Omron CJ2 CPU UNIT SOFTWARE User Manual

10-19
10 CPU Unit Functions
CJ2 CPU Unit Software User’s Manual
10-2 Cycle Time/High-speed
Processing
10
10-2-6 High-speed Interrupt Function
High-speed interrupt function improves execution of interrupt tasks under certain restrictions (unit ver-
sion 1.1 or later).
Use the following procedures to shorten the overhead time (i.e., interrupt task startup time + Cyclic
task return time) when executing I/O interrupt tasks, external interrupt tasks, or scheduled interrupt
tasks.
z PLC Setup
When using the CX-Programmer, select the Enable high-speed interrupt function Check Box on the
Timings/Synchronous Tab Page.
10-2-6 High-speed Interrupt Function
Shortening the Interrupt Overhead Time
Interrupt task type
Interrupt overhead time
High-speed interrupt function
enabled
High-speed interrupt function disabled
(default)
I/O interrupt tasks and exter-
nal interrupt tasks
25 µs
(Interrupt task startup time 17 µs
+ Cyclic task return time 8 µs)
37 µs
(Interrupt task startup time 26 µs + Cyclic
task return time 11 µs)
Scheduled interrupt task 21 µs
(Interrupt task startup time 13 µs
+ Cyclic task return time 8 µs)
33 µs
(Interrupt task startup time 22 µs + Cyclic
task return time 11 µs)

Omron CJ2 CPU UNIT SOFTWARE Specifications

General

Brand	Omron
Model	CJ2 CPU UNIT SOFTWARE
Category	Software
Language	English