CoDeSys 2.3.9.11 - Pointers in Visualization Placeholders

2020-02-27T19:23:35.374000Z

If you search the online help term placeholder, you can read some restrictions about the use of placeholder, like :

"Pointer variables : Pointer variables like PLC_PRG.pdw2^ cannot be monitored. This function will be realized with CoDeSys 3.0."

Best regards

CoDeSys 2.3.9.11 - Pointers in Visualization Placeholders

2020-02-27T19:23:34.130000Z

Could you please tell me whether the following is a bug or a known limitation of the Visualization on some targets.

I am creating Visualization placeholders and I am associating fields of a data structure with the displayed data, e.g.:

TYPE EATON_PUMP_TUNEUP_VIS_DATA :
STRUCT
var1 : POINTER TO BOOL;
var2 : POINTER TO WORD;
var3 : POINTER TO REAL;
.....

END_STRUCT
END_TYPE

and using it inside the visualization placeholder like this:

$EATON_PUMP_TUNEUP_VIS_DATA$.var1^
$EATON_PUMP_TUNEUP_VIS_DATA$.var2^
$EATON_PUMP_TUNEUP_VIS_DATA$.var3^

Then, when I use this visualization placeholder I assign an instance of EATON_PUMP_TUNEUP_VIS_DATA to the placeholder.

I need to used POINTER TO BOOL, rather than just BOOL, since I want to allow user input through these Visualization elements and also because the data populating the instance of EATON_PUMP_TUNEUP_VIS_DATA comes from more than 1 source.

This works as I expected in Simulation Mode, but it doesn't work when I download the project to the real target: it only displays "???" and it doesn't accept any input.

Would there be a workaround for this issue?

Thank you

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