Special i/o functions – Toshiba 6F3B0253 User Manual

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6F3B0253

Basic Hardware and Function

269

8. Special I/O Functions

Sample program

Main program

(H3045)

I/O interrupt program #3

Interrupt program A

I/O interrupt program #4

Interrupt program B

In this example, 12357 (H3045) is set in SW16. As a result, the interrupt input function
(2 points, rising for both) is selected.
When X002 is changed from OFF to ON, the interrupt program A is executed. When
X003 is changed from OFF to ON, the interrupt program B is executed.

Even if the Direct I/O instruction is used in the interrupt program, the
corresponding input state (X002 or X003) cannot be confirmed. Because
the interrupt is generated before internal updating of the input states.

NOTE