LD Language Elements

Latching:

Symbol of the Latching parameter:

Activé

Non activé

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:

7

1

C C 1

 

 

 

2

R C 1

 

 

 

3

C 1

 

 

 

4

D C

T: T O

P = 0 0 1 7 5

 

 

-

 

+

 

 

 

 

Menu / OK

 

 

5

 

6

Description:

 

 

 

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.

 

 

 

 

 

 

 

 

 

 

5Type of counting Up-counting towards the preset value: TO mode or up- counting from the preset value: FROM mode.

6Preset value Counter preset value.

7

Latching

Backup of state of the current counter value in the event of a

 

 

power failure.

Current Counter The current value is the value at any given time resulting from the successive up/

Valuedown 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.

SR2MAN01 11/2007

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Image 102
Schneider Electric SR2MAN01 user manual Number Parameter Description Command input, Counter reset input timing diagram