Supported Redundant Ciu 888 Topologies Of Deployment; Host Port Redundancy With Redundant Ciu 888S And Host Port Redundancy On Demand Of Host System - Honeywell CIU 888 Configuration Manual

C.11.1 RS-232 host port redundancy with redundant CIU 888s and host port
FIGURE C-6
Part No.: 4417584_Rev12
Appendix C - Redundancy
C.11 Supported redundant CIU 888 topologies of deployment
The following redundant CIU 888 topologies of deployment are
supported:
RS-232 host port redundancy with redundant CIU 888s and host port

redundancy on demand of host system (see C.11.1)
RS-232 host port redundancy with redundant CIU 888s and data

synchronization by host system (see C.11.2)
Modbus TCP host port redundancy with redundant CIU 888s and

data synchronization between host systems
OPC UA TCP host port redundancy with redundant CIUs

redundancy on demand of host system
In this configuration, both CIU 888s in the redundant configuration are
connected to the same host system, for example, Entis Pro (see
FIGURE C-6). The CIU 888s are connected to the host system via one
of their fixed host ports. Each host port has its own unique RTU address
and is configured for communication through Modbus RTU on serial.
RS-232 Host port redundancy with redundant CIU 888s and host port redundancy on
demand of host system
Configuration Manual
CIU 888 C - 14