LabVIEW
Mini8 and Modbus Error
Hello,
I have a Eurotherm Mini Modbus TCP controller. I have been using the LabVIEW Modbus Master (Plasmionique). By and large, I can communicate with the controller. I am able to read PV as well as read and write SPs, etc.
I am able to take the controller in and out of configuration mode. Sometimes, though, when I want to read a register after taking it out of configuration mode, I get the error below (which I believe is a "Slave Device Failure").
Even though this error occurs, I know that the controller is running because I can see that it is outputting (relay is switching). If I run the code again with the controller running, no error occurs. I have tried adding delays (up to 10 seconds), and it does not appear to help.
Has anyone else had this issue? Am I using the wrong commands? Any help is greatly appreciated.
Thanks
