Or, which is I think where you started, put values in the Data Block. The advantage of the Data Block is that all values are in one place, and so, easy to find. From the main screen click on Data Block or View/Component/Data Block, define a value such as:
VW100 320
// Integer - Information to remind you what VW100 does
VD102 400.567
// Float/Real - Information to remind you what VD102 does. Float values must have a decimal point, even if it is followed by 0.
You might be able to put the comment on the same line as the variable but I can't remember. Text after the // is treated as comment. If the supercapacitor is exhausted then the PLC will load the values from the Data Block. If you need to modify values you can make the changes then just download the Data Block. The disadvantage is that you will intialise all other variables to zero.
Bryan
Bryan thats spot on thank you
mg