B&R CP340 unit

Hi all,

i have a module from b&r automation and i am want to get the data from it, but the com port is already taken.
Is it possible to monitor the communication on the com port without interupting the signals?


Greatings

Maybe RS232 sniffer cable

https://www.lammertbies.nl/comm/cable/RS-232-spy-monitor.html

You can monitor data only with it.
There is several diagrams of it. Some have two diodes on connection so you see both query and answer.