Schneider Electric SR2MAN01 user manual Coil TK1 Enable function input

LD Language Elements

Use of Coils	Two coils are associated with the fast counter:
	z coil TK1: Enable function input,
	z coil RK1: Reset initial counter state input.
	The use of these coils is described below.
	Enable function input:
	Symbol of the Enable Function Input coil of the fast counter:
		TK1
	This element is used to confirm the counter. When this coil is active, each pulse on
	the I1 input will increment the Fast counter and each pulse on the I2 input will
	decrement it.
	Reset initial counter state input:
	Symbol of the Reset Initial Counter State Input:
		RK1
	This input resets the counter function to its initial state.
	Energizing the coil has the following effect:
	z reset the current count value to zero if the count type is TO (up-counting from
		the preset value).
	z reset the current value to the preset value if the count type is FROM (down-
		counting from the preset value).
	Example: Counter reset by pressing on the Z1 key:
		Z1	RK1

Each time the Z1 key is pressed, the counter is reinitialized.

SR2MAN01 11/2007 119