Richard van Bemmelen - 2015-10-22

I'm developing an ioserver with snap7-python.
I use topics (groups of tags at a certain poll frequency), which is
quite common in ioservers to spread the load.
A topic with temperature tags could have a slow update interval compared
to another topic.
Each topic is started in its own thread.
E.g. topic 1 has an update interval of 5 seconds and is reading DB10.
Topic 2 has an update interval of 1 second and is reading DB15 and DB16.
When I have these topics connecting to the same same PLC, I get this error.
Is this normal?

Richard