Omron V022-E3-1 Event Processing When Using Direct Connection, Appendix, NT600S processing

￿￿￿￿￿￿%￿￿￿￿￿￿￿$￿￿￿￿￿￿￿￿￿ Appendix I

Reference Only the bit and numeral/character-string memory table data of elements current- ly being used in the screen display is written to the PC. If the contents of a numer- al/character-string memory table that is not being used for display change, the new data is not written to the PC.

Event Processing (When Using Direct Connection)

When the status of the NT600S changes during operation, the processing for writing the changed data to the rele- vant area of the PC memory is executed.

This kind of processing is only executed when statuses change. When changes occur simultaneously, the proces- sings are executed in accordance with the order of priority.

Order of priority

[NT600S processing]

High Writing to the PT status notify area

Bit writing

Writing to numeral memory tables

Low Writing to character string memory tables

(PT→PC)

(PT→PC)

(PT→PC)

(PT→PC)

[Details of processing]

Writing to the PT status notify area in order to inform the PC of changes in the PT operating status.

Writing to bits in order to inform the PC that a touch switch has been pressed.

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.

Reference Data is only written to PC bits and numeral/character string memory tables for ele- ments 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.

￿￿￿