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Hi, I need to make a null modem cable for the following situation.can anybody please tell me which pins(TD,RD,...) should be connected together for this specific case and how:
-Situation:I want the data which are put on the 9-pin COM port of a PC to be delivered to the 25-pin RS-232C serial port of a controller(device) regularly.No data is necessary to be sent back from the controller to the PC.
-How the cabling will differ if I want data to be sent back to the PC?
-Since the controller can work in both the full duplex mode and the half-duplex mode,and the PC should be in the similar mode,does a PC work in ?
-Situation:I want the data which are put on the 9-pin COM port of a PC to be delivered to the 25-pin RS-232C serial port of a controller(device) regularly.No data is necessary to be sent back from the controller to the PC.
-How the cabling will differ if I want data to be sent back to the PC?
-Since the controller can work in both the full duplex mode and the half-duplex mode,and the PC should be in the similar mode,does a PC work in ?