.
2-26 Installation and Wiring Figure 2.23 1769-OF8V Terminal Layout DANGER Do Not Remove RTB Under Power Unless Area is Non-Hazardous.
Chapter 3 Module Data, Status, and Channel Configuration for the Input Modules This chapter examines the analog input modules’ data table, channel status, and channel configuration word. The 1769-IF4 module information follows. For 1769-IF8 module information, see page 3-16. 1769-IF4 Input Module Addressing The 1769-IF4 memory map shows the input and configuration image tables for the 1769-IF4. Detailed information on the input image table can be found in 1769-IF4 Input Data File on page 3-2. Figure 3.
3-2 Module Data, Status, and Channel Configuration for the Input Modules 1769-IF4 Input Image The 1769-IF4 input image file represents data words and status bits. Input words 0 through 3 hold the input data that represents the value of the analog inputs for channels 0 through 3. These data words are valid only when the channel is enabled and there are no errors. Input words 4 and 5 hold the status bits. To receive valid status information, the channel must be enabled.
Module Data, Status, and Channel Configuration for the Input Modules 3-3 1769-IF4 Input Data Values Words 0 through 3 contain the converted analog input data from the field device. The most significant bit (MSB) is the sign bit. General Status Bits (S0 through S3) Word 4, bits 0 through 3 contain the general operational status bits for input channels 0 through 3. If set (1), these bits indicate an error associated with that channel.
3-4 Module Data, Status, and Channel Configuration for the Input Modules 1769-IF4 Configuration Data File The configuration file lets you determine how each individual input channel will operate. Parameters such as the input type and data format are set up using this file. This data file is writable and readable. The default value of the configuration data table is all zeros. The structure of the channel configuration file is shown below. Table 3.
Module Data, Status, and Channel Configuration for the Input Modules 3-5 Channel Configuration Each channel configuration word consists of bit fields, the settings of which determine how the channel operates. See the table below and the descriptions that follow for valid configuration settings and their meanings. The default bit status of the configuration file is all zeros. Table 3.
3-6 Module Data, Status, and Channel Configuration for the Input Modules Enable/Disable Channel This configuration selection lets each channel to be individually enabled. TIP When a channel is not enabled (0), no voltage or current input is provided to the controller by the A/D converter. Input Filter Selection The input filter selection field lets you select the filter frequency for each channel and provides system status of the input filter setting for analog input channels 0 through 3.
Module Data, Status, and Channel Configuration for the Input Modules 3-7 Channel Cut-Off Frequency The -3 dB frequency is the filter cut-off frequency. The cut-off frequency is defined as the point on the frequency response curve where frequency components of the input signal are passed with 3 dB of attenuation. All input frequency components at or below the cut-off frequency are passed by the digital filter with less than 3 dB of attenuation.
3-8 Module Data, Status, and Channel Configuration for the Input Modules Module Update Time and Scanning Process The module update time is defined as the time required for the module to sample and convert the input signals of all enabled input channels and provide the resulting data values to the processor. Module update time can be calculated by adding the sum of all enabled channel times. Channel times include channel scan time, channel switching time, and reconfiguration time.
Module Data, Status, and Channel Configuration for the Input Modules 3-9 Examples of Calculating Module Update Time EXAMPLE 1. Two Channels Enabled with Identical Configurations The following example calculates the 1769-IF4 module update time for two channels enabled with the same configuration and a 500 Hz filter. Module Update Time = [Ch 0 Update Time + Ch 0 Switching Time] + [Ch 1 Update Time + Ch 1 Switching Time] 28 = [4 ms + 10 ms] + [4 ms + 10 ms] EXAMPLE 2.
3-10 Module Data, Status, and Channel Configuration for the Input Modules Input Data Selection Formats This selection configures channels 0 through 3 to present analog data in any of the following formats: • • • • Raw/Proportional Data Engineering Units Scaled-for-PID Percent Range Raw/Proportional Data The value presented to the controller is proportional to the selected input and scaled into the maximum data range allowed by the bit resolution of the A/D converter and filter selected.
Module Data, Status, and Channel Configuration for the Input Modules 3-11 Valid Input Data Word Formats/Ranges The following table shows the valid formats and min./max. data ranges provided by the module. Table 3.7 Valid Input Data 1769-IF4 Input Range -10V to +10V dc 0V to 5V dc 0V to 10V dc 4 mA to 20 mA Input Value Example Data Input Range Condition Raw/Propor tional Data Engineering Unit Scaled-forPID Percent Full Range Decimal Range Decimal Range Decimal Range Decimal Range Over 10.
3-12 Module Data, Status, and Channel Configuration for the Input Modules Table 3.7 Valid Input Data 1769-IF4 Input Range 1.0V to 5V dc 0 mA to 20 mA Input Value Example Data Input Range Condition Raw/Propor tional Data Engineering Unit Scaled-forPID Percent Full Range Decimal Range Decimal Range Decimal Range Decimal Range Over 5.25V dc 5.5V dc Over-range 32767 (max.) 5250 17407 10625 +5.25V dc 5.25V dc Over-range 32767 (max.) 5250 17407 10625 1.0V to 5.0V dc 5.
Module Data, Status, and Channel Configuration for the Input Modules 3-13 Effective Resolution The effective resolution for an input channel depends upon the filter frequency selected for that channel. The following tables provide the effective resolution for the four frequencies for each of the range selections. Table 3.
3-14 Module Data, Status, and Channel Configuration for the Input Modules Table 3.9 250Hz Effective Resolution 1769-IF4 Input Range -10 to +10V dc 0 to +5V dc 0 to +10V dc +4 to +20 mA +1 to +5V dc 0 to +20 mA Raw/Proportional Data Over the Full Input Range Bits and Engineering Units Resolution Sign +11 5.13 mV/ 16 counts Sign +10 5.13 mV/ 32 counts Sign +11 5.13 mV/ 16 counts Sign +11 10.25 µA/ 16 counts Sign +10 5.13 mV/ 32 counts Sign +11 10.
