Using CSV format, each variable is defined on one line of text. Each component of the variable definition is entered as one CSV element. CSV elements are separated by semi-colons. Each element is written between double quotes. A double quote within an element is represented by two double quotes. CSV format is an easy way to exchange variable declaration with Spreadsheet applications.
It is not mandatory that all elements (all columns) appear in the text. The first line must contain the list of columns used, using the following keywords:
| name | variable
symbol this item is mandatory |
| type | name of
the data type this item is mandatory, and must appear before len, dim and init columns |
| len |
string length if the data
type is STRING |
| dim | dimensions
in case of an array there are at most 3 dimensions, separated by comas |
| attr | attribute
of the variable, can be: IN : input parameter of a UDFB OUT : output parameter of a UDFB external : extern variable |
| RO | if
"YES" indicates that the variable has the read-only
attribute (note: you can also use "TRUE" or "1" value) |
| init | initial
value of the variable must be a valid constant expression that fits the data type |
| tag | tag (short description text) |
| desc | description text |
| profile | name of the embedded profile |
| embed | embedded properties (same syntax as displayed in the variable editor grid) |
Below is an example of CSV text for the declaration of 3 variables, with some columns missing:
"name","type","len","attr","RO"
"MyVar","BOOL","","","NO"
"ExtVar","DINT","","external","YES"
"MyStr","STRING","10","","NO"