Siemens SIMATIC S7-200

Sequencer
5.4 Transition condition
Getting Started - Advanced
46 Training Documents, 09/2007, A5E01469795B
5.4 Transition condition
What is a transition condition?
● Each step is started (activated) by a condition. The condition is usually derived from the
states of the machine. These can include actuated limit switches, operator keys,
temperatures reached or timers.
● An active preceding step is almost always part of the condition.
● If a new step flag is set, the step flag of the preceding step is reset.
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