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M221 with Ecostruxure Machine Expert Basic - Always ON and Always Off Bits.

Issue:

Using EcoStructure Machine Expert Basic to program M221 PLCs in ladder logic, are there Always On and Always Off Memory Bits from the System bits (%S) that could be used?

Product Line:

EcoStructure Machine Expert Basic (all versions)

TM221 controllers

Resolution:

From the Machine Expert Basic help, there are no system bits (%S) listed for Always ON and Always OFF.

EME Basic Help

But in ladder logic it is easy way to program an Always ON and an Always OFF bits using normal memory bits (%M). See screenshot below.

Logic always On or Off.

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