Module Data, Status, and Channel Configuration for the Input Modules 3-15 Table 3.10 500 Hz Effective Resolution 1769-IF4 Input Range -10 to +10V dc 0 to +5V dc 0 to +10V dc +4 to +20 mA +1 to +5V dc 0 to +20 mA Raw/Proportional Data Over the Full Input Range Bits and Engineering Units Resolution Sign +9 20.51 mV/ 64 counts Sign +8 20.51 mV/ 128 counts Sign +9 20.51 mV/ 64 counts Sign +9 41.02 µA/ 64 counts Sign +8 20.51 mV/ 128 counts Sign +9 41.
3-16 Module Data, Status, and Channel Configuration for the Input Modules 1769-IF8 Input Module Addressing The1769-IF8 memory map shows the output, input, and configuration tables for the 1769-IF8. Figure 3.
Module Data, Status, and Channel Configuration for the Input Modules 3-17 1769-IF8 Input Image The 1769-IF8 input image file represents data words and status bits. Input words 0 through 7 hold the input data that represents the value of the analog inputs for channels 0 through 7. These data words are valid only when the channel is enabled and there are no errors. Input words 9 and 11 hold the status bits. To receive valid status information, the channel must be enabled.
3-18 Module Data, Status, and Channel Configuration for the Input Modules 1769-IF8 Input Data File The input data table lets you access analog input module read data for use in the control program, via word and bit access. The data table structure is shown in the table below. For each input module, slot x, words 0-7 in the input data file contain the analog values of the inputs. Table 3.
Module Data, Status, and Channel Configuration for the Input Modules 3-19 High Alarm Flag Bits (H0 through H7) Word 10, bits 2, 6, 10, 14 and Word 11, bits 2, 6, 10, 14 contain the high alarm flag bits for input channels 0 through 7 and applies to all input types. If set (1), the input signal is output the user-defined range. The module continues to convert analog data to maximum full-range values.
3-20 Module Data, Status, and Channel Configuration for the Input Modules 1769-IF8 Output Data File The output data table lets you access analog output module write data for use in the control program, via word and bit access. The data table structure is shown in the table below. Word Table 3.
Module Data, Status, and Channel Configuration for the Input Modules 3-21 Table 3.
3-22 Module Data, Status, and Channel Configuration for the Input Modules The configuration file can also be modified through the control program, if supported by the controller. The structure and bit settings are shown in Channel Configuration on page 3-22. Channel Configuration Each channel’s configuration words consist of bit fields, the settings of which determine how the channel operates. See the table below and the descriptions that follow for valid configuration settings and their meanings.
Module Data, Status, and Channel Configuration for the Input Modules 3-23 Enable/Disable Channel This configuration selection lets each channel to be individually enabled. TIP When a channel is not enabled (0), no voltage or current input is provided to the controller by the A/D converter. Input Filter Selection The input filter selection field lets you select the filter frequency for each channel and provides system status of the input filter setting for analog input channels 0 through 3.
3-24 Module Data, Status, and Channel Configuration for the Input Modules Channel Cut-Off Frequency The -3 dB frequency is the filter cut-off frequency. The cut-off frequency is defined as the point on the frequency response curve where frequency components of the input signal are passed with 3 dB of attenuation. All input frequency components at or below the cut-off frequency are passed by the digital filter with less than 3 dB of attenuation.
Module Data, Status, and Channel Configuration for the Input Modules 3-25 Figure 3.
3-26 Module Data, Status, and Channel Configuration for the Input Modules If you use real-time sampling, the user-configured sample rate is used as the module update time. Table 3.
Module Data, Status, and Channel Configuration for the Input Modules EXAMPLE 3-27 2. Two Channels Enabled with Different Filter Settings, But are a Channel Pair The following example calculates the 1769-IF8 module update time for two channels enabled with any configuration, with different filter settings, but are a channel pair.
3-28 Module Data, Status, and Channel Configuration for the Input Modules Engineering Units The module scales the analog input data to the actual current or voltage values for the selected input range. The resolution of the engineering units is dependent on the range selected and the filter selected. See Table 3.17 Valid Input Data on page 3-28. Scaled-for-PID The value presented to the controller is a signed integer with zero representing the lower user range and 16383 representing the upper user range.
Module Data, Status, and Channel Configuration for the Input Modules 3-29 1769-IF8 Real Time Sampling This parameter instructs the module how often to scan its input channels and obtain all available data. After the channels are scanned, the module places the data into the Input Data file. This feature is applied on a module-wide basis. During module configuration, you specify a Real Time Sampling (RTS) period by entering a value into Word 0 of the Configuration Data file.
3-30 Module Data, Status, and Channel Configuration for the Input Modules 1769-IF8 Process Alarms Process alarms alert you when the module has exceeded configured high or low limits for each channel. You can latch process alarms. These are set at two user configurable alarm trigger points: • Process Alarm High • Process Alarm Low Each input channel’s process alarms are controlled by bits in the Configuration Data file. Enable alarms for a channel by setting (1) the EA bit for that channel.
Module Data, Status, and Channel Configuration for the Input Modules 3-31 Alarm Deadband You may configure an Alarm Deadband to work with the process alarms. The deadband lets the process alarm status bit to remain set, despite the alarm condition disappearing, as long as the input data remains within the deadband of the process alarm. Figure 3.6 shows input data that sets each of the two alarms at some point during module operation.
3-32 Module Data, Status, and Channel Configuration for the Input Modules Notes: Publication 1769-UM002B-EN-P - July 2005
Chapter 4 Module Data, Status, and Channel Configuration for the Output Modules This chapter examines the analog output module’s output data file, input data file, channel status, and channel configuration words. 1769-OF2 Output Module Memory Map The 1769-OF2 memory map shows the output, input, and configuration tables for the 1769-OF2. Figure 4.
4-2 Module Data, Status, and Channel Configuration for the Output Modules 1769-OF2 Output Data File The structure of the output data file is shown in the table below. Words 0 and 1 contain the converted analog output data for channels 0 and 1, respectively. The most significant bit is the sign bit. Table 4.
