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Interface operating manual
Appendix I. Pin assignment
RS 232 pin # direction IBM AT
2
3
5
6
8
→
←
↔
→
→
RxD
TxD
Gnd
DSR
CTS
6
1
9
5
RS232
RS 422 pin # direction ax422 convert
2 Tx3 Tx+
4 Rx5 Rx+
→
→
←
←
RxRx+
TxTx+
23 45
RS422
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