Delta Electronics DUP-B Series User Manual page 306

For example, suppose that there are 25 element addresses on the screen and
Background is used (5 lines of macro commands), if the setting value of background
macro update cycle is set to 2, when background macro is executed, HMI will first read
25 element addresses and then execute 2 lines of background macro in sequence.
Revision May, 2010
Read 25 element addresses
After read operation
Execute 1st and 2nd line commands
of Background Macro
After execution
Read 25 element addresses
After read operation
Execute 3rd and 4th line commands
of Background Macro
After execution
Read 25 element addresses
After read operation
Execute 5th line commands of
Background Macro
After execution
Chapter 3 Creating and Editing Screens
Execute
Background Macro
again
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