Appendix A: Specifications
202
RJ-45 Pin/signal definition
5
RS485_DN
bi-directional
Data Negative of the RS-485 bus
6
GND
―
Signal Ground
7
1-wire
―
Used for Feature Port
8
GND
―
Signal Ground
Note: A maximum of 500mA power is permitted for both pin 1 and pin 2 altogether.
Expansion RJ-45 Port Pinouts
RJ-45 Pin/signal definition
Pin No.
Signal
Direction
Description
1
+12V
―
Power (fuse protected)
2
+12V
―
Power (fuse protected)
3
GND
―
Signal Ground
4
RS485_DP
bi-directional
Data Positive of the RS-485 bus
5
RS485_DN
bi-directional
Data Negative of the RS-485 bus
6
GND
―
Signal Ground
7
NC
―
No Connection
8
GND
―
Signal Ground
Feature RJ-45 Port Pinouts
RJ-45 Pin/signal definition
Pin No.
Signal
Direction
Description
1
DTR
Output
Reserved
2
GND
―
Signal Ground