SA0164: Multi-line comments

Function

Determines code positions at which the multi-line comment operator (* *) is used. Only the two single-line comment operators are allowed: // for standard comments, /// for documentation comments.

Reason

Some programming guidelines prohibit multi-line comments in the code, because the beginning and end of a comment could get out of sight and the closing comment bracket could be deleted by mistake.

Importance

Low

PLCopen rule

C5

SA0164: Multi-line comments 1:

You can disable this check with the pragma {analysis ...}, including for comments in the declaration part.

Samples:

(*
This comment leads to error:
"SA0164 …"
*)
PROGRAM MAIN
VAR
    /// Documentation comment not reported by SA0164
    nCounter1: DINT;
    nCounter2: DINT;             // Standard single-line comment not reported by SA0164 
END_VAR
(* This comment leads to error: "SA0164 …" *)
nCounter1 := nCounter1 + 1;
nCounter2 := nCounter2 + 1;