Hi, I have been accessing a ESP301 motion controller from cRIO-9040 via RS232 serial port successfully. At one instant, when the serial read write operation was in progress (in LABVIEW interface) , the crio lost connection. The 'lost connection' issue is fixed now by changing the com port. But the serial port does not work anymore. The read buffer is not returning any bytes. I also tried to access it via NI MAX. But I get the following error
"VISA: (Hex 0xBFFF00A7) The remote machine does not exist or is not accepting any connections. If the NI-VISA server is installed and running on the remote machine, it might have an incompatible version or might be listening on a different port."
The RS232 interface is still working on my PC. It is not working only with the cRIO. Could someone please help?