The SA Bus terminal block is a brown, removable, 4-terminal plug that fits into a board-mounted jack.
Wire the removable SA Bus terminal block plugs on the controller, and other SA bus devices in a daisy-chain configuration using 4-wire twisted, shielded cable as shown in Figure 1.
Figure 1. SA bus terminal block wiring
Note: The SA PWR terminal supplies 15 VDC. The SA PWR terminal can be used to connect (daisy chain) the 15 VDC power leads on the SA bus.