Hi
I have a Multiplus ii GX, and have been using the Modbus TCP function for a few months now without any issues. However a little over a week ago my read requests have been failing and I get a
Illegal Function ERROR. Now I know my unit ids and registers have stayed the same on the request side because I didn't update any code, and the Multiplus was not set to do auto updates. it's on v2.60.
Any ideas on why this would just stop working?
Thanks