3 . I ns t r uc ti on Se t3- 2 2 9Flag Function ActionM1319 COM3 data receiving error. M1319 will be set ON when errors occurand the error code will be stored in D1252Systemsets,userresetsSpecial register FunctionD1038Delay time of data response when PLC is SLAVE in COM2, COM3RS-485 communication, Range: 0~10,000. (unit: 0.1ms).By using EASY PLC LINK in COM2, D1038 can be set to send nextcommunication data with delay. (unit: one scan cycle)D1109 COM3 (RS-485) communication protocol. Refer to the following table inpoint 4 for protocol setting.D1169The specific end word to be detected for RS instruction to execute aninterruption request (I160) on COM3 (RS-485).Supported communication instructions: RSD1252COM3 (RS-485) Communication time-out setting (ms). If users set uptime-out value in D1252 and the data receiving time exceeds thetime-out value, M1319 will be set ON and the error code K1 will bestored in D1253. M1319 has to be reset manually when time-out statusis cleared.D1253 COM3 (RS-485) communication error codeD1255 COM3 (RS-485) PLC communication address when PLC is Slave.4. Corresponding table between COM ports and communication settings/status.COM1 COM2 COM3 Function DescriptionProtocolsettingM1138 M1120 M1136 Retain communication settingM1139 M1143 M1320 ASCII/RTU mode selectionD1036 D1120 D1109 Communication protocolD1121 D1121 D1255 PLC communication addressSendingrequest- M1161 - 8/16 bit mode selection- M1121 - Indicate transmission statusM1312 M1122 M1316 Sending request- M1126 - Set STX/ETX as user/system defined. (RS)RS)RSTX/ETX- M1130 - Set STX/ETX as user/system defined. (RS)- D1124 - Definition of STX (RS)
