Send and receive binary data via TCP

General
1

Hi all,

I am currenty trying to send a command to a sensor and receive its answer.
This works great with a terminal tool (e.g. IO Ninja)

Send & Receive

grafik
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Same I'd like to achieve with node red:

grafik
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but it does not give any answers on TCP Output node.

Do you have any suggestions?

Thanks
Gerald

2

Try the TCP request node instead of in and out nodes.

Also, if you are not fully up to speed on nodejs buffers, you might get some use from buffer-parser node (it includes a buffer maker node)

3

Dear Steve,

you are right, that solves the issue :smiley:

I wonder whats he difference between these TCP nodes :thinking:

THX
BR
Gerald

4

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