Schneider Electric SR2MAN01 user manual Initialization R Counting

LD Language Elements

Timing Diagrams In the timing diagrams the blue curves represent the current value of the counter:

The following figure shows the operation of the counter in up-counting mode with toward the preset value: TO mode:

Initialization: R

Counting

direction: D

Current counter	High saturation
		+32767
value	Low
Preset value	saturation

0

Output: C

The following figure shows the operation of the counter in upcounting mode from the preset value: FROM mode:

Initialization: R

Counting direction: D

Current counter value

Preset value

High saturation

+32767

Modifying the Mode of a Coil or a Contact

0
Output: C	Low saturation

To modify the operating mode of a coil or a contact from the front panel of the smart relay (the programming window displayed on screen), simply:

zPosition the cursor on the symbol representing the coil mode or on the letter of the contact,

zproceed as indicated in the paragraph Modifying an element,, p. 44, to scroll through the possible modes for a coil or contact types possible (C for normally open contact, c for a normally closed contact).

116 SR2MAN01 11/2007