USER’S MANUAL FX2N-8AD Analog input block
FX2N-8AD Analog input block Foreword • This manual contains text, diagrams and explanations which will guide the reader in the correct installation and operation of the FX2N-8AD Analog input block. It should be read and understood before attempting to install or use the unit. • Further information can be found in the FX0N/FX1N/FX2N/FX2NC/FX3U/FX3UC Series Hardware Manual for connecting main unit, and the FX Series Programming Manual(ΙΙ).
FX2N-8AD Analog input block FX2N-8AD Analog input block USER’S MANUAL Manual number : JY992D86001 Manual revision : F Date : September 2008 This manual confers no industrial property rights or any rights of any other kind, nor does it confer any patent licenses. Mitsubishi Electric Corporation cannot be held responsible for any problems involving industrial property rights which may occur as a result of using the contents noted in this manual.
FX2N-8AD Analog input block ii
FX2N-8AD Analog input block Guidelines for the Safety of the User and Protection of the FX2N-8AD Analog input block. This manual provides information for the use of the FX2N-8AD Analog input block. The manual has been written to be used by trained and competent personnel.
FX2N-8AD Analog input block Notes on the Symbols Used in this Manual At various times throughout this manual certain symbols will be used to highlight points which are intended to ensure the users personal safety and protect the integrity of equipment. Whenever any of the following symbols are encountered its associated note must be read and understood. Each of the symbols used will now be listed with a brief description of its meaning.
FX2N-8AD Analog input block • Under no circumstances will Mitsubishi Electric be liable responsible for any consequential damage that may arise as a result of the installation or use of this equipment. • All examples and diagrams shown in this manual are intended only as an aid to understanding the text, not to guarantee operation. Mitsubishi Electric will accept no responsibility for actual use of the product based on these illustrative examples.
FX2N-8AD Analog input block vi
FX2N-8AD Analog input block Contents. Guideline............................................................................................................................iii 1. 2. 3. 4. 5. 6. Introduction .........................................................................................1-1 External Dimensions ...........................................................................2-1 Part Name ...........................................................................................
FX2N-8AD Analog input block 8.2.14 8.2.15 8.2.16 8.2.17 8.2.18 8.2.19 8.2.20 8.2.21 8.2.22 8.2.23 8.2.24 8.2.25 Contents. BFM #32: Operating time .................................................................................. 8-26 BFM#33 disconnection detection (Only goods: since V1.10)............................ 8-27 BFM #41 to BFM #48: Offset data BFM #51 to BFM #58: Gain data....................................................................... 8-28 BFM #61 to BFM #68: Addition data .............
FX2N-8AD Analog input block 1. Introduction 1 Introduction The FX2N-8AD analog input block (hereafter referred to as "FX2N-8AD") converts 8 points of analog input values (voltage input, current input and temperature input) into digital values, and transfers them to the PLC main unit. The FX2N-8AD can be connected to FX0N/FX1N/FX2N/FX2NC/FX3U/FX3UC Series PLC.
FX2N-8AD Analog input block Introduction 1 4) Up to two FX2N-8AD units can be connected to FX0N main unit, FX0N extension unit, FX1N main unit. Up to eight FX2N-8AD units can be connected to the FX2N/FX3U/FX3UC*1 Series PLC. Up to four FX2N-8AD units can be connected to the FX2NC Series PLC. (For connection to the FX2NC Series PLC, FX2NC-CNV-IF is required.) (For connection to the FX3UC Series PLC, FX3UC-1PS-5V or FX2NC-CNV-IF is required.
FX2N-8AD Analog input block External Dimensions 7.5(0.30) Figure 2.1: External Dimensions V2+ I2+ I3+ COM1 COM3 V3+ I4+ COM4 COM2 V4+ FX2N-8AD POWER 24V V6+ V5+ I6+ I5+ I8+ COM6 V8+ COM8 V7+ I7+ COM7 COM5 67(2.64) (installation dimension) 105(4.13) 24- 7.5(0.30) I1+ V1+ 24+ 98(3.86) (installation dimension) 75(2.95) 8(0.31) 90(3.54) 2. External Dimensions 2 75(2.95) 8(0.31) Dimensions: mm(inch) Mass(Weight): 0.3 kg(0.
