Tag identifier Meaning
REQUEST The tag is used to add a variable to the cyclic reading service (hotlink). As a consequence,
the access time to variables, which are not linked to the control, is reduced.
If a function
is to be called automatically when a value changes, then the name of the function
should be specified as an additional attribute.
This tag is only processed within the INIT operation.
Attributes:
● name
Address identifier
● function
Function name
Syntax:
<REQUEST name = "<NC-Variable>" />
or
<REQUEST name = "<NC-Variable>" function="<function name>"/>
Example:
<request name ="plc/mb10" />
or
<function_body name="my_function" >
<print text="value changed" />
</function_body>
…
…
…
<request name ="plc/mb10" function="my_function"/>
UPDATE_CONTROLS The tag runs a comparison between the operator controls and the reference variables.
Attribute::
● type
The attribute defines the direction of the data comparison.
= TRUE – data is read from the reference variables and copied to the operator controls.
= FALSE
– Data is copied from the operator controls to the reference variables.
Syntax:
<UPDATE_CONTROLS type = "<Direction>"/>
Example:
<SOFTKEY_OK>
< UPDATE_CONTROLS type="false"/>
</SOFTKEY_OK>
Generating user dialogs
1.6 XML identifier
Easy XML
70 Programming Manual, 10/2015, 6FC5397-3DP40-5BA3
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