Module Data, Status, and Channel Configuration for the Output Modules 4-3 1769-OF2 Over-Range Flag Bits (O0 and O1) Over-range bits for channels 0 and 1 are contained in word 1, bits 14 and 12. When set, the over-range bit indicates that the controller is attempting to drive the analog output above its normal operating range. However, the module continues to convert analog output data to a maximum full range value.
4-4 Module Data, Status, and Channel Configuration for the Output Modules 1769-OF2 Output Data Loopback/Echo Words 2 and 3 provide output loopback/data echo through the input array for channels 0 and 1, respectively. The value of the data echo is the analog value currently being converted on-board the module by the D/A converter. This ensures that the logic-directed state of the output is true. Otherwise, the state of the output could vary depending on controller mode.
Module Data, Status, and Channel Configuration for the Output Modules 4-5 The configuration file lets you determine how each individual output channel will operate. Parameters such as the output type/range and data format are set up using this file. The configuration data file is writable and readable. The default value for the configuration data file is all zeros. The structure of the channel configuration file is explained below. Words 0 and 1 are the channel configuration words for channels 0 and 1.
4-6 Module Data, Status, and Channel Configuration for the Output Modules 1769-OF2 Channel Configuration Both channel configuration words (0 and 1) consist of bit fields, the settings of which determine how the corresponding channel operates. See the table below and the descriptions that follow for valid configuration settings and their meanings. Table 4.
Module Data, Status, and Channel Configuration for the Output Modules 4-7 1769-OF2 Enable/Disable Channel This configuration selection (bit 15) lets each channel to be individually enabled. TIP A channel that is not enabled has zero voltage or current at its terminal.
4-8 Module Data, Status, and Channel Configuration for the Output Modules 1769-OF2 Percent Full Range The control program presents the analog output data to the module as a percent of the full analog output range (for example, valve 50% open). The module scales this data to the appropriate analog output value for the selected user range. For example, 0 to 100% equals 0 to 10V dc. See Table 4.5 1769-OF2 Valid Output Data Table on page 4-12. TIP The ±10V dc range does not support percent full range.
Module Data, Status, and Channel Configuration for the Output Modules 4-9 If this selection is enabled [the bit is set (1)] and the system enters the fault mode, it commands the module to convert the user-specified integer value from the channel’s fault value word (2 or 4) to the appropriate analog output for the range selected. If the default value, 0000, is entered, the output typically converts to the minimum value for the range selected.
4-10 Module Data, Status, and Channel Configuration for the Output Modules If this selection is enabled [the bit is set (1)] and the system enters the program mode, it commands the module to convert the user-specified value from the channel’s program/idle value word (3 or 5) to the appropriate analog output for the range selected. EXAMPLE • If the default value, 0000, is used and the range selected is 0 to 20 mA, the module will output 0 mA for all data formats.
Module Data, Status, and Channel Configuration for the Output Modules 4-11 1769-OF2 Fault Value (Channel 0 and 1) Using words 2 and 4 for channels 0 and 1, you can specify the values the outputs will assume when the system enters the fault mode. The default value is 0. Valid values are dependent upon the range selected in the range selection field. If the value you entered is outside the normal operating range for the output range selected, the module generates a configuration error.
4-12 Module Data, Status, and Channel Configuration for the Output Modules 1769-OF2 Valid Output Data Word Formats/Ranges The following table shows the valid formats and data ranges accepted by the module. OF2 Output Range Input Value Controller Ordered OF2 Output Controller Ordered OF2 Output and Echo Controller Ordered OF2 Output and Echo Controller Ordered OF2 Output and Echo Controller Ordered OF2 Output and Echo Table 4.5 1769-OF2 Valid Output Data Table ±10V dc Over 10.5V dc +11.
Module Data, Status, and Channel Configuration for the Output Modules 4-13 OF2 Output Range Input Value Controller Ordered OF2 Output Controller Ordered OF2 Output and Echo Controller Ordered OF2 Output and Echo Controller Ordered OF2 Output and Echo Controller Ordered OF2 Output and Echo Table 4.5 1769-OF2 Valid Output Data Table 0V to 10V dc Over 10.5V dc 11.0V dc +10.5V dc Over N/A N/A 11000 10500 18021 17202 11000 10500 +10.5V dc +10.5V dc +10.
4-14 Module Data, Status, and Channel Configuration for the Output Modules OF2 Output Range Input Value Controller Ordered OF2 Output Controller Ordered OF2 Output and Echo Controller Ordered OF2 Output and Echo Controller Ordered OF2 Output and Echo Controller Ordered OF2 Output and Echo Table 4.5 1769-OF2 Valid Output Data Table 0 mA to 20 mA Over 21.0 mA +22.0 mA +21.0 mA Over N/A N/A 22000 21000 18201 17202 11000 10500 21.0 mA 21.0 mA +21.
Module Data, Status, and Channel Configuration for the Output Modules 4-15 The resolution of an analog output channel depends on the output type/range and data format selected. Table 4.6 provides detailed resolution information for the 1769-OF2. 1769-OF2 Module Resolution Table 4.
4-16 Module Data, Status, and Channel Configuration for the Output Modules 1769-OF8C Output Module Memory Map The 1769-OF8C memory map shows the output, input, and configuration tables for the 1769-OF8C. Figure 4.
Module Data, Status, and Channel Configuration for the Output Modules 1769-OF8V Output Module Memory Map 4-17 The 1769-OF8V memory map shows the output, input, and configuration tables for the 1769-OF8V. Figure 4.
4-18 Module Data, Status, and Channel Configuration for the Output Modules The structure of the output data file is shown in the table below. Words 0 through 7 contain the commanded analog output data for channels 0 through 7, respectively. The most significant bit is the sign bit. Word 8 contains the control bits for unlatching alarms. 1769-OF8C and -OF8V Output Data File Table 4.
Module Data, Status, and Channel Configuration for the Output Modules This data table file provides immediate access to channel diagnostic information and analog output data at the module for use in the control program. To receive valid data, you must enable the channel. The data table structure is described below. Table 4.
