5 Categories and Use of Basic Application InstructionsDVP-PM Operation Instruction5-88D1071 low 03 H Command code of AC motor driveD1072 low 04 H Number of data (count by byte)D1073 low 17 HD1074 low 70 H Content of address 2102 HD1075 low 00 HD1076 low 00 H Content of address 2103 HD1077 low FE H CRC CHK LowD1078 low 5C H CRC CHK HighProgram Example 3:1. In the communication between DVP-PM and VFD-B series AC motor drive (ASCII Mode, M1143 = OFF),executes Retry when communication time-out, data receiving error or parameter error occurs.2. When X0 = ON, DVP-PM will read the data of address H2100 in device 01(VFD-B) and stores the data in ASCIIformat in D1070 ~ D1085. PLC will automatically convert the data and store them in D1050 ~ D1055.3. M1129 will be ON when communication time-out occurs. The program will trigger M1129 and send request forreading the data again.4. M1140 will be ON when data receiving error occurs. The program will trigger M1140 and send request forreading the data again.5. M1141 will be ON when parameter error occurs. The program will trigger M1141 and send request for readingthe data again.M1002MOV H87 D1120SET M1120RST M1127M1127RST M1129Set communication protocol as 9600, 8, E, 1Retain communication protocolSet communication time-out as 100msMODRD K1 H2100 K 6X0Set communication instruction:Data address:Data length: 6 wordsH2100Device address: 01X0M1129M1140M1141Sending requestRetry when communication time-out occursRetry when data receiving error occursRetry when parameter error occursReceiving completedHandle received dataThe received ASCII data is stored in D1070-D1085and PLC converts the data and store them intoD1050-D1055 automatically.Reset M1127Reset M1129 (receiving timeout)MOV K100 D1129SET M1122M1129Points to note:1. Rising-edge contact (LDP, ANDP, ORP) and falling-edge contact (LDF, ANDF, ORF) can not be used withMODRD instruction, otherwise the data stored in the receiving registers will be incorrect.2. There is no limitation on the times of using this instruction, but only one instruction can be executed at a time.
