I have a data collector device which has a RS-232 male port, and the PC which sends data to that device has also a COM (RS-232) male port.
For wiring I have a RS-232 cable (male to female) and a gender changer.
PC---gender changer------RS-232 cable---------data collector device
But it seems not work; the device is not receiving data. I assume that I may need a null modem cable. How can I solve this problem even without having a null modem cable? is there a software can change the wiring/pin assignment from PC side?