Thanks
You are right.I should have cofigured the portb.o as input.

Do you have an idea how can I reduce my consuption?
I have 16f627 internal osc+lcd module+ds1820
When the pic do a mesurment for the ds1820 my current is 4.5mA and when it do not it is 3mA.

Any idea to reduce the curent?
Thanks
Best regards