Emerson FM-3 - Manual (Page 255)

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Diagnostics and Troubleshooting
Error: A string variable can only be assigned a quoted text string
The Variable is string. It only accepts types consisting of text strings.
Error: Can only compare(>,<,etc) numeric results
This message occurs in conditional Expressions (i.e. If then). Variables are type identified,
so equation and assignments (x = 9) can be verified. In an expression only numerical values
can be compared for greater than and less than conditions.
Error: Couldn't find named Variable
Could not find the variable.
Error: Couldn't find named Variable from Text
Could not find the variable defined by program text.
Error: Destination Event variables can only be assigned an Event or Boolean
The Variable is an Input event. It only accepts types consisting of Boolean, and events.
Error: Program Instance does not Exist
You attempted the “Call Program.#”, but the program does not exist.
Error: Single value expressions can only be Boolean constants, Events or
Boolean variables
This message occurs in conditional Expressions (i.e. If then). Variables are type identified,
so equation and assignments .(x = 9) can be verified. In an expression you can use single
variables without a comparison, but , then they must be a Boolean constants, Events or
Boolean variable.
Error: String does not represent a predefined name..
The string needs to match one of the defined strings on record in the FM3 Registry data base.
Error: String is not a selection.
The string matches one of the defined strings, but that string is not a selection.