Problem to sent message with pyserial and ser.write

[DJ_Depannage]

Hello Everybody,

I need your help to solve a problem.

I need to send command line in MESSAGE BOARD - MML16R Velleman connect by USB/RS232 in Raspberry.


I use Pyserial and this command :

ser.write(message.encode('ascii'))

This is the message :
<ID00><BE>05<E><ID00><L1><PA><FE><MA><WC><FE>Bonjour35<E><ID00><BF>06<E> (it mean Hello)
<ID00><BE>05<E><ID00><L1><PA><FE><MA><WC><FE>Bonjour tout le monde6B<E><ID00><BF>06<E> (it mean Hello everybody)

The first message is sent.
But, the second don't work.

Do you have an idea ?

Thank you very much