Input value
Output value
IEC09000331_1_en.vsd
500ms 500ms 500ms
IEC09000331 V2 EN-US
Figure 28: 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 29: Sequence diagram for setting PULSED
Input function
GUID-8EA4AE21-7A74-403A-84AE-D5CEF9292A63 v2
All function keys work the same way: When the LHMI is configured so that a
certain function button is of type CONTROL, then the corresponding input on this
function block becomes active, and will light the yellow function button LED when
high. This functionality is active even if the function block operation setting is set
to off. It has been implemented this way for safety reasons; the idea is that the
function key LEDs should always reflect the actual status of any primary
equipment monitored by these LEDs.
Section 5 1MRK 506 382-UEN A
Local Human-Machine-Interface LHMI
86 Line distance protection REL650 2.2 IEC
Technical manual
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