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PLCHome / node-red-contrib-ads

Beckhoff TwinCat ADS support for Node-Red.
MIT License
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Notification question #11

Closed martinschki closed 5 years ago

martinschki commented 5 years ago

Sorry for posting a question here: You state that Beckhoff says there should be no more than about 500 notifications registered on a plc.

If I create multiple notifications with the same variable on the same or different flows, will those count as one notification on the Beckhoff side? In other words, if I need the status of one variable on multiple flows how many times does that count for towards that 500 notification limit?

PLCHome commented 5 years ago

No that does not count in the 500 notification limit, since no registration takes place on the SPS. If you register Nodes with different attitudes, always the first Node registered on the SPS. But it would be better to use a link in and link out node.

PLCHome commented 5 years ago

measures, I've just seen the code. i think it does not work with multiple notification. Each node is registered individually in the PLC, I had changed that once. I have to look, that can be changed.