X-NUCLEO-PLM01A1 + STEVAL-XPLM01CPL not working

[ABasi.2]

Hello

i have a pair of X-NUCLEO-PLM01A1  plugged on two NUCLEO-G071RB that communicate in P2P mode, one is master board and one is slave board

i have adapted the example provided by ST to work on this boards:

 https://www.st.com/en/embedded-software/x-cube-plm1.html

The communications  using a 2 wire to connect the CN1 on the  X-NUCLEO-PLM01A1 is completely functional

BUT

if i try to connect the two board using two STEVAL-XPLM01CPL is not working anymore

i connect the two high voltage side on the 230VAC 50Hz same socket and the two low voltage side to the respective X-NUCLEO-PLM01A1

there is some modification to do on the example or should be work?

anyone have the same issue ?

[ABasi.2 · Accepted solution]

hello, sorry for the delay but i made some test.

surprisingly now work in every setup!

i think there was a bad connection that now is fixed.. its the only explanetion i have

i will make some test also at home to test  that setup but today in the building is working perfectly. 

i will share with you the oscilloscope image of the now working setup:

thank you for your help!