DVP-ES2-EX2-SS2-SA2-SX2-Operation Manual

3. Instruction Set
Flag Function Action
System
COM3 data receiving error. M1319 will be set ON when errors occur sets,
M1319
and the error code will be stored in D1252
user
resets
Special register
D1038
D1109
D1169
D1252
D1253
D1255
Function
Delay time of data response when PLC is SLAVE in COM2, COM3
RS-485 communication, Range: 0~10,000. (unit: 0.1ms).
By using EASY PLC LINK in COM2, D1038 can be set to send next
communication data with delay. (unit: one scan cycle)
COM3 (RS-485) communication protocol. Refer to the following table in
point 4 for protocol setting.
The specific end word to be detected for RS instruction to execute an
interruption request (I160) on COM3 (RS-485).
Supported communication instructions: RS
COM3 (RS-485) Communication time-out setting (ms). If users set up
time-out value in D1252 and the data receiving time exceeds the
time-out value, M1319 will be set ON and the error code K1 will be
stored in D1253. M1319 has to be reset manually when time-out status
is cleared.
COM3 (RS-485) communication error code
COM3 (RS-485) PLC communication address when PLC is Slave.
4. Corresponding table between COM ports and communication settings/status.
COM1 COM2 COM3 Function Description
M1138 M1120 M1136 Retain communication setting
Protocol
setting
Sending
request
M1139 M1143 M1320 ASCII/RTU mode selection
D1036 D1120 D1109 Communication protocol
D1121 D1121 D1255 PLC communication address
- M1161 - 8/16 bit mode selection
- M1121 - Indicate transmission status
M1312 M1122 M1316 Sending request
- M1126 - Set STX/ETX as user/system defined. (RS)
- M1130 - Set STX/ETX as user/system defined. (RS)
- D1124 - Definition of STX (RS)
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