The modbus terminal block is a green, removable, 3-terminal plug that fits into a board-mounted jack.
Wire the removable modbus terminal block plugs on the controller, and wire the other field controllers in a daisy-chain configuration using 3-wire twisted, shielded cable as shown in Figure 1. See Table 1 for more information on functions, ratings, requirements and cables.
The modbus port communicates as a master modbus device and connects to the modbus network, which may consist of one-to-many modbus devices. Each modbus device has a unique modbus register table and you must configure it within the application of the Verasys Controller.
Figure 1. Modbus Terminal Block
