Omron CJ1M-CPU series User Manual

58
Function Tables Section 1-7
Managing the
Cycle Time
Reducing the cycle time. • Use tasks to put parts of the pro-
gram that don’t need to be executed
into “standby” status.
• Use JMP(004) and JME(005) to
jump parts of the task that don’t
need to be executed.
• Convert parts of the task to subrou-
tines if they are executed only under
particular conditions.
• Disable a Unit’s Special I/O Unit
refreshing in the PLC Setup if it isn’t
necessary to exchange data with
that Special I/O Unit every cycle.
Programming
Manual
(W394)
6-1 Cycle
Time/High-
speed Pro-
cessing
Setting a fixed (minimum)
cycle time.
Set a minimum cycle time in the PLC
Setup.
Setting a maximum cycle
time.
(Generating an error for a
cycle time exceeding the
maximum.)
Set a maximum cycle time (watch
cycle time) in the PLC Setup. If the
cycle time exceeds this value, the
Cycle Time Too Long Flag (A40108)
will be turned ON and PLC operation
will be stopped.
Operation
Manual
7-1 PLC
Setup
Reducing the I/O response
time for particular I/O
points.
Use immediate refreshing or
IORF(097).
Programming
Manual
(W394)
6-1 Cycle
Time/High-
speed Pro-
cessing
Finding I/O refresh times
for individual Units
--- Operation
Manual
Parallel
Processing
Mode (CJ-H
CPU Units
Only)
Studying the I/O response
time
--- 10-4-6 I/O
Response
Time
Finding the increase in the
cycle time for online editing
--- 10-4-5
Online Edit-
ing Cycle
Time Exten-
sion
Giving peripheral servicing
priority over instruction exe-
cution
Use the Peripheral Servicing Priority
Mode
Programming
Manual
(W394)
6-6 Periph-
eral Servic-
ing Priority
Mode
Purpose Function Manual Reference

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

Summary

Certain Precautions on Specifications and Use

1. Suitability of Use

Seller not responsible for conformity with standards; Buyer must determine suitability for their application.

2. Programmable Products

Seller not responsible for user programming or its consequences.

3. Performance Data

Performance data is for guidance; users must correlate it to actual application requirements.

4. Change in Specifications

Product specifications may change without notice. Consult seller for confirmation of actual specifications.

Unit Versions of CS/CJ-series CPU Units

Unit Versions

Manages CPU Units by functionality differences accompanying upgrades. Applies to CS1-H, CJ1-H, CJ1M, CS1D units.

Notation of Unit Versions on Products

Unit version is indicated to the right of the lot number on the product nameplate.

Confirming Unit Versions with Support Software

CX-Programmer v4.0+ can confirm unit versions using PLC Information or Unit Manufacturing Information.

Troubleshooting Problems with Unit Versions on the CX-Programmer

SECTION 1 Introduction

1-1 Overview

Introduces CJ-series PLCs and their features compared to CS-series.

1-2 CJ-series Features

Details key features of CJ-series PLCs, including performance and size.

1-3 CJ1-H and CJ1M CPU Unit Features

Describes advanced features and capabilities of CJ1-H and CJ1M CPU Units.

1-4 CPU Unit Version Upgrades

Details new functions and improvements for Ver. 3.0 and Ver. 2.0 upgrades.

1-5 CPU Unit Comparison and Functions

Compares CJ1, CJ1-H, CJ1M CPU Units and lists function tables.