FX2N-8AD Analog input block External Dimensions 2 MEMO 2-2
FX2N-8AD Analog input block 3. Part Name 3 Part Name Figure 3.1: Part name Installation hole (screw M4) Table 3.1: Status indicator LED Status indicator LED Extension cable V1+ 24+ 24- I1+ V2+ I2+ V3+ I3+ COM1 COM3 V4+ I4+ COM4 COM2 Extension connector FX 2N-8AD Indication Description POWER Lit while 5 V power is normally supplied from PLC. 24 V Lit while 24 V power is normally supplied to “24+” and “24-” terminals of FX2N-8AD.
FX2N-8AD Analog input block Part Name 3 MEMO 3-2
FX2N-8AD Analog input block 4. Installation 4 Installation Install the FX2N-8AD to the right side of a main unit, extension unit, extension block or special block of the FX0N/FX1N/FX2N/FX2NC/FX3U/FX3UC Series PLC. The FX 2N-8AD can be installed with a DIN rail (DIN46277 of 35 mm in width) or directly installed with screws M4. For the details, refer to the handy manual supplied together with the PLC main unit.
FX2N-8AD Analog input block Installation 4 Figure 4.1: Installation with DIN rail V1+ 24- 24+ I1+ V2+ I2+ • The FX2N-8AD can be installed on a DIN rail (DIN46277) of 35 mm in width as it is. For removal, pull down on the DIN rail mounting hook, then remove the FX2N-8AD. COM1 COM3 V3+ I3+ COM2 I4+ COM4 V4+ FX2N-8AD POWER 24V V6+ V5+ I6+ I5+ I8+ V8+ COM8 COM6 V7+ COM5 COM7 I7+ Hook for DIN rail Figure 4.2: Direct installation 98(3.
FX2N-8AD Analog input block 5. Connection to PLC 5 Connection to PLC Connect the FX2N-8AD to the right side of a main unit, extension unit or extension block of FX0N/FX1N/FX2N/FX2NC/FX3U/FX3UC Series PLC with an extension cable. For connection to a main unit or extension block of the FX2NC Series PLC, FX2NC-CNV-IF is required. For connection to a main unit or extension block of the FX3UC Series PLC, FX3UC-1PS-5V or FX2NC-CNV-IF is required.
FX2N-8AD Analog input block Connection to PLC 5 MEMO 5-2
FX2N-8AD Analog input block 6. Wiring 6.1 Caution Wiring 6 1) Do not lay signal cable near to high voltage power cable or house them in the same trunking duct. Effects of noise or surge induction may occur. Keep signal cables a safe distance of more than 100 mm (3.94") from these power cables. 2) The terminal screws of the FX2N-8AD are M3.5 (0.14"), therefore crimp style terminals (see drawing) suitable for use with these screws should be fitted to the cable for wiring. Figure 6.1: Crimp Terminals 6.
FX2N-8AD Analog input block Wiring 6 Figure 6.2: Wiring FX2N-8AD *6 Thermocouple (K, J or T type) 5.8kΩ V3+ 250Ω I3+ COM3 *1 Shielded cable Current input 200kΩ *3 V2+ 5.8kΩ 250Ω I2+ COM2 Voltage input V1+ *2 200kΩ COM1 CH2 5.8kΩ 250Ω I1+ CH3 200kΩ CH1 AG +15V *5 DC24V 24+ 24- DC/DC converter *4 Connected to terminal of PLC main unit AG -15V Class D grounding Note: Use solderless terminals of the following size (M3.5). Tighten them securely at the tightening torque of 0.5 to 0.
