Displaying Array Variables in Tables

A frequently required function of a user interface is the display of data arrays. CODESYS Visualization provides the element “Table” for this.

In the configuration of the element “Table”, enter an array variable in the property “Data array”. The array components are displayed in the rows and columns of the table.

Subsequent instructions describe an example of how an array of a structure is displayed in a table. As a preparation, create the ‎MYSTRUCT‎ DUT and the declarations in the ‎PLC_PRG‎ program.

TYPE MYSTRUCT : 
	STRUCT 
		iNo : INT; 
		bOnStock : BOOL; 
		strPartNumber : STRING; 
	END_STRUCT 
END_TYPE 

  
PROGRAM PLC_PRG
VAR
	arrStruct : ARRAY[0..6] OF MYSTRUCT;
	iSelectedColumn : INT;
END_VAR

Drag the “Table” visualization element to the visualization editor.
Assign the array variable ‎arrStruct‎ to the “Data array” property.

The structure members are displayed as column headings and the array index as row headings.
Change the “Columns Column [0] Column header” property to an informative heading (example: ‎Number‎).
Change the heading of column [1] to ‎in stock‎ and column [2] to ‎Part number‎. Adjust the column width.
Assign a color to the “Selection Selection color” property.
Define the “Selection Selection type” property as ‎Row selection‎.
In the “Selection Variable for selected row” property, define the ‎PLC_PRG.iSelectedColumn‎ variable.

The following display results in online mode: