发表于：2005/1/21 22:36:00
#0楼
[QUOTE][center][QUOTE]我有一日立H28R PLC 现在想用计算机与之进行数据传输,不知如何制作通讯电缆,求教各位大仙指点:
计算机串口为9针
PLC端为15针, 且针脚定义如下:
1: NC unused
2: SD date sent from COMM module
3: RD date sent to COMM module
4: RS at high level when COMM module is ready to receive data
5: CS must be high when COMM module transmits data
6: RV1(ER) data terminal ready
7: RV2(DR) data set ready
8: PHL do not connect
9,10: SG signal ground
11,12:
13:
14:
计算机串口为9针
PLC端为15针, 且针脚定义如下:
1: NC unused
2: SD date sent from COMM module
3: RD date sent to COMM module
4: RS at high level when COMM module is ready to receive data
5: CS must be high when COMM module transmits data
6: RV1(ER) data terminal ready
7: RV2(DR) data set ready
8: PHL do not connect
9,10: SG signal ground
11,12:
13:
14:
[此贴子已经被作者于2005-1-24 13:55:43编辑过]
