Hi,
I think the problem comes from my max232 converter. (kit ready to use from china !)
I want use more than one arduino, I ordered a new a Freeduino Serial 2.0.
Do the test that I did on first post.
To test
Connect arduino<->max232<->PC and log with portmon. (setup: HEX)
If you collect exactly the same traces, it's OK !
To synchronise time clock, I use DCF77 module, It's cheaper
If someone have a solution to monitor relay status, I'm interreseted. :
I'll try to connect arduino's input to K8056 status led.
Startx