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LD Language Elements
102
SR2MAN01 11/2007
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:
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:
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.
TT-
RT-