The connection of a buffer voltage is supported at the X30 connector (bottom side). The following device functions can be buffered when disconnected from power supply:

• FO line:

  Incoming FO telegrams are transmitted, the FO line is not interrupted.

For this purpose, a buffer voltage of typ. 12 V DC (9 V …15 V) is applied at the X30 connector. In case of buffering, the current consumption is approx. 70 mA at 12 V.