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

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

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

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3. Instruction Set<br />

Points to note:<br />

Relative flags and special D registers of COM2/COM3 :<br />

COM2 COM3 Function Description<br />

M1120 M1136 Retain communication setting<br />

Protocol<br />

setting<br />

Sending<br />

M1143 M1320 ASCII/RTU mode selection<br />

D1120 D1109 Communication protocol<br />

D1121 D1255 PLC communication address<br />

M1122 M1316 Sending request<br />

request D1129 D1252 Communication timeout setting (ms)<br />

Receiving<br />

completed<br />

Errors<br />

M1127 M1318 Data receiving completed<br />

- M1319 Data receiving error<br />

- D1253 Communication error code<br />

M1129 - Communication timeout setting (ms)<br />

M1140 -<br />

COM2 (RS-485) MODRD/MODWR/MODRW<br />

data receiving error<br />

M1141 -<br />

MODRD/MODWR/MODRW parameter error<br />

(Exception Code exists in received data)<br />

Exception Code is stored in D1130<br />

D1130 -<br />

COM2 (RS-485) Error code (exception code)<br />

returning from Modbus communication<br />

3-465

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