FX2N-8AD Analog input block Wiring 6 *1 Use a two-core, twisted, shielded cable for the analog input line, and separate it from other power lines or a lines easily induced. *2 If there is voltage ripple in the input or there is noise in the external wiring, connect a capacitor of approximately 0.1 to 0.47 µF, 25 V. *3 For the current input, make sure to short-circuit the “VO+” terminal and the “IO+” terminal (O: input channel No.).
FX2N-8AD Analog input block Wiring 6 MEMO 6-4
FX2N-8AD Analog input block 7. Specifications 7 Specifications Table 7.1: General specifications Item Specifications Ambient temperature 0 to +55 °C during operation, -20 to +70 °C during storage range Ambient humidity 35 to 85 % RH during operation (Dew condensation shall not be allowed.) Vibration resistance Frequency 10 to 57 Hz, half amplitude 0.075 mm, 57 to 150 Hz, acceleration 9.8 m/s2, 10 times in each of X, Y and Z directions (80 min.
FX2N-8AD Analog input block Specifications 7 Table 7.2: Power supply specifications Item Specifications Interface driving power supply 24 V DC±10%, 80 mA (maximum), supplied via terminal from outside CPU driving power supply 5 V DC, 50 mA, supplied via extension cable from PLC main unit Table 7.
FX2N-8AD Analog input block Specifications 7 Table 7.4: Voltage/current input specifications Item Voltage input Current input Analog input range -10 to +10 V DC (input resistance: 200 kΩ) Adjustment is enabled in following condition: Offset value: -10 to +9 V Gain value: 10 V or less "Gain - Offset": > 1 V (Resolution is constant.) However, change is disabled while analog value direct display is used.
FX2N-8AD Analog input block Specifications 7 Table 7.5: Thermocouple input specifications (JIS C 1602-1995) Item K type thermocouple J type thermocouple T type thermocouple Analog input range -100 to 1200 °C -148 to 2192 °F -100 to 600 °C -148 to 1112 °F -100 to 350 °C -148 to 662 °F Digital output Signed 16-bit binary Signed 16-bit binary Signed 16-bit binary Resolution 0.1 °C or 0.1 °F 0.1 °C or 0.1 °F 0.1 °C or 0.
FX2N-8AD Analog input block 8. Buffer Memory (BFM) 8 Buffer Memory (BFM) Caution 1) Do not access the buffer memory of “Reserved” (BFM #18, #23, #25, #31, #33 to #40, #49 to 50, #59, #60, #69, #70, #79, #80, #89, #90, #99, #100, #120 to #197) by the FROM/TO instruction. There is a possibility to cause abnormal operation of the FX2N8AD if accessing these buffer memories.
FX2N-8AD Analog input block Buffer Memory (BFM) 8 Data transfer between the FX 2N -8AD and the PLC main unit is performed through buffer memories (hereafter referred to as "BFM") of the FX2N-8AD. Each BFM consists of 1 word, 16 bits. The BFM No. 0 to 3399 and a function are assigned to each BFM. Use FROM/TO instructions to read and write the data between the BFM and the PLC. When the power is turned on from off, the initial value is written to each BFM.
FX2N-8AD Analog input block 8.1 Buffer Memory (BFM) 8 Buffer Memories (BFM) lists Table 8.1: BFM Lists BFM No. Description Hold against power failure Initial value #0 Specifies input mode of CH1 to CH4. { H0000 at shipment #1 Specifies input mode of CH5 to CH8.
FX2N-8AD Analog input block Buffer Memory (BFM) 8 Table 8.1: BFM Lists BFM No. Description Hold against power failure Initial value #18 Reserved ⎯ ⎯ #19 Disables setting change of I/O characteristics (BFM #0, BFM #1, BFM #21) and convenient functions (BFM #22). Disables change.: K2, Enables change.: K1 { K1 at shipment #20 Initializes functions. (Initializes functions at K1, then returns automatically to K0 after initialization is completed.) ⎯ K0 #21 Writes I/O characteristics.
