Schneider Electric SR2MAN01 Use of Coils, z Coil TT Command Input, z Coil RC Reset Input

LD Language Elements

Use of Coils	Two coils are associated with each timer:
	z Coil TT: Command Input,
	z Coil RC: Reset Input,
	The use of these coils is described below.
	Command input:
	Symbol of the Command input coil of a timer:
	TT-
	Each type involves a specific operation, which can be used to manage all possible
	scenarios in an application.
	Reset input:
	Symbol of the Command input coil of a timer:
	RT-
	Energization of the coil causes a reset of the current timer value: contact T is
	deactivated and the function is ready for a new timer cycle.
	Note: this coil is only necessary for pulse start/stop type timers.

102 SR2MAN01 11/2007