Good morning,
I am trying to communicate from a cRIO 9035 to a cRIO 9030 through Modbus and I keep getting error -1967353902 on the cRIO 9035. I am using the NI 9871 modules on each cRIO. I never get this error on the cRIO 9030, it is only on the cRIO 9035.
I found the following note when troubleshooting Modbus IO Servers: http://zone.ni.com/reference/en-XX/help/370715P-01/lvmve/dsc_modbus_trbsht/
I do sometimes get error -1967353900 which in that link states there is an issue with other devices occupying the serial port.
I ended up creating a new project with just a simple vi to test the comms between the units (attached). When I first started each vi, everything worked fine. But subsequent launches, I get the error codes above.
Here is a list of things I've tried:
-deleting/creating new Modbus IO server
-verifying that opening a VISA terminal in NI Max that the ports are able to communicate
-reformated the cRIO-9035
-created a new project (attached) with simple library
I'm at a loss here as to what else I can try. Does anyone have any suggestions?