4-20 Module Data, Status, and Channel Configuration for the Output Modules 1769-OF8C and -OF8V Over-Range Flag Bits (O0 through O7) Word 1, bits 0, 4, 8, and 12, and Word 2, bits 0, 4, 8, and 12 contain the over-range bits for channels 0 through 7. When set, the over-range bit indicates that the controller is attempting to drive the analog output above its normal operating range or above the channel’s High Clamp level (if clamp limits are set for the channel).
Module Data, Status, and Channel Configuration for the Output Modules 4-21 1769-OF8C and -OF8V Output Held Bits (H0 through H7) Word 1, bits 2, 6, 10, and 14, and Word 2, bits 2, 6, 10, and 14 contain the output held bits for input channels 0 through 7. When one of these bits is set (1), the corresponding channel is in the hold state. Output data will not change until value commanded by the controller matches the value being held by the module for any held output channel.
4-22 Module Data, Status, and Channel Configuration for the Output Modules The configuration file lets you determine how each individual output channel will operate. Parameters such as the output type/range and data format are set up using this file. The configuration data file is writable and readable. The default value for the configuration data file is all zeros. The structure of the channel configuration file is explained below.
Module Data, Status, and Channel Configuration for the Output Modules 4-23 Word Description Word Description 48 Channel 6 Configuration Word 0 56 Channel 7 Configuration Word 0 49 Channel 6 Configuration Word 1 57 Channel 7 Configuration Word 1 50 Channel 6 Fault Value Word 58 Channel 7 Fault Value Word 51 Channel 6 Program Idle Mode Word 59 Channel 7 Program Idle Mode Word 52 Channel 6 Low Clamp 60 Channel 7 Low Clamp 53 Channel 6 High Clamp 61 Channel 7 High Clamp 54 Channel
4-24 Module Data, Status, and Channel Configuration for the Output Modules 1769-OF8C and -OF8V Channel Configuration The first two words of each eight word group in the configuration file allow you to change the parameters of each channel independently. For example, words 8 and 9 correspond to channel 1 while words 56 and 57 correspond to channel 7. Table 4.
Module Data, Status, and Channel Configuration for the Output Modules 4-25 Table 4.
4-26 Module Data, Status, and Channel Configuration for the Output Modules For example, an application may set the high clamp on a 1769-OF8C module for 15 mA and the low clamp for 5 mA. If a controller sends a value corresponding to 16 mA to the module, the module will only apply 15 mA to its screw terminals. Clamping is disabled on a per channel basis by entering a 0 value for both the high and low clamps in the Configuration Data file.
Module Data, Status, and Channel Configuration for the Output Modules 4-27 Table 4.15 1769-OF8C Output Range/Types and Output Data Formats Output Data Format Output Range/Type Total Counts in Full Scale Number of Counts for Every 1% of Ramp Rate Real Units/Second for Every 1% of Ramp Rate 65534 655 0.2 mA/s Proportional Counts 0…20 mA 4…20 mA 0.16 mA/s Engineering Units 0…20 mA 21000 210 0.2 mA/s 4…20 mA 17800 178 0.16 mA/s 16383 164 0.2 mA/s Scaled for PID 0…20 mA 4…20 mA 0.
4-28 Module Data, Status, and Channel Configuration for the Output Modules Table 4.16 1769-OF8V Output Range/Types and Output Data Formats Output Data Format Output Range/Type Total Counts in Full Scale Number of Counts for Every 1% of Ramp Rate Real Units/Second for Every 1% of Ramp Rate 100 0.2V/s Percent of Full Scale -10…+10V 10000 0…5V 0.05V/s 0…10V 0.1V/s 1…5V 0.04V/s Ramping only takes place, if configured, when the output is being commanded to go to a fault state.
Module Data, Status, and Channel Configuration for the Output Modules 4-29 Open Wire Detection (1769-OF8C Only) This feature detects when current flow is not present on an output channel that is enabled and has a non-zero output value commanded. When an open wire condition occurs channel, the diagnostic bit (D bit in Input Data file status words) is set for that channel. 1769-OF8C and -OF8V Fault Mode (FM) This configuration selection provides individual fault mode selection for the analog channels.
4-30 Module Data, Status, and Channel Configuration for the Output Modules 1769-OF8C and -OF8V Program/Idle Mode (PM) This configuration selection provides individual program/idle mode selection for the analog channels 0. When this selection is disabled [the bit is reset (0)], the module holds the last state, meaning that the analog output remains at the last converted value prior to the condition that caused the control system to enter the program mode.
Module Data, Status, and Channel Configuration for the Output Modules 4-31 1769-OF8C and -OF8V Program/Idle to Fault Enable (PFE) If a system currently in program/idle mode faults, this setting determines whether the program/idle or fault value is applied to the output. If the selection is enabled [the bit is set (1)], the module applies the fault value. If the selection is disabled [the bit is reset (0)], the module applies the program/idle mode data value. The default setting is disabled.
4-32 Module Data, Status, and Channel Configuration for the Output Modules 1769-OF8C and -OF8V Program/Idle Value Use each channel’s Program/Idle Mode word to set the integer values for the outputs to assume when the system enters the program mode. The values are dependent upon the range selected in the range selection field. If the value you entered is outside the normal operating range for the output range selected, the module generates a configuration error. The default value is 0.
Module Data, Status, and Channel Configuration for the Output Modules 4-33 1769-OF8C Valid Output Data Word Formats/Ranges The following table shows the valid formats and data ranges accepted by the module. OF8C Output and Echo Controller Ordered OF8C Output and Echo Controller Ordered OF8C Output and Echo Controller Ordered OF8C Output and Echo Example Data 4 mA to 20 mA Over 21.0 mA +22.0 mA +21.0 mA Over N/A N/A 22000 21000 18431 17407 11250 10625 21.0 mA +21.0 mA +21.
4-34 Module Data, Status, and Channel Configuration for the Output Modules 1769-OF8V Valid Output Data Word Formats/Ranges The following table shows the valid formats and data ranges accepted by the module. OF8V Normal Operating Output Range Input Value Controller Ordered OF8C Output Controller Ordered OF8C Output and Echo Controller Ordered OF8C Output and Echo Controller Ordered OF8C Output and Echo Controller Ordered OF8C Output and Echo Table 4.
