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PLCHome / node-red-contrib-ads

Beckhoff TwinCat ADS support for Node-Red.
MIT License
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Error ADS: Error: connect ETIMEDOUT #34

Closed tpatora closed 3 years ago

tpatora commented 4 years ago

Hi, thanks for ads package.

My config: Node-RED version: v1.1.3 Node.js version: v14.8.0 [Windows_NT 10.0.18363 x64 LE]

Problem: When the ads network is inaccessible and there is no connection to the other host (TwinCAT 3), an error occurs after starting node-red:

_[error] [ads-connection:29289c71.cd9d64] Error ADS: Error: connect ETIMEDOUT 10.1.12.84:48898 at TCPConnectWrap.afterConnect [as oncomplete] (net.js:1144:16) { errno: -4039, code: 'ETIMEDOUT', syscall: 'connect', address: '10.1.12.84', port: 48898 }

Unfortunately, the system does not respond, all flows stop. After restarting the node-red timeout occurs after several seconds and stops node-red again.

Logging level trace didn`t give me a hint. Node-Red just stoped after error message.

Any idea?

PLCHome commented 4 years ago

I don't understand the issue. If the PLC is not running or if there is no network, the node cannot connect, or what do you want to tell me?

tpatora commented 4 years ago

I'm sorry that I didn't make myself clear enough.

In the case of the most current version, the whole node-red (flow, ui) was suspended in case of connection problem. It looks like in case of wrong connection, node-red hangs completely and only restarting the whole node-red helped. This seems to be a problem for node-red itself, especially for network connections.

In the LTS version, if there is no connection, it tries to reconnect after a few seconds and is ok.

I'd like to take this opportunity to ask about the possibility of saving the whole array and not individual items. Reading the arrays works perfectly, even multidimensional arrays, but I did not find the writing.

Great job with ads! You are great!

wt., 1 wrz 2020 o 14:19 PLCHome notifications@github.com napisał(a):

I don't understand the issue. If the PLC is not running or if there is no network, the node cannot connect, or what do you want to tell me?

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PLCHome commented 3 years ago

connection improved