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PLCHome / node-red-contrib-ads

Beckhoff TwinCat ADS support for Node-Red.
MIT License
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Problem with 2 ADS Connections #46

Closed hbTecAG closed 1 year ago

hbTecAG commented 3 years ago

Hello there

I have a Problem, that if i have 2 ADS connection Nodes active. i think, since V1.1.29, it is no more working. I updated from 1.1.25. I have become often an Error, that Symbols are not found:

Ads write '.GHReg13Soll' Error: symbol not found at getError (/hbvisu-data/node_modules/node-ads-api/lib/ads.js:1800:13) at Object.getWriteReadResult (/hbvisu-data/node_modules/node-ads-api/lib/ads.js:1074:13) at Object.analyseResponse (/hbvisu-data/node_modules/node-ads-api/lib/ads.js:288:28) at Object.checkResponseStream (/hbvisu-data/node_modules/node-ads-api/lib/ads.js:226:25) at Socket.ads.dataCallback (/hbvisu-data/node_modules/node-ads-api/lib/ads.js:155:27) at Socket.emit (events.js:311:20) at Socket.EventEmitter.emit (domain.js:482:12) at addChunk (_stream_readable.js:294:12) at readableAddChunk (_stream_readable.js:275:11) at Socket.Readable.push (_stream_readable.js:209:10)

The Symbol is declared as a Global Variable and works fine. What do I have to look out for if I have two config nodes?

ADS Version: 1.1.29 Node-RED: 1.1.3 Node.js: 12.16.1 Working in a Dockercontainer

I think, it's a problem with the ports in the configuration node..? What can/must i change there? Both PLC's are TwinCAT 2.11.X. I need Node-RED to share some Variables and at the same time, visualize them..

First PLC config: image

Second PLC config: image

Do you have any idea / solution for me? Thanks alot

Edit: If i delete the Second connection (only the config-node) it works fine. Then the Symbol would be found and works..

PLCHome commented 3 years ago

I do not know that. Try the source port on 32906 with one of the two PLC connections.

hbTecAG commented 3 years ago

Hello Unfortunately the same problem. as soon as I delete the config node it works, as soon as I add a second one (also with port 32906) it no longer works.

vdwpsmt commented 3 years ago

Hi, Same issue here. I also have a NR project with 2 PLC connections. with v1.1.29 it is not working. Unfortunately, had no time to look at it in depth, so for now I'm staying on v 1.1.24. As far as it may be usefull, my config is like this: 1st PLC config image 2nd PLC config image

So my NR is running on PLC 1 and needs to make ads connection to a local plc runtime (TC3) and to another one (TC2) in the network.

Sorry I can't be of any more help for now.

hbTecAG commented 3 years ago

@vdwpsmt Have you been able to analyze the problem in more detail in the meantime?

is there any prospect of a bugfix?

vdwpsmt commented 3 years ago

@hbTecAG Sorry, not from my side. I switched over to OPC-UA for the specific project I mentioned (for stability reasons). (Although I still believe the ADS communication is the more lightweight, performant and easy solution).