Programming
2.3 Variables
Expanding the user interface
Commissioning Manual, 11/2006, 6FC5397-0DP10-0BA0
2-39
2.3.17 ERR variable
Description
Variable ERR can be used to check whether the preceding lines have been executed
correctly.
Programming
Syntax: ERR
Description: The ERR variable is read-only.
Return Value: The result of the scan can be:
FALSE = previous line was executed error-free
TRUE = previous line was not executed error-free
Example
VAR4 = Thread[VAR1,"CDM",3] ; Output value from array
IF ERR == TRUE ; Scan to check whether value has been found
in array
VAR5 = "Error accessing array"
; If the value has not been found in the
array, the value "Error accessing array" is
assigned to the variables.
ELSE
VAR5 = "All OK" ; ;If the value has been found in the array,
the value "All OK" is assigned to the
variables.
ENDIF
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