Difference between revisions of "%chg"

Latest revision as of 14:28, 16 December 2020

The %chg macro is used in the Event Handler, and will return one value when the event goes ON, and another value when the event goes OFF.

%chg(ON_txt,OFF_txt)

Returns "ON_txt" when the event goes ON, "OFF_txt" when the event goes OFF

Example 1:

LOG "Door %1.dir is %chg(OPEN ,CLOSED)"

Example 2:

IF %chg(1,0)
LOG "Event goes ON"
stop
ENDIF
LOG "Event goes OFF"

@@ Line 1: / Line 1: @@
 {{AI}}
-The '''%udd''' macro is used in the [[Event Handler]] to read the value of an [[UDD]] (User Defined Data variable). [[Event_Handler#Formating|Text formatting parameters]] can be added at the end. <br>
+The '''%chg''' macro is used in the [[Event Handler]], and will return one value when the event goes ON, and another value when the event goes OFF. <br>
-From AMC 11.02 also alphanumeric labeling can be used. Alphanumeric labeling will be cleared after reset.
 ===Syntax===
 '''%chg(ON_txt,OFF_txt)'''
@@ Line 8: / Line 8: @@
 ===Examples===
-'''LOG “Door %1.dir is %chg(OPEN ,CLOSED)“'''
+Example 1:
- Result, event ON: - “Door 123 is OPEN ”
+ LOG "Door %1.dir is %chg(OPEN ,CLOSED)"
- Result, event OFF: - “Door 123 is CLOSED”
+*Result in System Log when event goes ON: - "Door 123 is OPEN"
+*Result in System Log when event goes OFF: - "Door 123 is CLOSED"
-=== See also ===
-'''Applications were UDD are used:'''
+Example 2:
-* [[CCTV control by relays (RCO) when using Call Request]]
+ IF %chg(1,0)
+ LOG "Event goes ON"
+ stop
+ ENDIF
+ LOG "Event goes OFF"
-'''Related articles:'''
-* Built-in command to write to UDD: [[WUDD]]
-*Data message to write to UDD: [[WRITE_USER_DEF_DATA|$WUDD]]
-*Variable for text string: [[tmp statement|tmp]]