Handwheel and Serial Connection

In Radonix PC-Pro series control boards—except for the Pro LAN 3AS model—a 9-pin connector is used for both Handwheel and RS485 connections. To connect a handwheel, a 5V encoder with differential outputs is compatible with the Radonix control board.

Additionally, RS485 is a type of serial communication where data is transmitted via the A.485 and B.485 pins (Figure 25).

The internal circuit diagram of the RS485 connection pins in PC-Pro series models is shown in Figure 26.

The internal circuit diagram of the handwheel connection pins in PC-Pro series models is shown in Figure 27.

Figure 28 illustrates the equivalent internal circuit diagram of the control board for handwheel connection.

Figure 29 shows how the handwheel connects to the control board in differential and open-collector modes. If the handwheel encoder is of the open-collector type, then the HW.A+ and HW.B+ pins must be connected to the +5V pin on the 9-pin connector. The other handwheel switches should be connected to digital input pins.

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Note: Analog inputs are only available on PC-Smart model control boards.