AN INPUT/OUTPUT (I/O) BUS CONNECTION SYSTEM FOR USE IN A PROCESS CONTROL SYSTEM AND AN ASSOCIATED METHOD

摘要

The input-output bus connection system comprises input-output (I/O) cards each including two interfaces. One of the interfaces of cards is communicatively coupled to process controllers through respective buses. An inter-controller communication link is provided between input-output cards isolated from respective buses, such that other interfaces of the cards are communicatively coupled to the inter-controller communication link. Independent claims are also included for: (1) method of communicating between process controllers within process control system; and (2) process control system.