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How to command an EM from button in DeltaV Live

  1. I'm struggling to create a new button in DV Live which functions to command multiple EMs to Idle. I'm using WriteAsync function as below. The A_COMMAND.CV parameter is a named set value. The Idle command has named set value of 1. The script verifies without errors but when I test it, the command is not written. I'm sure it's something to do with a type/field mismatch but I've tried so many combinations and can't get it to work.

DLSYS.WriteAsync("EM_Name/A_COMMAND.CV",1)

AutoEngineer1

1 Reply

  • AutoEngineer1
    Solved it finally. Writing string to string works so:
    DLSYS.WriteAsync("EM_Name/A_COMMAND.CV.STR", 'Idle')
    The single rather than double quotation tripped me up.

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