FX2N-8AD Analog input block Buffer Memory (BFM) 8 Table 8.1: BFM Lists BFM No. Hold against power failure Initial value #32 Operating time 0 to 64,800 (s) After that, 64,800 is kept. Measurement starts when power is turned on, and measured value is reset when power is turned off. ⎯ K0 #33 Thermo-couple disconnection detection(V1.10 or higher.) It executes the disconnection detection with K1. It automatically returns to K0 after it completes it.
FX2N-8AD Analog input block Buffer Memory (BFM) 8 Table 8.1: BFM Lists BFM No.
FX2N-8AD Analog input block Buffer Memory (BFM) 8 Table 8.1: BFM Lists BFM No.
FX2N-8AD Analog input block Buffer Memory (BFM) 8 Table 8.1: BFM Lists BFM No.
FX2N-8AD Analog input block Buffer Memory (BFM) 8 Table 8.1: BFM Lists BFM No.
FX2N-8AD Analog input block Buffer Memory (BFM) 8 Table 8.1: BFM Lists BFM No.
FX2N-8AD Analog input block Buffer Memory (BFM) 8 Table 8.1: BFM Lists BFM No. Hold against power failure Initial value Resets or stops data history.
FX2N-8AD Analog input block Buffer Memory (BFM) 8 Table 8.1: BFM Lists BFM No. Description • • • #3397 CH8 data history (398th value) #3398 CH8 data history (399th value) #3399 CH8 data history (400th value) Data history sampling is valid only in channels for which number of times of averaging (BFM #2 to #9) is set to "1".
FX2N-8AD Analog input block Buffer Memory (BFM) 8 8.2 Details of buffer memories 8.2.1 BFM #0, #1: Specifies input mode. Specify the input mode of CH1 to CH4 by writing a numeric value to BFM #0. Specify the input mode of CH5 to CH8 by writing a numeric value to BFM #1. In the input mode specification, each BFM is expressed in a 4-digit hexadecimal code, and each channel No. is assigned to each digit. Specify a numeric value 0 to F in each digit for each channel.
FX2N-8AD Analog input block Buffer Memory (BFM) 8 {=8: Current input mode, analog value direct display (-20,000 to +20,000), resolution 2.50 µA {=9: Thermocouple input mode, K type, Celsius display (-100 to +1,200°C), resolution 0.1°C {=A: Thermocouple input mode, J type, Celsius display (-100 to +600°C), resolution 0.1°C {=B: Thermocouple input mode, T type, Celsius display (-100 to +350°C), resolution 0.1°C {=C: Thermocouple input mode, K type, Farenheit display (-148 to +2,192°F), resolution 0.
FX2N-8AD Analog input block 8.2.2 Buffer Memory (BFM) 8 BFM #2 to BFM #9: Number of times of averaging When using BFM #10 to #17 as the average data, write the number of times of averaging to BFM #2 to BFM #9. The setting range of the number of times of averaging is 1 to 4,095. However, when you set the number of times of averaging to "1", the immediate data (current value) is stored in BFM #10 to BFM #17. When you set the number of times of averaging to "0" or a smaller value, "0" is written.
FX2N-8AD Analog input block Buffer Memory (BFM) 8 Update of average data • When the number of times of averaging (BFM #2 to BFM #9) is set to "400" or less, the average (BFM #10 to BFM #17) is updated every time the A/D conversion processing is performed. At this time, the average is always calculated by sampling of the A/D conversion values as many as the set number of times of averaging from the latest one.
FX2N-8AD Analog input block 8.2.3 Buffer Memory (BFM) 8 BFM #10 to BFM #17: Channel data The A/D conversion data of each channel is written to BFM #10 to BFM #17. You can select the immediate (current value) data or the average data by setting the number of times of averaging (BFM #2 to BFM #9) described above. 8.2.
