Product Description:
The USI-0002 communication module handles Ethernet and Serial
communication with external devices, e.g. Experion™ PKS and Safety Builder. It
is located in the Controller chassis.The Controller chassis CPCHAS-0002 contains all Control Processor modules.
Table 16 on page 118 shows the location of the Control Processor modules in a
redundant Controller (as seen from the front of the cabinet). As you can see, all
Control Processor modules are doubled in a redundant Controller configuration,
with the exception of the Battery and Key switch module, which is shared by both
Control Processors.
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