7 Application Instructions API 50-99 5.
How to set up RS-485 communication protocol in D1120 DVP-PLC APPLICATION MANUAL 7-111 COM1 COM2 COM3 Function Description Receiving completed - D1050 ~ D1055 - Store the converted HEX data of MODRD instruction Errors M1315 - M1319 Data receiving error D1250 - D1253 Communication error code - M1129 - Receiving time out - M1140 - MODRD/MODWR/MODRW data receiving error - M1141 - MODRD/MODWR/MODRW parameter error (Exception Code exists in received data) Exception Code is stored in D1130 - M1142 - Data receiving error of VFD-A handy instructions (FWD/REV/STOP/RDST/RSTEF) - D1130 - Error code returning from Modbus communication Content 0 1 b0 Data length 7 8 Parity bits 00: None 01: Odd 11:
Even b1 b2 b3 Stop bits 1 bit 2 bits b4 0001 (H1) : 110 0010 (H2) : 150 0011 (H3) : 300 0100 (H4) : 600 0101 (H5) : 1200 0110 (H6) : 2400 0111 (H7) : 4800 1000 (H8) : 9600 1001 (H9) : 19200 1010 (HA) : 38400 1011 (HB) : 57600 (does not support ES/SS V5.8 and below) 1100 (HC) : 115200 (does not support ES/SS V5.8 and below) b5 b6 b7 b8 Start word None D1124 b9 First end word None D1125 b10 Second end word None D1126 b15 ~ b11 Not defined