FX2N-8AD Analog input block 8.2.6 Buffer Memory (BFM) 8 BFM #21: Writes I/O characteristics Each channel No. is assigned to the lower eight bits of BFM #21. When a bit is set to ON, the offset data (BFM #41 to BFM #48) and the gain data (BFM #51 to BFM #58) of the assigned channel No. are written to the built-in memory (EEPROM), and become valid. You can give the write command to two or more channels at a time. (When you input "HFF", all channels are written.
FX2N-8AD Analog input block 8.2.7 Buffer Memory (BFM) 8 BFM #22: Sets convenient functions The functions described below are assigned to b0 to b3 of BFM #22. When a bit is set to ON, the assigned function becomes valid. When a bit is set to OFF, the assigned function becomes invalid.
FX2N-8AD Analog input block 8.2.8 Buffer Memory (BFM) 8 BFM #24: Specifies high-speed conversion channel When using only the voltage input mode and the current input mode, you can improve the A/D conversion timing (to 1/4 of the normal timing) for only one channel among CH1 to CH8. However, the conversion timing becomes slower in other channels (to twice of the normal timing). To select a channel, write "K1" (for CH1) to "K8" (for CH8) to BFM #24.
FX2N-8AD Analog input block 8.2.9 Buffer Memory (BFM) 8 BFM #26: Upper/lower limit value error status When you use the upper/lower limit value detection function (BFM #22 b1), the detection result is written to BFM #26. The lower limit value error or the upper limit value error of each channel is assigned to each bit of BFM #26.
FX2N-8AD Analog input block 8.2.10 Buffer Memory (BFM) 8 BFM #27: A/D data sudden change detection status When you use the sudden change detection function (BFM #22 b2), the detection result is written to BFM #27. The sudden change detection + direction or the sudden change detection - direction of each channel is assigned to each bit of BFM #27.
FX2N-8AD Analog input block 8.2.11 Buffer Memory (BFM) 8 BFM #28: Scale over status When the analog input value of each channel is outside the range in which input is available, the result is written to BFM #28. Table 8.4: Range in which input is available Voltage input mode - 10.240V to 10.235V Current input mode*1 - 20.480mA to 20.
FX2N-8AD Analog input block Buffer Memory (BFM) 8 Table 8.5: Bit assignment in BFM #28 Bit Channel No. No.
FX2N-8AD Analog input block 8.2.12 Buffer Memory (BFM) 8 BFM #29: Error status The error information is assigned to each bit of BFM #29. Table 8.6: Bit assignment in BFM #29 Bit No. Assignment Description b0 Error detected b0 is ON while either one among b1 to b4 is ON. b1 Offset/gain set value error Offset/gain value is outside setting range. Set a correct value. b2 Power error 24 V power is not normally supplied. Check wiring and supply voltage. b3 Hardware error FX2N-8AD may have failed.
FX2N-8AD Analog input block Buffer Memory (BFM) 8 Table 8.6: Bit assignment in BFM #29 Bit No. Assignment b9 Input mode setting error Input mode (BFM #0, BFM #1) is incorrectly set. Set it within range from 0 to F. b10 Number of times of averaging setting error Number of times of averaging is incorrectly set. Set it within range from 1 to 4,095. b11 ⎯ ⎯ b12 Sudden change detection set value error Sudden change detection set value is incorrect. Set a correct value.
FX2N-8AD Analog input block 8.2.15 Buffer Memory (BFM) 8 BFM#33 disconnection detection (Only goods: since V1.10). It does the disconnection detection of all channels used by writing K1 in BFM#33 in the thermo-couple input mode (Set it by BFM#1 and # 0). It executes the disconnection detection only once, and the result is written in BFM#28. (It turns on the odd number bit of the channel where the disconnection occurs. Refer to Table 8.5.
FX2N-8AD Analog input block 8.2.16 Buffer Memory (BFM) 8 BFM #41 to BFM #48: Offset data BFM #51 to BFM #58: Gain data Offset data : Analog input value when the digital value is "0" Gain data : Analog input value when the digital value is as shown below (The digital value varies depending on the setting of the input mode.) Standard digital value of offset and gain in each input mode (A number in the input mode column indicates a value set in BFM #0, BFM #1.) Table 8.
