Structured text seems to delight in making the simple really difficult (much more used to C). Could somebody please rearrange this so it will compile.
VAR_GLOBAL ErrorStg : Array[0 .. 10] of STRING[16] := "Good","Bad","Fsked"; END_VAR
2 Answers
Did you read the compiler error at all...?
The working version at least on CODESYS 3 based platforms:
ErrorStg : ARRAY[0 .. 10] OF STRING[16] := ['Good','Bad','Fsked'];
The working version at least on CODESYS 2 based platforms:
ErrorStg : ARRAY[0 .. 10] OF STRING[16] := 'Good', 'Bad', 'Fsked';
You should use ' instead of " with regular strings.
2 Comments
Lonesome Twin
Thanks. I should have mentioned the version , which is Schneider EcoStruxure, tho I believe its roots are in Elliwell. No, this doesn't work for me, giving an "Invalid init value". I'm not a StackOverflow regular, so the formatting is escaping me.
Quirzo
Does the system have a help? Usually the PLC systems have quite nice help documentation. One solution is to try
:= 'Good', 'Bad', 'Fsked'; which is valid for CODESYS 2 based systems (so no brackets).When you initialize an array on the definition line, you have to give all of the values (all 11 in your case).
As an alternative, I would suggest a much easier solution - use an init routine to assign the values. If you are opposed to “burning boot time”, you can still solve by defining a FB called InitGlobals and then define a FB_INIT method and put your assignments there. FB_INIT executes as soon as the object exists and not when your program runs. Add an instance of InitGlobals to your code, of course.
1 Comment
Quirzo
Actually at least CODESYS 2 & 3 based systems don't need all values. You can initialize array with just few values.