I want to use the onboard RS485 on the crio9045 but without success.
I connected the TXD+ pin with the RXD+ pin and the TXD- pin with the RXD- pin as descript in the loopback test (http://www.ni.com/tutorial/3450/en/)
In the MAX I try to sent the *IDN?\n command. As a response it get a timeout.
As second option I have an USB-485 NI. But the crio is only detecting an unknown usb device.
Is there some software / driver that I need to install to let it work?