Siemens Logo! Manual page 113

When synchronization is enabled, LOGO! can receive the
time-of-day from a communication module EIB/KNX
(version 0AA1 upwards).
Whether synchronization is enabled or disabled, the time-
of-day is always sent to the expansion modules at
power-up, every hour (STOP mode or RUN mode), and
when the TOD is changed after a 'Set Clock' is executed or
after a summertime/wintertime conversion.
LOGO! Manual
A5E00380835-01
Programming LOGO!
105