实用文档
串口引脚排列图
RS-232 — DB9孔式
Pin No. Signal 1 DCD 2 TxD 3 RxD 4 DSR 5 GND 6 DTR 7 CTS 8 RTS 9 ---
RS-232 — DB9针式
Pin No. Signal 1 DCD 2 RxD 3 TxD 4 DTR 5 GND 6 DSR 7 RTS 8 CTS 9 ---
RS-232 — DB25孔式
Pin No. Signal 2 RxD 3 TxD 4 CTS 5 RTS 6 DTR 7 GND 8 DCD 20 DSR
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实用文档
RS-232 — DB25针式
Pin No. Signal 2 TxD 3 RxD 4 RTS 5 CTS 6 DSR 7 GND 8 DCD 20 DTR
RS-232 — RJ45(8 pin)
Pin No. Signal 1 DSR 2 RTS 3 GND 4 TxD 5 RxD 6 DCD 7 CTS 8 DTR
RS-232 — RJ45(10-pin)
Pin No. Signal 1 DCD 2 DSR 3 RTS 4 GND 5 TxD 6 RxD 7 GND 8 CTS 9 DTR 10 ----
RS-422 — DB25孔式— for Opt8F/Z
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实用文档
Pin No. 2 3 7 14 16
Signal RxD+(B) TxD+(B) GND RxD-(A) TxD-(A)
RS-422/485 — DB25孔式— for Opt8K
Pin No. RS-422 signal RS-485 signal 2 RxD+(B) Data+ 3 TxD+(B) 7 GND 14 RxD-(A) Data- 16 TxD-(A)
PC 并行接口引脚定义
PC 并行接口外观是 25 针母插座：
引脚定义
Pin Name Dir Description 1 /STROBE 黑 Strobe 2 D0 3 D1 4 D2 5 D3 6 D4 文案大全
棕 Data Bit 0 红 Data Bit 1 橙 Data Bit 2 黄 Data Bit 3 Data Bit 4