Module Data, Status, and Channel Configuration for the Output Modules 4-35 OF8C Output and Echo Controller Ordered OF8C Output and Echo Controller Ordered OF8C Output and Echo Controller Ordered OF8C Output and Echo Example Data 0V to 10V dc Over 10.5V dc 11.0V dc +10.5V dc Over N/A N/A 11000 10500 18021 17202 11000 10500 +10.5V dc +10.5V dc +10.5V dc Over 32767 32767 10500 10500 17202 17202 10500 10500 0.0V dc to 10.0V dc +10.0V dc +10.
4-36 Module Data, Status, and Channel Configuration for the Output Modules Notes: Publication 1769-UM002B-EN-P - July 2005
Chapter 5 Module Diagnostics and Troubleshooting This chapter describes troubleshooting the analog input and output modules. This chapter contains information on: • • • • • Safety Considerations safety considerations when troubleshooting module vs. channel operation the module’s diagnostic features critical vs. non-critical errors module condition data Safety considerations are an important element of proper troubleshooting procedures.
5-2 Module Diagnostics and Troubleshooting Stand Clear of the Machine When troubleshooting any system problem, have all personnel remain clear of the machine. The problem could be intermittent, and sudden unexpected machine motion could occur. Have someone ready to operate an emergency stop switch in case it becomes necessary to shut off power to the machine.
Module Diagnostics and Troubleshooting Power-up Diagnostics 5-3 At module power-up, a series of internal diagnostic tests are performed. These diagnostic tests must be successfully completed or the module status LED remains off and a module error results and is reported to the controller. Table 5.1 Diagnostics If module status Indicated LED is: condition: (1) Channel Diagnostics Corrective action: On Proper Operation No action required. Off Module Fault Cycle power.
5-4 Module Diagnostics and Troubleshooting Output Wire Broken/High Load Resistance (Output Modules Only) A check is performed on all enabled channels to determine if an output wire is broken, or if the load resistance is high, in the case of current mode outputs. Whenever one of these conditions is present, the diagnostic bit for that channel is set in the Input Data file. Non-critical module errors are typically recoverable. Channel errors (over-range or under-range errors) are non-critical.
Module Diagnostics and Troubleshooting 5-5 Module Error Field The purpose of the module error field is to classify module errors into three distinct groups, as described in the table below. The type of error determines what kind of information exists in the extended error information field. These types of module errors are typically reported in the controller’s I/O status file. Refer to your controller manual for details. Table 5.
5-6 Module Diagnostics and Troubleshooting Configuration Errors If you set the fields in the configuration file to invalid or unsupported values, the module ignores the invalid configuration, generates a non-critical error, and keeps operating with the previous configuration. Each type of analog module has different features and different error codes. See Table 5.4 1769-IF4 and -OF2 Extended Error Codes on page 5-6, Table 5.5 1769-IF8 Extended Error Codes on page 5-7, and Table 5.
Module Diagnostics and Troubleshooting 5-7 Table 5.
5-8 Module Diagnostics and Troubleshooting Table 5.
Module Diagnostics and Troubleshooting 5-9 Table 5.
5-10 Module Diagnostics and Troubleshooting Table 5.
Module Diagnostics and Troubleshooting 5-11 Table 5.
5-12 Module Diagnostics and Troubleshooting Table 5.
Appendix A Specifications General Specifications for 1769-IF4, -IF8, -OF2, -OF8C, and -OF8V Modules Table A.1 General Specifications Specification Value Dimensions 118 mm (height) x 87 mm (depth) x 35 mm (width) [52.5 mm (width) for 1769-IF8] Height including mounting tabs is 138 mm 4.65 in (height) x 3.43 in (depth) x 1.38 in (width) [2.07 in (width) for 1769-IF8] Height including mounting tabs is 5.43 in Approximate Shipping Weight (with carton) 300g (0.65 lbs.) 1769-IF8 - 450g (0.99 lbs.
A-2 Specifications Publication 1769-UM002B-EN-P - July 2005 Specification Value Electrical /EMC: The module has passed testing at the following levels: • ESD Immunity (IEC1000-4-2) • 4 kV contact, 8 kV air, 4 kV indirect • Radiated Immunity (IEC1000-4-3) • 10 V/m , 80 to 1000 MHz, 80% amplitude modulation, +900 MHz keyed carrier • Fast Transient Burst (IEC1000-4-4) • 2 kV, 5kHz • Surge Immunity (IEC1000-4-5) • 1kV galvanic gun • Conducted Immunity (IEC1000-4-6) • 10V, 0.
Specifications 1769-IF4 Input Specifications A-3 Table A.2 1769-IF4 Specifications Specification 1769-IF4 (Series B and later) Analog Normal Operating Ranges Voltage: ± 10V dc, 0 to 10V dc, 0 to 5V dc, 1 to 5V dc Current: 0 to 20 mA, 4 to 20 mA Full Scale(1) Analog Ranges Voltage: ± 10.5V dc, -0.5 to 10.5V dc, -0.5 to 5.25V dc, 0.5 to 5.25V dc Current: 0 to 21 mA, 3.2 to 21 mA Number of Inputs 4 differential or single-ended Bus Current Draw (max.
A-4 Specifications Specification 1769-IF4 (Series B and later) Input Channel Configuration via configuration software screen or the user program (by writing a unique bit pattern into the module’s configuration file). Refer to your controller manual to determine if user program configuration is supported. Module OK LED On: module has power, has passed internal diagnostics, and is communicating over the bus. Off: Any of the above is not true.
Specifications 1769-IF8 Input Specifications A-5 Table A.3 1769-IF8 Specifications Specification 1769-IF8 Analog Normal Operating Voltage: ± 10V dc, 0 to 10V dc, 0 to 5V dc, 1 to 5V dc Current: 0 to 20 mA, 4 to 20 mA Ranges(1) Full Scale Analog Ranges(1) Voltage: ± 10.5V dc, 0 to 10.5V dc, 0 to 5.25V dc, 0.5 to 5.25V dc Current: 0 to 21 mA, 3.2 to 21 mA Number of Inputs 8 differential or single-ended Bus Current Draw (max.) 120 mA at 5V dc 70 mA at 24V dc Heat Dissipation 3.
