Rockwell Automation 1756-HIST2G FactoryTalk Historian ME 2.2 - Manual (Page 100)

F ACTORY T ALK H ISTORIAN ME M ODULE U SER ’ S G UIDE
90
„
Treats conditions other than Any as Any.
The EVENT keyword:
„
Requires a trigger condition for it to function properly.
„
Allows a space, comma, or semicolon to separate trigger definitions.
I NSTRUMENT T AG
The Instrument Tag field is used for the full path to the controller. If a source tag
receives events from a controller, the tag in this field will read (or write back) events
from the controller. The tag name syntax is:
.
Keyword
Trigger
Condition Description Example
TRIG The condition is always Any.
EVENT Any
EVENT Nonzero Trigger on any non-zero
value. An event is triggered on a
value change from “Pt
Created” to 1 but it is not
triggered on a value
change from 1 to “bad
Input”.
EVENT Anychange Trigger on any change as
long as the value of the
current event is different
from the value of the
previous event. An event will be triggered
on a value change from 0
to “bad Input” or from
“bad Input” to 0.
EVENT Increment Trigger on any increase in
value. An event will be triggered
on a value change from 0
to 1.
EVENT Decrement Trigger on any decrease in
value. An event will be triggered
on a value change from 1 to
0.