- Assign the variable to a memory address (%MW).
- Tick "Save" in data properties for this variable.
- Ensure in the CPU configuration that "Initialize %MW1 on cold start" is unticked and that "Automatic start in Run" is ticked.
- Write some logic to get the current value periodically (e.g., every minute), using the system bit %S94:
GET_CURR_VALS_TP (IN := %S7, PT := t#2s, Q => GET_CURR_VALS);
GET_CURR_VALS_RE := RE (IN := GET_CURR_VALS);
%S94 := GET_CURR_VALS_RE;
- Note that a "*" will be displayed at the bottom of the screen and some new messages will appear when connecting, going online, uploading, etc:
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