Solution Overview - Siemens SIMATIC S7-200 Getting Started

Off Delay Timer

4.3 Solution Overview

4.3 Solution Overview
I0.0 activates Q0.0
Q0.0 maintains its state (latches)
since it is also switched
simultaneously in parallel with
I0.0.
When Q0.0 is ON (1) and I0.0 is OFF (0) again (S1 no longer operated), timer T37 starts to
run.
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When T37 has elapsed, the latch function is
broken via this contact.
The motor stops.
If T37 has not elapsed, the latch remains in
effect.
Training Documents, 09/2007, A5E01469795B
Getting Started - Advanced