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 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 Pin No. Signal 2 RxD+(B) 3 TxD+(B) 7 GND 14 RxD-(A) 16 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 Strobe 2 D0 Data Bit 0 3 D1 Data Bit 1 4 D2 Data Bit 2 5 D3 Data Bit 3 6 D4 Data Bit 4 7 D5 Data Bit 5 8 D6 Data Bit 6 9 D7 Data Bit 7 10 /ACK Acknowledge 11 BUSY Busy 12 PE Paper End 13 SEL Select 14 /AUTOFD Autofeed 15 /ERROR Error 16 /INIT Initialize 17 /SELIN Select In 18 GND Signal Ground 19 GND Signal Ground 20 GND Signal Ground 21 GND Signal Ground 22 GND Signal Ground 23 GND Signal Ground 24 GND Signal Ground 25 GND Signal Ground ECP 并行口定义 ECP 是 Extended Capabilities Port 的缩写，外观同并行口，是 25 针母插座： 引脚定义 Pin Name Dir Description 1 nStrobe Strobe 2 data0 Address, Data or RLE Data Bit 0 3 data1 Address, Data or RLE Data Bit 1 4 data2 Address, Data or RLE Data Bit 2 5 data3 Address, Data or RLE Data Bit 3 6 data4 Address, Data or RLE Data Bit...
