Hi, we have to isolate the I2C-Bus via optocouplers. Because the I2C-lines are bidirectional it's not as easy as I thought. Any ideas how to solve this problem ? Thanx in advance Thomas =8-) ********************************************************** * Thomas Magin FON: ++49-761-4543-489 * * marquette-Hellige GmbH FAX: -507 * * Emergency Systems email: magin@hellige.de * * Munzinger Str. 3 * * D-79111 Freiburg / Germany * **********************************************************