FX2N-8AD Analog input block Buffer Memory (BFM) 8 Initial offset/gain value (Unit: mV for voltage input, µA for current input) Table 8.8: Initial offset/gain value Input mode (BFM #0, BFM #1) 0 1 2 3 4 5 6 7 8 Initial offset value 0 0 0 4000 4000 4000 0 0 0 5000 5000 5000 20000 20000 20000 20000 20000 20000 Initial gain value Setting range Table 8.
FX2N-8AD Analog input block 8.2.17 Buffer Memory (BFM) 8 BFM #61 to BFM #68: Addition data When you use the data addition function (BFM #22 b0), the data (BFM #10 to BFM #17), the peak value (BFM #101 to BFM #108, BFM #111 to BFM #118) and the data history (BFM #200 to BFM #999) of each channel become the measured value added by the addition data (BFM #61 to BFM #68).
FX2N-8AD Analog input block 8.2.18 Buffer Memory (BFM) 8 BFM #71 to BFM #78: Lower limit, error set value BFM #81 to BFM #88: Upper limit, error set value When using the upper/lower limit value detection function (BFM #22 b1), write the lower limit value of each channel to BFM #71 to BFM #79 and the upper limit value of each channel to BFM #81 to BFM #88.
FX2N-8AD Analog input block Buffer Memory (BFM) 8 Table 8.
FX2N-8AD Analog input block 8.2.19 Buffer Memory (BFM) 8 BFM #91 to BFM #98: Sudden change detection set value When using the sudden change detection function (BFM #22 b2), write the set value to judge the sudden change. When the data (BFM #10 to BFM #17) of each channel is updated, if the difference between the previous value and the new value is larger than the sudden change detection set value (BFM #91 to BFM #98), the result is written to the sudden change detection status (BFM #27).
FX2N-8AD Analog input block Buffer Memory (BFM) 8 Table 8.
FX2N-8AD Analog input block 8.2.20 Buffer Memory (BFM) 8 BFM #99: Clears upper/lower limit value error and sudden change detection error The commands to clear the lower limit value error, the upper limit value error and the sudden change detection error are assigned to the lower three bits of BFM #99. When a bit is set to ON, the flag of the corresponding error status (BFM #26, BFM #27) is reset for all channels at a time. After reset is finished, each bit of BFM #99 returns automatically to OFF.
FX2N-8AD Analog input block 8.2.21 Buffer Memory (BFM) 8 BFM #101 to BFM #108: Peak value (minimum value) BFM #111 to BFM #118: Peak value (maximum value) When you use the peak value hold function (BFM #22 b3), one of the convenient functions, the minimum value of the data (BFM #10 to BFM #17) of each channel is written to BFM #101 to BFM #108, and the maximum value is written to BFM #111 to BFM #118.
FX2N-8AD Analog input block 8.2.22 Buffer Memory (BFM) 8 BFM #109: Peak value reset flag (minimum value) BFM #119: Peak value reset flag (maximum value) When you use the peak value hold function (BFM #22 b3), BFM #109 clears the peak value (minimum value) stored in BFM #101 to BFM #108, and BFM #119 clears the peak value (maximum value) stored in BFM #111 to BFM #118. The channel No. to be reset is assigned to each bit of BFM #109 and BFM #119.
FX2N-8AD Analog input block 8.2.23 Buffer Memory (BFM) 8 BFM #198: Data history sampling time Set the data history sampling time. BFM #198 is valid only in channels for which the number of times of averaging (BFM #2 to #9) is set to "1".
