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Programming wiring
MN05013005E
224
Function of the GET function block
Figure 115: Signal diagram of GET function block
1: GT..Q1
2: value on GT..QV>
Seven-day time switch
EZD is equipped with a real-time clock which you can use in
the circuit diagram as a 7-day time switch and a year time
switch.
EZD provides 32 seven-day time switches HW01 to HW32 for
a total of 128 switching times.
Each time switch has four channels which you can use to set
four on and off times. The channels are set via the parameter
display.
The time is backed up in the event of a power failure and
continues to run, although the time switch relays will no longer
switch. The contacts are kept open when de-energized. Refer
to Chapter “Technical data”, Page 407 for information on the
buffer time.
Wiring of a 7-day time switch
A 7-day time switch is integrated into the circuit diagram as a
contact.
1
2
J
The GET function blocks are assigned the value 0 when the
power supply is switched on.
J
The procedure for setting the time is described under
