Athena A228 User Manual page 30

APPENDIX
COM1 & COM2 Connector
Pin #
1 Carrier Detect
2 Receive Data
3 Transmit Data
4 Data Terminal
Ready
5 Ground
6 Data Set Ready
7 Request to Send
8 Clear to Send
9 Ring Indicator
30
RS-232
A228/A248/A228I/A248I User's manual
Signal Description
RS-422
Transmit Data -
Transmit Data +
Receive Data +
Receive Data -
NC
NC
NC
NC
NC
RS-485
Transmit Data -
Transmit Data +
NC
NC
NC
NC
NC
NC
NC