| Doc. # 1-0002915 | |||
|---|---|---|---|
| Date Updated | 03-17-2004 | Date Created | 07-27-2000 |
| Document Type | Knowledge Base | Related OS | |
| Related Product | PPC-102 | ||
| Correct PPC102 user's manual page 111 COM2 serial port pin assignment errors | |||
|---|---|---|---|
|
Solution:
After checking the circuit diagram of PPC-102, we find out user's manual exists
a wrong description for pin assignment of RS-232/422/485. The correct pin
assignment is listed as the following:
RS-232 RS-422 RS-485
Pin Signal Signal Signal
1 DCD Tx- Data-
2 RxD Tx+ Data+
3 TxD Rx+
4 DTR Rx-
5 GND GND GND
6 DSR DSR
7 RTS RTS
8 CTS CTS
9 RI RI
|