Figure 1.
Communications ports on the FX90 Supervisory Controller

|
Callout |
Description |
|---|---|
| 1 | Ground |
| 2 | 24 V power input |
| 3 | RS-485 ports and bias switches |
| 4 | Ethernet port, 10/100/1000-Mbit, RJ-45: Pri |
| 5 | Ethernet port, 10/100/1000-Mbit, RJ-45: Sec |