8. Special I/O Functions
8.4 Interrupt input function
Function
When the signal state of the interrupt input is changed from OFF to ON (or ON to OFF), the corresponding I/O interrupt program is activated immediately.
Up to 2 interrupt inputs can be used. The interrupt generation condition can be selected either rising edge (OFF to ON) or falling edge (ON to OFF) for each input.
The I/O interrupt program #3 is corresponding to the interrupt input 1, and the I/O interrupt program #4 is corresponding to the interrupt input 2.
Hardware condition
Interrupt input (X002 and X003)
ON/OFF pulse width: 100 ms or more
Related registers
SW16: Function selection. Refer to section 8.1.
Interrupt input 1 | X002 |
Interrupt input 2 | X003 |
Interrupt assignment
Interrupt input 1 ¼ I/O interrupt program #3
Interrupt input 2 ¼ I/O interrupt program #4
Operation
Interrupt input 1
Interrupt input 2
Interrupt
3 | 4 | 3 | 4 |
The above operation example is the case of rising edge setting for both inputs.
280 T1/T1S User’s Manual
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