Quick Reference Guide
RITY150 Quick Reference Guide 11
2.1 RITY150 connector mapping
2.1.1
External Serial Port 1 connector (COM1)
In RS-232 Mode
Signal
PIN PIN
Signal
DCDA#
1
6
DSRA#
RXDA
2
7
RTSA#
TXDA
3
8
CTSA#
DTRA#
4
9
RIA#
GND
5
In RS-422 Mode
Signal
PIN PIN
Signal
TxD1-
1
6
NC
TxD1+
2
7
NC
RxD1+
3
8
NC
RxD1-
4
9
NC
GND
5
In RS-485 Mode
Signal
PIN PIN
Signal
DATA1-
1
6
NC
DATA1+
2
7
NC
NC
3
8
NC
NC
4
9
NC
GND
5
