Hi everyone,
I have a problem in communication of CompactRIO 9025 with third party hardware. Let me explain you what my problem is;
I connected my Ethernet cable in between my computer and CompactRIO. I can collect data in this way. There is no problem. But when I connect third party hardware to the RS232 port of CompactRIO, I can not communicate with the hardware.
To find out what happens, I tried to make loopback testing. I shorted RX and TX pins of the RS232 and observed. But when I sent a command which is for example 5-byte, I read 0 byte from the VISA Read function and the program gave me no error.
In MAX, I can not see com ports. Also I can not see com ports on Device Manager menu.
I really do now know what is going on. Any help please?