Mitsubishi L02CPU User Manual

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CHAPTER 3 CPU MODULE FUNCTIONS
3
3.6 Service Processing Setting
(c) Specify service process execution counts
Operation when 1 time is set is as shown below.
Operation when 2 times is set is as shown below.
● When several devices are connected to one CPU module, each device requests service processing. When the CPU
module simultaneously receives requests from several devices, a single END processing can simultaneously accept
several requests if the service processing count is set to the number of connected devices. This improves response
performance. Note that the scan time increases by the amount of service processing time.
● If no request data for service processing exists, END processing speeds up by the amount of request processing time.
(The CPU module does not wait for requests.)
Program execution
END processing
Request 1)
Program execution
END processing
Request 2)
Program execution
END processing
Request 3)
Peripheral
Regardless of request data size, one
request is processed at one END processing.
Even if the program execution time is the same,
the scan time depends on service processing time.
Request 1)
Request 2)
Request 3)
Request 4)
Request 5)
1st scan
2nd scan
3rd scan
Program execution
END processing
Request 1)
Program execution
END processing
Request 2)
Request 3)
Peripheral
Request 4)
Regardless of request data size, two requests
are processed at one END processing.
Request 1)
Request 2)
Request 3)
Request 4)
Request 5)
1st scan
2nd scan

Mitsubishi L02CPU Specifications

General

Brand	Mitsubishi
Model	L02CPU
Category	Controller
Language	English

Summary

MITSUBISHI MELSEC-L CPU Module User's Manual

SAFETY PRECAUTIONS

Design Precautions

Essential safety guidelines for designing systems with the controller, covering circuits and operations.

Installation Precautions

Crucial steps for safely installing the programmable controller modules, including environment and interconnection.

Wiring Precautions

Important safety measures for correctly wiring the controller, covering grounding, terminals, and cable routing.

Startup and Maintenance Precautions

Precautions for safe startup, operation, and maintenance procedures, including handling batteries and static electricity.

PART 1 PROGRAMMING

CHAPTER 1 BASIC PROCEDURE FOR PROGRAMMING

Guides through the fundamental steps of PLC programming.

CHAPTER 1 BASIC PROCEDURE FOR PROGRAMMING

1.2 Creating a Project

1.3 Creating a Program

Explains the fundamental steps and prerequisites for program creation.

1.4 Converting a Program

1.5 Writing a Project to the CPU Module

Describes how to transfer the project, including memory formatting.

1.6 Checking an Operation of the CPU Module

Outlines procedures for verifying the CPU module's operation after programming.

CHAPTER 3 CPU MODULE FUNCTIONS

3.2 Constant Scan

3.3 Watchdog Timer (WDT)

Details the watchdog timer for detecting hardware failures and program errors.

3.4 Latch Function

3.5 Initial Device Value

3.11 File Password 32

Explains how to protect files stored in the CPU module with passwords.

3.13 Remote Operation

Details methods for controlling CPU module operations remotely.

3.17 Local Device Monitor/Test

3.19 Executional Conditioned Device Test

3.20 Sampling Trace

3.21 Writing Programs in RUN Status

Describes online program changes while the CPU module is running.

3.23 Self-Diagnostic Function

Covers the CPU module's self-diagnostic capabilities for error detection.

3.24 Error Clear

Explains how to clear detected continuation errors by type.

3.27 Latch Data Backup to Standard ROM

3.30 CPU Module Change Function with SD Memory Card

Explains data backup and restoration using an SD memory card for module replacement.

Appendix 1 Parameter Setting

Appendix 1.2 PLC Parameter

Details various PLC parameter settings including name, system, file, RAS, boot, and program.

Appendix 1.4 Remote Password setting

Provides screens and details for setting remote passwords for access control.

Appendix 1.2 PLC Parameter

2. PLC System Setting

Configures system-level parameters for CPU module operation.

3. PLC File Setting

4. PLC RAS Setting

Configures Reliability, Availability, and Serviceability (RAS) functions.

5. Boot File Setting

6. Program Setting

8. Device Setting

9. I/O Assignment Setting

Configures the connecting status and assignments of modules in the system.

11. Built-in Ethernet Port Setting

12. Built-in I/O Function Setting