Causes of interlocked push button runtime errors

At runtime the application logs errors about the interlocked push button to FactoryTalk Diagnostics under these circumstances:
Invalid values
  • If the button value is too large for the data type of the tag assigned to the Value connection, or if the value is outside the assigned tag’s minimum and maximum values, the application does not write the value to the Value tag, the state does not change, and the application logs an error.
    For example, the button value is too large for the tag’s data type if the data source is a PLC-5, the state value is 2,147,483,647, and the assigned tag is an integer tag using the address N7:0.
  • The digital tag works like a Boolean in that any non-zero value is treated as 1.
Unassigned connections
  • If the Value connection is not assigned, the application sets the button to State 0 and logs an error.
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