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Using the 300001.1-365535.16 Data Item in the DSC Modbus server

Hi,

Has anybody used the modbus command for accessing the individual bits of an input register?  The register is a word and if I read it as such the word value does change to reflect the status of the bits.  However when I use the 300257.1 to read the first bit and set it up as a boolean variable type, no change happens.  I suspect it is how I am creating the path to the register.  When I use the browse function in the shared variable setup and I select this data item, single quotes are inserted around the register address e.g.  /localhost/PLC/'300257.1'

 

Any help would be appreciated.

 

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