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LD Language Elements
SR2MAN01 11/2007 115
Latching:
Symbol of the Latching parameter:
This function is used to save the status of the counter's current values in the event
of a power failure.
Illustration: Configuring a counter from the front panel of the smart relay:
Description:
Current Counter
Value
The current value is the value at any given time resulting from the successive up/
down counting actions that have occurred since the last time the counter was reset
to its initial state.
This value is between 0 and 32767. Once these values have been reached, a down
count will leave the value 0 and an upcount will leave the current value at + 32767.
Number Parameter Description
1 Command input Control input timing diagram (following pulse).
2 Reset input Counter reset input timing diagram.
3 Counter output Counter output timing diagram.
4 Parameter lock This parameter is used to lock the counter parameters. When
the block is locked, the preset value no longer appears in the
PARAMETERS menu.
5 Type of counting Up-counting towards the preset value: TO mode or up-
counting from the preset value: FROM mode.
6 Preset value Counter preset value.
7 Latching Backup of state of the current counter value in the event of a
power failure.
Activé Non activé
2
Menu / OK
-+
R C 1
D C T: T O P = 0 0 1 7 5
C C 1
C 1
7
1
2
3
4
6
5