Comtrol DeviceMaster EtherNet/IP-Modbus EIP-MOD User Manual page 140

| Write Holding Registers Service (50 Hex)
Parameter Data Type
data SINT array
140 - Chapter 10. PLC Programming for Modbus Object (44 Hex)
Range
Modbus Message to be passed through.
Byte 0: Function Code
Bytes 1-n: Message parameters
Note:
0 to FF hex • PLC operates in little endian format.
• Message request parameters must be byte swapped to big
endian format.
• Message response parameters will be received in big
endian format and may require byte swapping back to PLC
format.
Description
DeviceMaster EIP-MOD User Guide: 2000664 Rev. A