Protech Systems PROX-1750 User Manual page 20

Chapter 2 Hardware Configuration
COM3 : COM3 Connector
The COM3 Connector assignments are as follows :
PIN
1
2
3
4
5
6
7
8
9
10
COM4 : COM4 Connector
The COM4 Connector assignments are as follows :
PIN
1
2
3
4
5
6
7
8
9
10
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ASSIGNMENT
NDCD3
RXD3
TXD3
NDTR3
GND
NDSR3
NRTS3
NCTS3
NRI3
NC
ASSIGNMENT
NDCD4
RXD4
TXD4
NDTR4
GND
NDSR4
NRTS4
NCTS4
NRI4
NC
6
1
COM3
6
1
COM4
Prox-1750 USER'S MANUAL
10
5
10
5