The Allen-Bradley 1756-RM2 is actually not a Remote I/O module. It’s a ControlLogix Redundancy Module.
- Function: Enables controller redundancy in a ControlLogix system.
- Purpose: Provides fault tolerance by pairing with another 1756-RM2 in a separate ControlLogix chassis. If the primary controller fails, the redundant controller takes over seamlessly with minimal downtime.
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