Advantages Of Working With Sequencers - Siemens SIMATIC S7-200 Getting Started

5.9

Advantages of working with sequencers

Separate sections for the step sequence control and the output control
If an output is now to be active in step 7 in addition to step 2 and 3, the program only needs
to be modified at one point.
Modifications to the control section of the sequencer do not affect the setting of the outputs.
Easy-to-test program
The program is easy to test:
● Each step can be traced easily on the programming device.
● If transitions do not function, it is easy to detect which condition is missing.
Detecting missing transition conditions for machines
If a machine ceases to operate, it is easy to detect the missing transition condition from the
mechanical position of the machine and the active step flag.
Fewer programming errors and faster start-up
Using sequencers forces you to structure your programs which in turn minimizes
programming errors.
Getting Started - Advanced
Training Documents, 09/2007, A5E01469795B
5.9 Advantages of working with sequencers
Sequencer
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