9 Application Instructions API 150-199 Registers (D0) for PLC received data (responding messages): Program example 6: COM1(RS-232) / COM3(RS-485), Function Code H05 1. Function Code K5 (H05): Force ON/OFF bit device. 2. PLC1 connects PLC2: (M1320 = OFF, ASCII Mode ), (M1320 = ON, RTU Mode ) 3. n = 1 indicates Force ON (set FF00H) and n = 0 indicates Force OFF (set 0000H) 4. PLC COM1/COM3 will not process the received data. 5. Take the connection between PLC1 (PLC COM3) and PLC2(PLC COM1) for example, the tables below If PLC1 applies COM1 for communication, the below program can be usable by changing: explains the status when PLC1 reads Y0~Y17 of PLC2 1. D1109 → D1036:
communication protocol 2. M1136 → M1138: retain communication setting 3. D1252 → D1249: Set value for data receiving timeout 4. M1320 → M1139: ASCII/RTU mode selection 5. M1316 → M1312: sending request 6. M1318 → M1314: receiving completed flag DVP-PLC Application Manual 9-16 Register DATA Explanation D1260 low 00 H Set bit On/Off Request bit ON/OFF D1261 low 00 H D1262 low CD H CRC CHK Low D1263 low 06 H CRC CHK High Register DATA Explanation D1070 low 01 H Address D1071 low 05 H Function D1072 low 05 H Starting data address D1073 low 00 H D1074 low 00 H Set bit On/Off Request bit ON/OFF D1075 low 00 H D1076 low CD H CRC CHK Low D1077 low 06 H CRC CHK High