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 ?

[Didier HERROUIN]

Hello,

No, there is no HW/FW modification to apply.

What is your operating frequency ? To ensure that you communicate in Cenelec B or C band, for which the coupling filter was designed.

For the connection, you can refer to User Manual UM2188 : the DC voltage to supply the X-NUCLEO-PLM01A1 boards should be connected to CN2 connectors, and each STEVAL-XPLM01CPL should be connected to CN1 connectors (and AC connected to STEVAL-XPLM01CPL J1 connectors).
If you still face issues, let me know if you can measure PLC signals on secondary side (on CN1).

Best regards,

Didier