CS7X™ Control System Scalability/Distributed I/O

The personality card of the added I/O module communicates with the PCM and becomes an active module with its own address and configuration. The I/O can be expanded to over 2000 in a single installation.

In a hierarchical system composed of a master unit and one or more slave units, CAN is utilized to link the slave units back to the master permitting functional isolation so that slave modules can be dedicated to critical applications. This assures that the control intelligence is distributed in the slave unit or “application modules” where the operation and control decisions need to be made.