Node-red communication with NOLEK S9 via RS232

General
1

I am trying to read leak test data from a NOLEK S9 unit but i cannot appear to get this setup correctly.
I am using a serial node with the following
Baud rate: 9600
Data bits: 8
Stop bits: 2
Parity: None
Flow: none

Serial port : /dev/ttyS2:9600-8N2 (For COM port 1 on the IOT2040)

Node red v1.2.1 is running on a siemens IOT2040, (I know it is an older version, but the IOT2040 does not want to run anything more up to date)

Any Info on how to request data from the NOLEK unit would be greatly appreciated

2

Welcome to the forum!

Does this show any data?

cat /dev/ttyS2:9600-8N2
3

Thanks for that suggestion, I get a response of No such file or directory?
Does this mean the port is not setup correctly?

4

try

screen /dev/ttyS2:9600-8N2
5

That comes back with Cannot execute, no such file or directory when I execute that query in the Terminal screen.

6

What is the output of:

ls /dev/ttyS2*