Christofer Dutz

Capture of the rest only testing multi item writes. [s7-driver-multi-item-write-error.pcapng.zip](https://github.com/apache/plc4x/files/14960269/s7-driver-multi-item-write-error.pcapng.zip)

Investigating into this issue shows that it's probably a problem related to the optimzizer building too large PDUs

If I do a search for "S7HMuxImpl.IS_CONNECTED" I get only reading results ("channel.attr(S7HMuxImpl.IS_CONNECTED).get()" and not a single set ... so I would assume that's the reason, why "isConnected" always returns...

I just double-checked and my last assumption is actually not true ... it's not always returning false.

Search for "DOOM"... It's a decorator for log statements, I think

I commented out the DOOM LoggingHandler ... so that should vanish from the logs.

Yeah ... have tested it with my S7-1200 models as well as my S7-1500 and I also couldn't see any issues.

I think while investigating another problem I stumbled over what's causing the "must produce at least one message" error message. And it turns out I just didn't see the error...

Thanks for confirming ... would it be ok for us to close this issue then?

I actually can't confirm this behavior on the current SNAPSHOT version, can it be closed?