Figure 4 - Configuration With Multiple Controllers - Honeywell HC900 Installation And User Manual

Components and Architecture - Components
CAUTION
The HC900-expansion I/O link is a private network and the switch used for the interconnection of
the HC900 Processor and Scanners must not be connected to any other LAN or WAN. Likewise,
no devices other than the HC900 components should be connected to the I/O link Switch. Failure
to comply will cause communication failures on the I/O link causing I/O modules to go in and out
of their failsafe settings.
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Figure 4 – Configuration with Multiple Controllers
HC900 Process Controller Installation and User Guide Revision 19
06/14