omron — Modbus-RTU Method

4-4 Communication Function Writes into one coil. The following table shows the coil status change. (Example) Issue the RUN command to the Inverter with slave address 10. To run the Inverter, set "03" in A002. The coil number of the RUN command is "1". 4 Query Response No. Field name Example (HEX) No.

Field name Example (HEX) Functions 1 Slave address *1 0A 1 Slave address 0A 2 Function code 05 2 Function code 05 3 Coil start number (MSB) *2 00 3 Coil start number (MSB) 00 4 Coil start number (LSB) *2 00 4 Coil start number (LSB) 00 5 Change data (MSB) FF 5 Change data (MSB) FF 6 Change data (LSB) 00 6 Change data (LSB) 00 7 CRC-16 (MSB) 8D 7 CRC-16 (MSB) 8D 8 CRC-16 (LSB) 41 8 CRC-16 (LSB) 41 *1. There is no response for broadcasting. *2. Note that the start number is reduced by 1. If writing into the coil cannot be performed normally, refer to the "Exception Response" section. 4-160 Coil status OFF → ON ON → OFF Change data (MSB) FFh 00h Change data (LSB) 00h 00h