V4007¶

Code: V4007
Message: Array subscript outside the range of DINT

The program accessed an array element with a subscript whose value is outside the range of DINT. A subscript is a DINT, so a subscript of a wider type, such as LINT, UDINT, ULINT, DWORD or LWORD, names no element when its value does not fit one. The program stops rather than selecting the element that the low bits of the value would name.

Example¶

The following code will generate error V4007:

Try it

Source

PROGRAM Main
VAR
    values : ARRAY[-3..5] OF INT;
    i : UDINT := 4294967295;
    result : INT;
END_VAR
result := values[i];  (* Error: 4294967295 is outside the range of DINT *)
END_PROGRAM

The subscript 4294967295 is not a DINT value. Read as a DINT, its bits would be -1, an element of values, so the program stops instead. A subscript that is a DINT value but outside the bounds of the array is reported as V4005.

To fix this error, ensure the subscript is within the bounds of the array before the access:

Try it

Source

PROGRAM Main
VAR
    values : ARRAY[-3..5] OF INT;
    i : UDINT := 4294967295;
    result : INT;
END_VAR
IF i <= 5 THEN
    result := values[i];
END_IF;
END_PROGRAM

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