Problem with continuous high digital output signal from contrib-S7 node

Hi all,

I am using a Siemens Logo for my home automation.
I have connected a dimmer on my Siemens Logo, when I give a pulse, the light goen "on" and with the second pulse the light goes "off". For dimming the lights I have a continuous signal.
I am using "node-red-contrib-s7" including "Dashboard 2.0", so I can send a pulse or continuous signal to the Siemens logo.
Sometimes (once in a mounth) the output goes to "high", so the light is continuous dimming. the only possibility to stop this, is reload the software in the Siemens Logo.
Is there some one who has experience with thid issue?

What output goes high?

Output node-red to input Siemens Logo. When I set the output from Node-red to low, the input to Siemens Logo stay "High"
It happens with different outputs

I don't know that node in detail, does it normally show a 'connected' status? If so does it stay connected?

Are there any messages in the node red log when the problem happens?

Does restarting node-red fix it?

I read normally "Online" near the node
Can I find afterwards a message in a log file?
Restarting Node-Red has no effect, only reload the Logo software.

So the node thinks it is still connected.

That depends on what OS you are running and how you installed node-red.

That makes it almost certain that it is a problem at the Logo end. Can you still control/read other things on the Logo?

I run continue more IO on the Logo together with node-red, this is fourth Logo DI where it happens....