Input value
Output value
IEC09000330-2-en.vsd
IEC09000330 V2 EN-US
Figure 29: Sequence diagram for setting OFF
Setting
TOGGLE
In this mode the output toggles each time the function key has been pressed for more than
500ms. Note that the input attribute is reset each time the function block executes. The function
block execution is marked with a dotted line below.
Input value
Output value
IEC09000331_1_en.vsd
500ms 500ms 500ms
IEC09000331 V2 EN-US
Figure 30: Sequence diagram for setting TOGGLE
Setting
PULSED
In this mode the output sets high (1) when the function key has been pressed for more than
500ms and remains high according to set pulse time. After this time the output will go back to 0.
The input attribute is reset when the function block detects it being high and there is no output
pulse.
Note that the third positive edge on the input attribute does not cause a pulse, since the edge was
applied during pulse output. A new pulse can only begin when the output is zero; else the trigger
edge is lost.
500ms 500ms 500ms
pulse time pulse time
pulse time
500ms
IEC09000332_2_en.vsd
Input value
Output value
IEC09000332 V2 EN-US
Figure 31: Sequence diagram for setting PULSED
1MRK 502 066-UUS B Section 5
Local Human-Machine-Interface LHMI
103
Technical manual
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