Function Code 16: Write Multiple Registers Request 1 Byte 1 to 255 PLC Node Address 1 Byte 0x10 Function Code 2 Bytes 0x0000 to 0xFFFF Starting Address 2 Bytes 1 to 123 Quantity of Registers 1 Byte 2 * N (Quantity of registers) Byte Count N * 2 Bytes Value(s) Outputs Value 2 Bytes Variable CRC Response 1 Byte 1 to 255 PLC Node Address 1 Byte 0x10 Function Code 2 Bytes 0x0000 to 0xFFFF Starting Address 2 Bytes 1 to 123 Quantity of Registers 2 Bytes Variable CRC
Function Code 16: Write Multiple Registers Request PLC Node Address 1 Byte 1 to 255 Function Code 1 Byte 0x10 Starting Address 2 Bytes 0x0000 to 0xFFFF Quantity of Registers 2 Bytes 1 to 123 Byte Count 1 Byte 2 * N (Quantity of registers) Outputs Value N * 2 Bytes Value(s) CRC 2 Bytes Variable Response PLC Node Address 1 Byte 1 to 255 Function Code 1 Byte 0x10 Starting Address 2 Bytes 0x0000 to 0xFFFF Quantity of Registers 2 Bytes 1 to 123 CRC 2 Bytes Variable
PI_ModbusS_4.0.7.61.docx