343GB RS-232C Communication Unit DL-RS1A User's Manual (GT2 Edition) Read this manual before using the system in order to achieve maximum performance. Keep this manual in a safe place for future reference.
Introduction This manual provides an overview of the RS-232C communication unit DL-RS1A and describes the functions and procedures of the unit. Be sure to read this manual carefully to ensure safe performance and function of the unit. Keep this manual in a safe place for future reference. Ensure that this manual is passed to the end user. Safety Precautions General Cautions • At startup and during operation, be sure to monitor the functions and performance of the DL-RS1A for proper operations.
Contents T4 (DL-RS1A command processing time) ................................................................................ 16 T5 (Response send time from DL-RS1A) .................................................................................. 17 T6 (Sensor amplifier settings change time)............................................................................... 17 Safety Precautions General Cautions Handling Errors Operating Precautions Specifications Performance Specifications ................
Before Using the Unit Before Using the Unit (1) Communication setup switches You can use different ON/OFF combinations to configure the communication settings. Checking the Package Contents Setting Switch No. Combination Before using the DL-RS1A, check that the following items are all included. 1 2400bit/s 4800bit/s ON 2 Baud rate ON 1 2 3 9600bit/s* ON 1 2 3 19200bit/s 38400bit/s ON ON 1 2 3 1 2 3 1 2 3 * Factory default positions are shown.
Connecting the Unit to Sensor Amplifiers Before Using the Unit This section describes how to mount a DL-RS1A and connect it to sensor amplifiers. (5) Alarm indicator This indicator lights up in red. For information on the actions you should take when an alarm occurs, refer to "Troubleshooting" (page 19). After turning on the power, the alarm indicator lights for the following amount of time, and communication cannot be performed during this time. No.
Connecting the Unit to Sensor Amplifiers Connecting the Unit to Sensor Amplifiers ■ Connecting the DL-RS1A to DIN rail mount sensor amplifiers Connecting the Unit to Sensor Amplifiers 1 NOTICE Name Type of amplifier DIN rail mount High-accuracy digital contact sensor GT2 Series *1 Panel mount Large display type *2 Sensor amplifier Expansion protective cover Make sure that the sensor amplifiers are turned off before connecting the RS232C communication unit DL-RS1A to them.
Connecting the Unit to External Devices Connecting the Unit to Sensor Amplifiers ■ Connecting the unit to panel mount sensor amplifiers 1 Connect DL-RS1A to the sensor amplifiers using the optional expansion cable (OP-35361). Communication Terminal Block You can connect external devices such as a PC or PLC to the communication terminal block of DL-RS1A via the communication cables.
Connecting the Unit to External Devices Connecting the Unit to External Devices ■ Connection wiring Sample wiring Refer to the connection wiring diagram shown below when connecting DL-RS1A to an external device such as a PC.
Communication Specifications This section provides the communication specifications of DL-RS1A and describes how to configure the unit. Communication Specifications ■ Large display type sensor amplifiers (GT2-100N/100P) DL-RS1A Communication Specifications The following table lists the communication specifications for DL-RS1A.
Commands and Responses Commands and Responses ■ Response Overview of Commands and Responses ID No. 00 01 02 13 14 When DL-RS1A successfully receives a command from the external device, it automatically returns a response based on ASCII codes. For information on the parameters used in the response, refer to "Parameters of Commands and Responses" (page 11). Command or DRQ input Sample response structure S Main Exp. Exp. Exp. Exp.
Commands and Responses Commands and Responses ■ Error response If DL-RS1A could not receive a command from the external device or if the received command included an error, it automatically returns an "error response" based on ASCII codes. For information on the parameters used in the error response, refer to page 11. R (1) , S R (2) , Command Error No. CR LF (3) (4) S (1) Contains "ER". (2) Contains the same communication command as the received command.
Commands and Responses Commands and Responses Read output states and data from all sensor amplifiers (MS command) Writing Command M S External devices such as PLC's use the following communication commands to write data to DL-RS1A.
Parameters of Commands and Responses This section describes the parameters used with various commands and responses. ■ Data numbers Specify the data number using three digits (ASCII characters). ■ Communication commands ● Read-only data There are two types of communication commands: read commands and write commands. Communication command Parameters of Commands and Responses The following table lists the types of data that can only be read from GT2 Series sensor amplifiers.
Parameters of Commands and Responses *3 This data type can only be read when the Detection mode of the sensor amplifiers is "Peak-to-peak" hold. Reference *4 Parameters of Commands and Responses This data type allows you to read the peak and bottom values during the measurement period. This data type can only be read when the calculation function is used. The data can only be read from the main unit (ID: 00) when performing a calculation other than reference difference. DL-RS1A reads the R.V.
Parameters of Commands and Responses Data number 102 103 *2 Response time *8 104 Timing type 105 Self-timing level 106 Self-timing delay type 107 User-specified delay time 108 Static hold delay stable determination 109 111 Static hold delay stable range Measurement increase/decrease direction Multiplier 112 Output mode 113 Display resolution 114 Hysteresis 115 110 *1 Data name Hold update method Parameters of Commands and Responses Data format *1 * * Number Attribute *2 of byt
Communication Response Time Parameters of Commands and Responses ■ Error numbers The following table lists the error numbers that are returned as error responses when errors occur in the communication between DL-RS1A and GT2 Series sensor amplifiers. Each error number is identified with two digits (ASCII characters). Error number Error name 00 Invalid command error 02 Communication timeout error 20 Data length error 21 Number of parameters error Problem An invalid command was received.
Communication Response Time Communication Response Time ■ DRQ input The data read in response to a DRQ input is the buffered data that DL-RS1A periodically retrieves from the sensor amplifiers. Therefore, the latest data detected by the sensors can only be read after T2 (DL-RS1A data processing time) where DL-RS1A retrieves data from the sensor amplifiers. Time Frames of Communication Response Time This section describes the communication time frames (T2 to T6).
Communication Response Time Communication Response Time ● Write commands ■ T4 (DL-RS1A command processing time) The processing time varies according to the command sent from the external device.
Communication Response Time Communication Response Time ■ T5 (Response send time from DL-RS1A) ■ T6 (Sensor amplifier settings change time) The time required to send a response varies depending on the communication speed, data bit length, and number of bytes. For information on the communication settings, refer to page 2.
Specifications Specifications Performance Specifications Dimensions The following table shows the performance specifications for DL-RS1A. Item Current consumption Number of connectable sensor amplifiers Ambient temperature Relative humidity Vibration Environmental Material Weight Accessories 22.5 Varies depending on the model* 2 communication status indicators (green), alarm indicator (red), power indicator (green) Indicators 43.8 37.
Problem Cause ASCII Code Table Action Power is not Make sure that the voltage of the power supplied to the supplied. sensor amplifier main unit is 20 to 30 VDC. DL-RS1A is not The power indicator (POWER) properly inserted to Reconnect the unit following the instructions in "Connecting does not light up. the expansion the Unit to Sensor Amplifiers" (page 3). connector of the sensor amplifier.
WARRANTY KEYENCE products are strictly factory-inspected. However, in the event of a failure, contact your nearest KEYENCE office with details of the failure. Revision History Date of printing Version February 2014 First edition Revision contents Released for each model. 1. WARRANTY PERIOD The warranty period shall be for one year from the date that the product has been delivered to the location specified by the purchaser. 2.
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