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Power Over Ethernet Pinouts
370 
IOLAN SDS/SCS/STS/MDC User’s Guide, Version 4.0
DB9 Male I/O
This section defines the pinouts for the DB9 male connection used on the 1-port IOLAN I/O models.
The following table provides pinout information:
Pinout
 
9-pin
 
EIA-232 
EIA-422/485
 
Full Duplex
EIA-485
 
Half Duplex
1(in)
DCD
2 (in)
RxD 
RxD+
3 (out)
TxD
TxD-
TxD-/RxD-
4 (out)
DTR 
5
GND 
GND
GND
6 (in)
DSR
RxD-
7
RTS
TxD+
TxD+/RxD+
8 (in)
CTS
9
 
Power Over Ethernet Pinouts
This section defines the pinouts for the RJ45 Ethernet connection used on the IOLAN SDS P or 
IOLAN SCS P models.
Pin 1
Pin 8
The following table provides pinout information:
Pinout
Standard
802.3AF Unit-4 Wire
802.3AF Unit-8 Wire
1
Tx+
Tx+/+Voltage
Tx+
2
Tx-
Tx-/+Voltage
Tx-
3
Rx+
Rx+/-Voltage
Rx+
4
N/C
+Voltage
5
N/C
+Voltage
6
Rx-
Rx-/-Voltage
Rx-
7
N/C
-Voltage
8
N/C
-Voltage