Omron CJ1M-CPU series Programming Manual

18
Description of Tasks Section 1-6
Task Execution Time While a task is on standby, instructions in that task are not executed, so their
OFF instruction execution time will not be added to the cycle time.
Note From this standpoint, instructions in a task that is on standby are just like
instructions in a jumped program section (JMP-JME).
Since instructions in a non-executed task do not add to the cycle time, the
overall system performance can be improved significantly by splitting the sys-
tem into an overall control task and individual tasks that are executed only
when necessary.
Earlier system
Most instructions
are executed.
(Instructions in
subroutines and
jumps are
executed only
when neces
sary.)
CS/CJ-series PLCs
Instructions are
executed only
when necessary.
Task 0
Task 1
Task 2
Task 3

Omron CJ1M-CPU series Specifications

General

Series	CJ1M
Program Memory	Flash Memory
Power Supply Voltage	24V DC
Operating Temperature	0 to 55°C
Type	Programmable Controller
CPU Type	CPU11, CPU12, CPU13, CPU21, CPU22, CPU23
Data Memory	SRAM
Data Memory Capacity	32K words (CJ1M-CPU11/12/13), 64K words (CJ1M-CPU21/22/23)
Instruction Execution Time (Basic Instructions)	0.1 μs (LD instruction)
Instruction Set	Basic instructions, advanced instructions
Programming Language	Ladder Diagram, Structured Text, Function Block Diagram
Communication Ports	RS-232C
Expansion Slots	Up to 3
Mounting	DIN rail mounting
Storage Temperature	-25 to 70°C
Dimensions	90 x 90 x 70 mm
Weight	Approx. 200g (0.44 lb)
Number of Instructions	Over 400 instructions