A-6 Specifications Specification 1769-IF8 Accuracy Drift with Temperature Voltage Terminal: ±0.003% per °C Current Terminal: ±0.0045% per °C Calibration The module performs autocalibration on channel enable and on a configuration change between channels. Non-linearity (in percent full scale) ±0.03% Repeatability(1) ±0.03% Module Error over Full Temperature Range (0 to +60°C [+32°F to +140°F]) Voltage: ±0.3% Current: ±0.
Specifications 1769-OF2 Output Specifications A-7 Table A.4 1769-OF2 Specifications Specification 1769-OF2 (Series B and later) Analog Ranges(1) Voltage: ±10V dc, 0 to 10V dc, 0 to 5V dc, 1 to 5V dc Current: 0 to 20 mA, 4 to 20 mA Full Scale Analog Ranges Voltage: ±10.5V dc, -0.5 to 10.5V dc, -0.5 to 5.25V dc, 0.5 to 5.25V dc Current: 0 - 21 mA, 3.2 - 21 mA Number of Outputs 2 single-ended Bus Current Draw (max.) 120 mA at 5V dc 120 mA at 24V dc(7) Heat Dissipation 2.
A-8 Specifications Specification 1769-OF2 (Series B and later) Output Error Over Full Temperature Range (0 to 60°C [32 to +140°F]) Voltage: ±0.8% Output Offset Error (0 to 60°C [32 to +140°F]) ±0.05% Output Impedance 15 Ω (typical) Open and Short-Circuit Protection Yes Maximum Short-Circuit Current 21 mA Output Overvoltage Protection Yes Time to Detect Open Wire Condition (Current Mode) 10 ms typical 13.5 ms maximum Output Response at Power Up and Power Down ±0.
Specifications 1769-OF8C Output Specifications A-9 Table A.5 1769-OF8C Specifications Specification 1769-OF8C Analog Normal Operating Ranges(1) 0 to 20 mA, 4 to 20 mA Full Scale Analog Ranges(1) 0 to 21 mA, 3.2 to 21 mA Number of Outputs 8 single-ended Bus Current Draw (max.) 145 mA at 5V dc 160 mA at 24V dc(2) Heat Dissipation 2.69 Total Watts (All points - 21 mA into 250Ω - worst case calculated.) Digital Resolution Across Full Range 16 bits (unipolar) +4 to +20 mA: 15.59 bits, 0.
A-10 Specifications Specification 1769-OF8C Accuracy Drift with Temperature ±0.0058% FS per °C Output Ripple(1) range 0 to 50 kHz (referred to output range) ±0.05% Non-linearity (in percent full scale) ±0.05% Repeatability(2) (in percent full scale) ±0.05% Output Error Over Full Temperature Range (0 to 60°C [+32 to +140°F]) Current: ±0.55% Output Offset Error (0 to 60°C [+32 to +140°F]) ±0.
Specifications 1769-OF8V Output Specifications A-11 Table A.6 1769-OF8V Specifications Specification 1769-OF8V Analog Normal Operating Ranges(1) ± 10V dc, 0 to 10V dc, 0 to 5V dc, 1 to 5V dc Full Scale Analog Ranges(1) ± 10.5V dc, -0.5 to 10.5V dc, -0.5 to 5.25V dc, 0.5 to 5.25V dc Number of Outputs 8 single-ended Bus Current Draw (max.) 145 mA at 5V dc 125 mA at 24V dc(2) Heat Dissipation 2.16 Total Watts (All points - 10.5V into 1 kΩ - worst case calculated.
A-12 Specifications Specification 1769-OF8V Accuracy Drift with Temperature ±0.0086% FS per °C Output Ripple(1) range 0 to 50 kHz (referred to output range) ±0.05% Non-linearity (in percent full scale) ±0.05% Repeatability(2) (in percent full scale) ±0.05% Output Error Over Full Temperature Range (0 to 60°C [+32 to +140°F]) ±0.8% Output Offset Error (0 to 60°C [+32 to +140°F]) ±0.
Appendix B Module Addressing and Configuration with MicroLogix 1500 This chapter examines the analog modules’ addressing scheme and describes module configuration using RSLogix 500 and MicroLogix 1500. Input Module Addressing In the following example, the 1769-IF4 is used. Detailed information on the input image table can be found in 1769-IF4 Input Data File on page 3-2. Figure B.
B-2 Module Addressing and Configuration with MicroLogix 1500 Input Modules Input Image The input modules’ input image file represents data words and status bits. Input words 0 through 3 hold the input data that represents the value of the analog inputs for channels 0 through 3. These data words are valid only when the channel is enabled and there are no errors. Input words 4 and 5 hold the status bits. To receive valid status information, the channel must be enabled.
Module Addressing and Configuration with MicroLogix 1500 B-3 Input Modules’ Configuration File The configuration file contains information that you use to define the way a specific channel functions. The configuration file is explained in more detail in chapter 4. The configuration file is modified using the programming software configuration screen. For an example of module configuration using RSLogix 500, see Configuring Analog I/O Modules in a MicroLogix 1500 System on page B-4.
B-4 Module Addressing and Configuration with MicroLogix 1500 Configuring Analog I/O Modules in a MicroLogix 1500 System This example takes you through configuring your 1769 analog input and output modules with RSLogix 500 programming software. This application example assumes your input and output modules are installed as expansion I/O in a MicroLogix 1500 system, and that RSLinx™ is properly configured and a communications link has been established between the MicroLogix processor and RSLogix 500.
Module Addressing and Configuration with MicroLogix 1500 B-5 A communications dialog appears, identifying the current communications configuration so that you can verify the target controller. If the communication settings are correct, click on Read IO Config. The actual I/O configuration is displayed. In this example, a second tier of I/O is attached to the MicroLogix 1500 processor.