FX2N-8AD Analog input block Buffer Memory (BFM) 8 When the high-speed conversion mode is used (and only voltage input and current input are used) When the set value is "0" or "1" Channel specified for high-speed conversion : 1 ms Other channels : 1 ms x Number of effective channels When the set value is "2" or more Channel specified for high-speed conversion : Set value (ms) x Number of effective channels Other channels : Set value (ms) x Number of effective channels x 2 • "Number of effective channels"
FX2N-8AD Analog input block 8.2.24 Buffer Memory (BFM) 8 BFM #199: Resets or stops data history The data history reset function is assigned to the lower eight bits of BFM #199. The data history stop function is assigned to the upper eight bits of BFM #199. Each function is valid only in channels for which the number of times of averaging (BFM #2 to #9) is set to "1". Data history reset function This function clears the sampled data history in each channel. The channel No.
FX2N-8AD Analog input block 8.2.25 Buffer Memory (BFM) 8 BFM #200 to BFM #3399: Data history The A/D conversion of each channel is sampled, and written to BFM #200 to BFM #3399. The table below shows the assignment of channel No. and BFM No. Data is stored in turn from the smallest BFM No. Up to 400 values can be stored for each channel. When the number of values exceeds "400", the existing data is overwritten with new data from the smallest BFM No.
FX2N-8AD Analog input block Buffer Memory (BFM) 8 MEMO 8-42
FX2N-8AD Analog input block 9. Adjustment of I/O Characteristics 9 Adjustment of I/O Characteristics At the time of shipment from the factory, the FX2N-8AD has the standard I/O characteristics in accordance with each input mode (BFM #0, BFM #1). In the voltage input mode and the current input mode, you can adjust the standard I/O characteristics for each channel. (You cannot adjust the standard I/O characteristics in the analog value direct output mode and the thermocouple input mode.
FX2N-8AD Analog input block Standard I/O characteristics Explanation on description The input mode of the standard I/O characteristics is abbreviated as shown below. 0. Voltage input, -10 to 10V, 20V × 1/32,000 ➃ ➁ ➀ ➂ ➀ : Input mode set in BFM #0, BFM #1 ➁ : Input mode ➂ : Analog input range ➃ : Resolution Figure 9.1: Standard I/O characteristics 0.
FX2N-8AD Analog input block Adjustment of I/O Characteristics 9 2. Voltage input, direct display (-10,000 to +10,000) 3. Current input, 4 to 20 mA, 16 mA x 1/8,000 Digital value Digital value -10 Approx. -10.2 V Input voltage (V) Approx. +10.2 V Approx. -10,200 10,000 8,000 10 -10,000 Approx. +10,200 4. Current input, 4 to 20 mA, 16 mA x 1/4,000 Digital value 0 4 20 Input current (mA) 5.
FX2N-8AD Analog input block Adjustment of I/O Characteristics 9 6. Current input, -20 to +20 mA, 40 mA x 1/16,000 Input current (mA) 7. Current input, -20 to +20 mA, 40 mA x 1/8,000 Digital value Digital value 8,000 4,000 Input current (mA) -20 0 -20 0 20 -8,000 20 -4,000 8. Current input, direct display (-20,000 to +20,000) 9.
FX2N-8AD Analog input block Adjustment of I/O Characteristics 9 A. Thermocouple input, J type, Celsius B. Thermocouple input, T type, Celsius Digital value Digital value 6,000 3,500 Input temperature (°C) Input temperature (°C) -100 -100 0 0 600 -1,000 350 -1,000 C. Thermocouple input, K type, Farenheit Digital value D.
FX2N-8AD Analog input block Adjustment of I/O Characteristics 9 E.
FX2N-8AD Analog input block 9.2 Adjustment of I/O Characteristics 9 Adjustment of I/O characteristics Adjust the I/O characteristics using the buffer memories in the FX2N-8AD. At first, write the input mode to BFM #0 and BFM #1, write the offset data to BFM #41 to BFM #48, then write the gain data to BFM #51 to BFM #58. After that, update the offset data and the gain data of each channel using BFM #21.
