Appendix C - Redundancy
Part No.: 4417584_Rev12 Configuration Manual
CIU 888 C - 17
At CIU 888 level, Modbus maps are created with Unique Unit ID which
can be configured in Modbus TCP/IP Client host systems. This way,
each configured map can be accessed in any Modbus TCP/IP ports.
FIGURE C-8 Modbus TCP host port redundancy with redundant CIU 888s and data synchronization
between host systems