For some unknown reason, the Modbus driver seems to be failing to read the holding registers. The quality is displayed as “Unknown”. I am able to read the values using modpoll, so I’m leaning towards the issue residing in the modbus driver.
Give support a call in about an hour. This kind of stuff always turns out to be either:
[ul]A legitimate timeout is occurring. Communication timeout needs to be increased.[/ul]
or
[ul]There’s a problem with the way the tags are addressed.[/ul]