The FC Bus terminal block is a blue, removable, 4-terminal plug that fits into a board-mounted jack.
Wire the removable FC bus terminal block plugs on the controller, and other controllers in a daisy-chain configuration using 3-wire twisted, shielded cable as shown in Figure 1. For more information about the FC Bus terminal function, requirements, and ratings, see Communications bus and power supply terminal block rating and requirements table.
Figure 1. FC bus terminal block wiring
Note: The FC bus Shield (SHLD) terminal is isolated and can be used to connect (daisy chain) the shields for FC bus wiring.