protech ProX-1640, User Manual, Page: 17 / 113

Chapter 2 Hardware Configuration
Page: 2-6
Prox-1640 USER
′
S MANUAL
2-4. COM PORT CONNECTOR
COM1 : COM1 Connector, fixed as RS-232.
The pin assignment is as follows :
PIN ASSIGNMENT
1 NDCD1
2 NRXD1
3 NTXD1
4 NDTR1
5 GND
6 NDSR1
7 NRTS1
8 NCTS1
9
RI1 / +5V / +12V selectable
10 NC
COM2 : COM2 Connector, selectable as RS-232/422/485.
The pin assignment is as follows :
PIN ASSIGNMENT
RS-232 RS-422 RS-485
1 NDCD2 TX- TX-
2 NRXD2 TX+ TX+
3 NTXD2 RX+ RX+
4 NDTR2 RX- RX-
5 GND GND
GND
6 NDSR2 RTS- NC
7 NRTS2 RTS+ NC
8 NCTS2 CTS+ NC
9 RI2/+12/+5V
CTS- NC
10 NC NC NC
All COM port’s pin 9 is selectable for RI, +5V and +12V.
For more information, please refer to our “COM Port RI &
Voltage Selection”.
COM2
6
1
10
5
6
1
10
5
COM1