Hello,
Thanks for the answer.
I believe there is an issue with this new RS485 transceiver component.
Here I have tried to change this component with one new SN65HVD70D buy on MOUSER.
The signals are now correct and the RS485 modbus modems works well, I did not change any software configuration by the way.
It seems there is a problem with this component, but I don’t know why.