netFIELD Compact Gateway Serial RS485 connection for application

[Armin@netPI]

Well Devendra,

I just can tell you right now that this forum will be closing in near future. All upcoming support questions will be handled through Hilschers standard support contact support@hilscher.com nowadays.

I am no longer involved in any support activities. Also I have never tested RS232 and RS485 communications with netFIELD Compact. So I have no knowledge about it as I had before with netPI years before.

All I can say is that the system test executed 2022 has been passed successfully at the time of the product release. So the RS485 interface must have been worked physically. Also I do not see any error in the manual and code description you are referencing.

I also see an example how to start Node-RED successfully with

Code:

docker run -d -p 1880:1880 --device=/dev/ttymxc0:/dev/ttymxc0 --group-add dialout nodered/node-red

So from a user perspective you have done everything well.

For a simple tests without Node-RED you could call in your Linux terminal to print out a simple "hello" to the /dev/ttymxc0

Code:

echo "hello" > /dev/ttymxc0

Of course you need a physical RS485 counterpart device like a RS485 to RS232 converter connected to your PC to see if this "hello" char string is coming out. This is the only check I see right now.

If not you have to contact support@hilscher.com instead.