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2.1 RITY152 connector mapping
2.1.1
External Serial Port 1 connector (COM1)
Quick Reference Guide
In RS-232 Mode
Signal
PIN
DCDA#
1
RXDA
2
TXDA
3
DTRA#
4
GND
5
In RS-422 Mode
Signal
PIN
TxD1-
1
TxD1+
2
RxD1+
3
RxD1-
4
GND
5
In RS-485 Mode
Signal
PIN
DATA1-
1
DATA1+
2
NC
3
NC
4
GND
5
RITY152 Quick Reference Guide 11
PIN
Signal
6
DSRA#
7
RTSA#
8
CTSA#
9
RIA#
PIN
Signal
6
NC
7
NC
8
NC
9
NC
PIN
Signal
6
NC
7
NC
8
NC
9
NC
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