Serial request - node is giving data only once after deploy and giving time out on triggering / interval

I am facing this issue with one of the serial instruments
when I am deploying the flow I am getting the data instantly -> as seen in timestamp node with injecting after 0.1 secs
but after that
whenever I trigger or through the interval it is going from waiting for the state to timeout even when an instrument is giving data.

Recently it is behaving like this any idea or similar issue anyone has reported recently ?

Why not just use the serial in node?

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