ABB RES670 Technical Manual page 108

Section 5
Local Human-Machine-Interface LHMI
102
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.
Input value
500ms
Output value
IEC09000332 V2 EN-US
Figure 29: Sequence diagram for setting PULSED
Input function
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.
500ms 500ms
pulse time
1MRK 511 408-UUS A
500ms
pulse time
pulse time
IEC09000332_2_en.vsd
GUID-8EA4AE21-7A74-403A-84AE-D5CEF9292A63 v2
Phasor measurement unit RES670 2.2 ANSI
Technical manual