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61 Appendix B
B.8 COM1
B.9 COM2
Pin Signal
1DCD
2RxD
3TxD
4DTR
5GND
6DSR
7RTS
8CTS
9RI
Pin Signal
RS-232 RS-422 RS-485
1 DCD TX- DATA-
2RXTX+DATA+
3TXRX+---
4DTRRX----
5GNDGND---
6DSR------
7RTS------
8CTS------
9RI------
15
9
6
324
78
15
9
6
324
78