B-6 Module Addressing and Configuration with MicroLogix 1500 Configuring the Input Modules For this example, the 1769-IF4 analog input module is installed in slot 1. To configure the module, double-click on the module/slot. Analog Input Configuration Each of the four analog input words (channels) are enabled by default. To enable a channel, click its Enable box so that a check mark appears in it. For optimum module performance, disable any channel that is not hardwired to a real input.
Module Addressing and Configuration with MicroLogix 1500 B-7 Configuring the Output Modules For this example, the 1769-OF2 analog output module is installed in slot 2. To configure the 1769-OF2, double-click on the module/slot. The following general configuration screen appears for the 1769-OF2, -OF8C, and -OF8V output modules.
B-8 Module Addressing and Configuration with MicroLogix 1500 Analog Output Configuration Both of the output words (channels) are enabled by default. To enable a channel, click its Enable box so that a check mark appears in it. For optimum module performance, disable any channel that is not hardwired to a real input. Then, choose your Filter Frequency, Input Range, and Data Format for each channel.
Module Addressing and Configuration with MicroLogix 1500 B-9 Publication 1769-UM002B-EN-P - July 2005
B-10 Module Addressing and Configuration with MicroLogix 1500 Notes: Publication 1769-UM002B-EN-P - July 2005
Appendix C Configuration Using the RSLogix 5000 Generic Profile for CompactLogix Controllers To configure a 1769 analog I/O module for a CompactLogix Controller in RSLogix 5000 using the Generic Profile, you must first begin a new project in RSLogix 5000. Click on the new project icon or on the FILE pull down menu and select NEW.
C-2 Configuration Using the RSLogix 5000 Generic Profile for CompactLogix Controllers Choose your controller type and enter a name for your project, then click OK. The following main RSLogix 5000 screen appears: The last entry in the controller organizer on the left of the screen shown above is a line labeled “[0] CompactBus Local”.
Configuration Using the RSLogix 5000 Generic Profile for CompactLogix Controllers C-3 This screen narrows your search for I/O modules to configure into your system. Click the OK button and the following default Generic Profile screen appears: This is the default Generic Profile screen. The first area to fill in for the Generic Profile screen is the name. This helps to easily identify the module type configured on your local Compact Bus.
C-4 Configuration Using the RSLogix 5000 Generic Profile for CompactLogix Controllers Use the following table for the “Comm Format”, “Assembly Instance” and “Size” values for the 1769-IF8, -OF8C, and -OF8V modules if you have an earlier version of RSLogix5000, version 15.
Configuration Using the RSLogix 5000 Generic Profile for CompactLogix Controllers C-5 At this point, you may click “Finish” to complete the configuration of your I/O module. If you click “Next”, the following screen appears: You may choose to inhibit the module or have the controller fault if the connection to this I/O module fails. The defaults for these two parameters are not to inhibit the module and not to fault the controller should an I/O module connection fail.
C-6 Configuration Using the RSLogix 5000 Generic Profile for CompactLogix Controllers Configuring I/O Modules Once you have created Generic Profiles for each analog I/O module in your system, you must then enter configuration information into the Tag database that has been automatically created from the Generic Profile information you entered for each of these modules. This configuration information is downloaded to each module at program download, going to run, and at power up.
Configuration Using the RSLogix 5000 Generic Profile for CompactLogix Controllers C-7 Tag addresses are automatically created for configured I/O modules. All local I/O addresses are preceded by the word Local. These addresses have the following format: • Input Data: Local:s.I • Output Data: Local:s.O • Configuration Data: Local:s.C where s is the slot number assigned the I/O modules in the Generic Profiles.
C-8 Configuration Using the RSLogix 5000 Generic Profile for CompactLogix Controllers Notes: Publication 1769-UM002B-EN-P - July 2005
Appendix D Configuring Modules in a Remote DeviceNet System with a 1769-ADN DeviceNet Adapter Overview In this example, the 1769-IF4 and 1769-OF8C modules are in a remote DeviceNet system controlled by a 1769-ADN DeviceNet adapter. RSNetWorx for DeviceNet software, version 2.23 or later, is used to configure the network and the I/O modules. The configuration method described here must be done prior to configuring the DeviceNet adapter in the DeviceNet scanner’s scanlist.
D-2 Configuring Modules in a Remote DeviceNet System with a 1769-ADN DeviceNet Adapter Add the DeviceNet Adapter to the Scanlist In this part of the example, the 1769-ADN adapter is added to the DeviceNet scanner’s scanlist. 1. Start the RSNetWorx for DeviceNet software. 2. In the left column under Category, click the + sign next to Communication Adapters. 3. In the list of products, double-click the 1769-ADN to place it on the network.
Configuring Modules in a Remote DeviceNet System with a 1769-ADN DeviceNet Adapter D-3 4. To configure I/O for the adapter, double-click the adapter icon that appears on the network. 5. Click the Module Configuration tab. TIP The I/O Summary tab provides the configured sized and format of the I/O data. The Transaction tab lets you send services supported by the device. The Clear/Reset Memory transaction returns the module’s configuration to the factory defaults, that is, empty.
D-4 Configuring Modules in a Remote DeviceNet System with a 1769-ADN DeviceNet Adapter Configure the 1769-IF4 Input Module Example The 1769-ADN adapter appears in slot 0. Your I/O modules, power supplies, end caps, and interconnect cables must be entered in the proper order, following the 1769 I/O rules contained in the DeviceNet Adapter User Manual, publication 1769-UM001A. To simplify this example, we placed the 1769-IF4 in slot 1 to show how it is configured. 1.
Configuring Modules in a Remote DeviceNet System with a 1769-ADN DeviceNet Adapter D-5 4. Double-click this slot 1 box. By default, the 1769-IF4 module contains six input words and no output words. 5. Click the Data Description button to see what the six input words represent. The first four words are the actual analog input data, while the last two words contain status and over- and under-range bits for the four channels. 6. Click OK or Cancel to exit this screen and return to the Configuration screen.
