I/O Variables mapped from an I/O device do not change value.
values are greyed |
Since SP17, some clearer hints are given:
|
By default, a variable is shown with the actual value only if the variable is used in a task.
Your options are either:
The "Always update variables" setting is on the "<Name> I/O Mapping" tab for most devices. For the PLC Controller devices, it is on the "PLC Settings" tab. |
Related articles appear here based on the labels you select. Click to edit the macro and add or change labels.
|