Omron NT620C, Operation Manual

Page: 305 / 337

Appendix F NT620S/NT620C Internal Processing
299
Incidental Processing
When the status of the NT620S/620C changes during operation (ex. touch switch is pressed), the processing for
writing the changed data to the relevant area of the PC memory is executed.
This kind of processing is only executed when statuses change. When changes occur simultaneously, the proces-
sing is executed in accordance with the order of priority.
[NT620S/620C processing] [Details of processing]
(PT
→
PC)
(PT
→
PC)
Writing to character string memory tables
High
Low
Writing to the PT status notify area
Changing the contents of words allocated to the PC
when the value in a numeral memory table has
changed.
Changing the contents of words allocated to the PC
when the value in a numeral memory table has
changed.
Writing to bits in order to inform the PC that a
touch switch has been pressed.
Writing to the PT status notify area in order to
inform the PC of changes in the PT operating
status.
Bit writing
Writing to numeral memory tables
Order of priority
(PT
→
PC)
(PT
→
PC)
Data is only written to PC bits and numeral/character string memory tables for elements in screens currently being
displayed. If the contents of numeral/character string memory tables that are not being displayed change, the
changed contents are not written to the PC.