Set shutdown events for specific points
- Last UpdatedOct 02, 2024
- 1 minute read
Points that receive shutdown events are specified in the PI\dat\shutdown.dat file.
You can edit the shutdown.dat file to restrict shutdown events to certain groups of points. To specify more than one tag name, use a tag mask. Use the wildcards * and ?. An asterisk (*) matches all possibilities with any number of characters. The question mark (?) matches a single character and may be used any number of times.
Note: Do not specify additional tags by appending comma-separated tag masks or by using additional lines. You can specify only one tag mask. You must specify at least one tag mask to enable the shutdown system to operate without errors. To prevent all shutdown events, specify a tag mask that does not match any tag.
You can use other point attributes and values in addition to, or instead of, the shutdown flag. All conditions are logically combined with AND. If no point attributes are specified, all tags specified by the tag mask are selected to receive shutdown events.
For example, this configuration file entry selects only tags that start with s, have the location1 attribute set to 0, and the point source set to H. No other tags receive shutdown events:
! tag mask
s*
! point attributes
location1,0
pointsource,H