I am using a the 7072 to communicate between a device utilizing Modbus RTU and a HMI running Ignition. The issue I have is getting the reading input registers commands to return data from device. In Node Monitor the input registers I am querying return zeros. I am able to use the Node Monitor and send a read input register command. I receive back the correct data from the device.
What is the difference between the Node Monitor and the subnetwork configuration read input registers command? There must be a setting that I am missing or setting incorrectly in the AB.
Thank you for your help.