FX2N-8AD Analog input block Adjustment of I/O Characteristics 9 Figure 9.2: Example program X000 Operation start instruction M0 TO P K0 K0 H1600 K1 Specifies the input mode of CH1 to CH4. TO P K0 K1 HFFA1 K1 Specifies the input mode of CH5 to CH8. SET M0 TO T0 K50 *1 TO P K0 K41 K0 K2 Writes the offset value of CH1 and CH2. TO P K0 K51 K1250 K2 Writes the gain value of CH1 and CH2. TO P K0 K44 K0 K1 Writes the offset value of CH4.
FX2N-8AD Analog input block 10. Example program 10 Example program This section introduces an example of program to take analog data to the PLC using the FX2N8AD. Condition System configuration: The FX2N-8AD (unit No. 0) is connected as a special block nearest to the FX2N/FX2NC Series PLC main unit.
FX2N-8AD Analog input block Example program 10 Data history function: Used while sampling time is set to 0 ms (initial value). CH1 to CH4 : Sampling time = 1 ms x 6 (Number of effective channels) = 6 ms CH5 and CH6 : Sampling time = 40 ms x 6 (Number of effective channels) = 240 ms I/O assignment: X001 X002 Y000 to Y017 Y020 to Y037 : Clears the upper/lower limit value error. : Clears the scale over error. : Output the upper/lower limit value error status of each channel.
FX2N-8AD Analog input block Example program 10 Figure 10.1:Example program Initial pulse M8002 RUN monitor M8000 FNC 79 TO K0 K0 H3300 K1 FNC 79 TO K0 K1 HFF99 K1 TO T0 Clear of upper/ lower limit value error X001 Clear of scale over error X002 Specifies the input mode of CH1 to CH4. Specifies the input mode of CH5 to CH8. Stand by for five seconds. K50 As for the changed input mode, the power failure maintenance is done by EEPROM.
FX2N-8AD Analog input block Example program 10 Lower limit value error of CH1 M0 Y0 Upper limit value error of CH1 M1 ••• Y1 Outputs the upper/lower limit value error status of each channel. Upper limit value error of CH8 M15 Y17 Scale over error of CH1 (lower limit value) M20 Y20 Scale over error of CH1 (upper limit value) M21 ••• Y21 Outputs the scale over error status of each channel.
FX2N-8AD Analog input block T0 Example program 10 FNC 78 FROM K0 K200 D10 K10 FNC 07 WDT FNC 78 FROM Refreshes the watch dog timer.*1 K0 K600 D20 K10 FNC 07 WDT FNC 78 FROM FNC 07 WDT Reads the CH2 data history (for 10 times) to D20 to D29. Refreshes the watch dog timer.*1 K0 K1000 D30 K10 FNC 07 WDT FNC 78 FROM Reads the CH1 data history (for 10 times) to D10 to D19. Reads the CH3 data history (for 10 times) to D30 to D39. Refreshes the watch dog timer.
FX2N-8AD Analog input block Example program 10 MEMO 10-6
FX2N-8AD Analog input block Appendix A Appendix A: Associated Manuals List For further information manual about FX Series, refer to following table. Table A-1: List of Further Information Manual Manual Name Manual No. Description FX0/FX0N Hardware Manual This manual explains the wiring, installation and JY992D47501 specifications for FX0 and FX0N Series programmable controllers.
FX2N-8AD Analog input block Table A-1: Appendix A List of Further Information Manual Manual Name Manual No. Description FX Programming Manual This manual explains instructions for FX0, FX0S, FX0N, JY992D48301 FX, FX2C, FX2N and FX2NC Series programmable controllers. FX Programming Manual ΙΙ JY992D88101 This manual explains instructions for FX1S, FX1N, FX2N and FX2NC Series programmable controllers.
USER’S MANUAL FX2N-8AD Analog input block HEAD OFFICE : TOKYO BUILDING, 2-7-3 MARUNOUCHI, CHIYODA-KU, TOKYO 100-8310, JAPAN HIMEJI WORKS : 840, CHIYODA CHO, HIMEJI, JAPAN MODEL FX2N-8AD-U-E MODEL CODE 09R608 JY992D86001F (MEE) Effective Sep. 2008 Specifications are subject to change without notice.
