Omron CJ2M-CPU Series - Performance Information; A-4-1 Interrupt Input Response Time

Appendices
A-10
CJ2M CPU Unit Pulse I/O Module User’s Manual
A-4 Performance Information
Precautions for Correct UsePrecautions for Correct Use
The actual performance depends on a variety of factors that affect CPU Unit operation such as
the function's operating conditions, user program complexity, and cycle time. Use the perfor-
mance specifications as guidelines, not absolute values.
The interrupt response time is the time it takes between an OFF-to-ON signal (or ON-to-OFF signal for
down-differentiation) at the interrupt input terminal until the corresponding I/O interrupt task is actually
executed. The total response time is the sum of the hardware response time and software response
time.
A-4-1 Interrupt Input Response Time
Hardware Interrupt Response Time
Edge direction Interrupt response time
Rising edge 30 µs
Falling edge 150 µs
Software Interrupt Response Time
Interrupt type Interrupt response time
Interrupt inputs in Direct
Mode
33 µs min.
Interrupt inputs in Counter
Mode
34 µs min.
Input
Reading input
terminal
Interrupt task execution
Hardware interrupt response time
Software interrupt response time
Interrupt input response time
Interrupt response time = Hardware interrupt response time + Software interrupt response time