View source for %udd

{{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>
From AMC 11.02 also alphanumeric labeling can be used. Alphanumeric labeling will be cleared after reset.
===Syntax===
 '''%udd(index)'''
 '''%udd(label)'''

Returns the content of UDD at the location ''index''. 
* index:  0 – 6000 ( 0 - 600 before AMC 9.01) 
* label:  1 - 16 characters alphanumeric label, no space, must start with a - z, A - Z. 30 labels available.

===Examples===
 %udd(8)           - ''Returns the content of UDD variable 8''
 %udd(%1.phy)      - ''Returns the content of UDD variable in indexed by the physical number of the event 'Owner'''
 %udd(myLabel)     - ''Return string/value of UDD label myLabel. (wudd "myLabel" "Hello World")

=== See also ===

'''Applications were UDD are used:'''
* [[CCTV control by relays (RCO) when using Call Request]]

'''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]]


Back to [[Event_Handler#List_of_macros]].

[[Category:Event Handler]]
[[Category:Event Handler macros]]