D-6 Configuring Modules in a Remote DeviceNet System with a 1769-ADN DeviceNet Adapter If you are using external 24V dc power for your 1769-IF4 module, you must click the white box to the left of “Using External +24v Power Source”, so that a check mark appears in the box. Do not click on the box if you are not using external 24V dc power. Each of the four analog input channels are disabled by default. To enable a channel, click its Enable box, so that a check mark appears in it.
Configuring Modules in a Remote DeviceNet System with a 1769-ADN DeviceNet Adapter Configure the 1769-OF8C Output Module Example D-7 After leaving the 1769-IF4 configuration screen, the I/O Bank 1 screen for the 1769-ADN adapter should look like the following: 1. Just as you did for the 1769-IF4 module, click on the drop-down arrow next to the empty slot and this time choose the 1769-OF8C. 2. Click on the Slot 2 button that appears to the right of the 1769-OF8C module.
D-8 Configuring Modules in a Remote DeviceNet System with a 1769-ADN DeviceNet Adapter 3. Click on the Configuration Settings button to see what the eleven input and nine output words represent. The eleven input words contain channel diagnostic data for the eight channels. The nine output words contain the actual analog output data for the eight channels along with one additional word containing the control bits for unlatching alarms. 4.
Configuring Modules in a Remote DeviceNet System with a 1769-ADN DeviceNet Adapter D-9 1769-OF8C Example of Output Channels Each of the two analog output channels are disabled by default. To enabled a channel, click its Enable box so that a check mark appears in it. Then, choose your Output Range, Data Format, and the state or your outputs should the controlling processor be placed into the program mode, fault, or lose communications.
D-10 Configuring Modules in a Remote DeviceNet System with a 1769-ADN DeviceNet Adapter Therefore, a value of 6241 (decimal) must be used in the event the controlling processor is placed into program mode, faults, or loses communications. The decimal number 6241 represents 4 mA, when using the Raw/Proportional Data Format. Click OK, and your configuration for the 1769-OF8C analog output module is complete.
Appendix E Two’s Complement Binary Numbers The processor memory stores 16-bit binary numbers. Two’s complement binary is used when performing mathematical calculations internal to the processor. Analog input values from the analog modules are returned to the processor in 16-bit two’s complement binary format. For positive numbers, the binary notation and two’s complement binary notation are identical.
E-2 Two’s Complement Binary Numbers Negative Decimal Values In two’s complement notation, the far left position is always 1 for negative values. The equivalent decimal value of the binary number is obtained by subtracting the value of the far left position, 32768, from the sum of the values of the other positions. In Figure E.2 all positions are 1 and the value is 32767 32768 = -1. Figure E.
Glossary The following terms and abbreviations are used throughout this manual. For definitions of terms not listed here refer to Allen-Bradley’s Industrial Automation Glossary, Publication AG-7.1. A/D Converter– Refers to the analog to digital converter inherent to the module. The converter produces a digital value whose magnitude is proportional to the magnitude of an analog input signal.
2 configuration word – Contains the channel configuration information needed by the module to configure and operate each channel. D/A Converter– Refers to the digital to analog converter inherent to the output module. The converter produces an analog dc voltage or current signal whose instantaneous magnitude is proportional to the magnitude of a digital value. dB – (decibel) A logarithmic measure of the ratio of two signal levels.
3 LSB – (Least Significant Bit) The bit that represents the smallest value within a string of bits. For analog modules, 16-bit, two’s complement binary codes are used in the I/O image in the card. For analog inputs, the LSB is defined as the rightmost bit, bit 0, of the 16-bit field. For analog outputs, the three rightmost bits are not significant, and the LSB is defined as the third bit from the right, bit 2, of the 16-bit field.
4 overall accuracy – The worst-case deviation of the output voltage or current from the ideal over the full output range is the overall accuracy. For inputs, the worst-case deviation of the digital representation of the input signal from the ideal over the full input range is the overall accuracy. this is expressed in percent of full scale. Gain error, offset error, and linearity error all contribute to input and output channel accuracy.
Index Numerics 1769-ADN configuration example D-1–D-10 user manual Preface-2 -3 dB frequency 3-7, 3-24 A A/D converter 1-7 definition 1-1 abbreviations 1-1 alarm deadband 3-31 alarms process alarm 3-30 analog input data 3-3, 3-18 analog input module definition 1-1 overview 1-1 attenuation cut-off frequency 3-7 definition 1-1 B bus connector definition 1-1 locking 2-6 bus interface 1-5 C calibration 1-10 1769-IF4 A-3 1769-OF2 A-7 channel definition 1-1 channel diagnostics 5-3 channel reconfiguration time
2 Index errors configuration 5-6 critical 5-4 extended error information field 5-5 hardware 5-5 module error field 5-5 non-critical 5-4 European Union Directives 2-1 extended error codes 5-6 extended error information field 5-5 external power switch 2-10 F fault condition at power-up 1-6 fault mode 4-8 fault value 4-11, 4-31 filter 3-6, 3-23 definition 1-2 filter frequency 3-6, 3-23 and channel step response 3-6, 3-23 and channel update time 3-7, 3-24 definition 1-2 finger-safe terminal block 2-16 freque
Index M module error field 5-5 module inhibit function 5-12 module scan time definition 1-3 module update time 3-8, 3-24 definition 1-3 examples 3-9, 3-26 mounting 2-6–2-8 multiplexer definition 1-3 multiplexing 1-7 N negative decimal values E-2 noise rejection 3-6, 3-23 normal mode rejection definition 1-3 ratio A-3 number of significant bits definition 1-3 O open-circuit detection 3-3, 3-19, 5-3 operation system 1-6 out-of-range detection 5-3 over-range flag bits 3-3, 3-19, 4-3, 4-20 under-range flag
4 Index T terminal block removing 2-15 wiring 2-16 terminal door label 2-18 terminal screw torque 2-16 troubleshooting safety considerations 5-1 two’s complement binary numbers E-1 U under-range flag bits 3-3, 3-19, 4-3, 4-20 update time. See channel update time. update time. See module update time.
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