GE RX3i User Manual page 185

Chapter 9. Modbus/TCP Client
PACSystems Modbus Client Endian Conversion Example
The following example table shows the Endian conversion behavior for the PACSystems Modbus Client:
Memory
Location / Memory value
Type example
%M16-%M1 =
Client Bit
0x4321
%M16-%M1 =
Server Bit
0x4321
Client Word %R1 = 0x4321
Server
%R1 = 0x4321
Word
172 PACSystems* RX7i & RX3i TCP/IP Ethernet Communications User Manual
Memory
Transfer Location /
Direction Type
Server Word

Client Word

Server Bit

Client Bit

Resulting Value After
Transfer
%R1 = 0x4321
%R1 = 0x4321
%M16-%M1 = 0x4321
%M16-%M1 = 0x4321
Notes
End-to-end bytes
un-swapped
End-to-end bytes
un-swapped
End-to-end bytes
un-swapped
End-to-end bytes
un-swapped
GFK-2224Q