3
GB
2. Data transfer principle
2.1 From the PC to the hand programming
unit and vice versa
The switching programs are
transferred to the hand pro-
gramming unit from the PC
via the serial interface or are
written to the PC by the hand
programming unit.
2.2 From the hand programming unit to the time switch and vice versa
The switching programs are transferred to the
relevant time switch from the hand
programming unit via the infrared interface
or are read out from the time switch
by the hand programming unit.
The switching programs are
also transferred from time switch
to time switch in the same way.
hand pro-
gramming unit
PC interface
Time switch
IR interface
hand
programming
unit
