Delta DVP-ES2 - Manual (Page 333)

3 . I n s t r u c t i o n S e t
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Flag Function Action
M1319
COM3 data receiving error. M1319 will be set ON when errors occur
and the error code will be stored in D1252
System
sets,
user
resets
Special register Function
D1038
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)
D1109
COM3 (RS-485) communication protocol. Refer to the following table in
point 4 for protocol setting.
D1169
The specific end word to be detected for RS instruction to execute an
interruption request (I160) on COM3 (RS-485).
Supported communication instructions: RS
D1252
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.
D1253 COM3 (RS-485) communication error code
D1255 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
M1139 M1143 M1320 ASCII/RTU mode selection
D1036 D1120 D1109 Communication protocol
Protocol
setting
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)
Sending
request
- D1124 - Definition of STX (RS)