Schneider Electric SR2MAN01 Counter Comparators, Description, Use as a Contact, Configuration

LD Language Elements

Counter Comparators

Description	This function is used to compare the current counting values of two counters or of a
	counter and a constant value.
		Note: The Counter Comparators function block can only be configured from the
		programming software in Ladder Entry mode.
		See on-line help of the programming software for more information.
Use as a Contact
	The counter comparator indicates whether the chosen condition is verified. It is used
	as a contact, in normally open mode or in normally closed mode.
	Normally open mode:
	Symbol of the counter comparator, in normally open mode:
		V1
	The contact is conducting when the condition is verified.
	Normally closed mode:
	Symbol of the counter comparator, in normally closed mode:
		v1
	The contact is conducting when the condition is not verified.
Configuration	The Counter Comparators function block cannot be configured from the front panel
from the Front	of the smart relay. This function must be configured from the programming software.
Panel	See on-line help of the programming software for more information on configuration.
Modifying the
	To modify the operating mode of a coil or a contact from the front panel of the smart
Mode of a Coil or	relay (the programming window displayed on screen), simply:
a Contact	z Position the cursor on the symbol representing the coil mode or on the letter of the contact,
	z Proceed as described in the paragraph Modifying an element,, p. 44, to scroll
		through the possible modes for a coil or possible contact types (V for normally
		open contact, v for a normally closed contact).
Initialization
	Status of contacts on program initialization:
	z Normally open mode (direct state) is inactive,
	z Normally closed mode (reverse state) is active.

128 SR2MAN01 11/2007