Wiring and power up
When correctly mounted, the top of the controller contains the COM ports and the bottom of the controller the Ethernet ports.
Figure 5. Power and field communications ports
| 1 | Earth Ground |
| 2 | Power |
| 3 | RS485 ports and bias switches. Refer to “RS485 wiring” and “RS485 bias switches” for details. |
| 4 | Secondary Ethernet port (Sec), 10/100/1000 Mbit, RJ–45 |
| 5 | Primary Ethernet port (Pri), 10/100/1000 Mbit, RJ–45 |