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Search FAQs

How do you address a Modbus Coil boolean tag in a EcoStruxure Machine Expert controller?

Issue
How do you declare a symbol in EcoStruxure Machine Expert or SoMchine in a PLC with a Modbus Coil boolean 0x or %M address?

Product Line
Modicon M238, LMC058, M258, M241, M251, M262, PacDrive 3, EcoStruxure Machine Expert, SoMachine

Environment
PLC Configuration software in Windows 10

Resolution
There are no Modbus Coil (0x notation or %M) boolean address space in SoMachine / EcoStruxure Machine Expert PLCs
You will need to address a bit location of the memory byte.

The declaration should appear as follows:
VAR
    Variablename AT %MX0.0: BOOL;
END_VAR
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