Siemens SIMATIC S7-200

Pulse Operated Switch
3.5 Bit memory (M addresses)
Getting Started - Advanced
Training Documents, 09/2007, A5E01469795B
27
3.5 Bit memory (M addresses)
You can use bit memories for the pulse-operated switch. A brief example will serve here to
show you how to work with them.
Instead of being used as an output,
the bit memory "M0.0" is used as a
storage location within the PLC for
the interim result of the logic
operation "I0.0 AND I0.1".
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In this network, the bit memory is
used as an "input NO contact" and
so controls output Q0.5. The M0.0 bit
memory address can still be used at
any other location in the program.
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