Mitsubishi L02CPU User Manual

306
(a) Overhead time at execution of interrupt and fixed scan execution type programs
When using an interrupt or fixed scan execution type program, add the overhead time given in the following
table. Two kinds of overhead time (pre-start and program-end) need to be added to interrupt programs.
(b) Overhead time when local devices in the interrupt program are enabled
Add the overhead time given in the following table when enabling the use of the local device in the program by
turning on SM777 (Enable/disable local device in interrupt program), add the time given in the following table.
[Pre-start overhead time for interrupt programs]
(N1 × KM1) + ((N2 + (N3/16)) × KM2) + (N4 × KM3) + KM4 [µs]
[Overhead time after interrupt program activation]
(N1 × KM5) + ((N2 + (N3/16)) × KM6) + (N4 × KM) + KM8 [µs]
• N1: F Number of device types that specified a local device
• N2: FNumber of word device points
• N3: FNumber of bit device points
• N4: F Number of index register points that were specified as a local device
CPU module
Pre-start overhead time for interrupt programs
Interrupt from the
built-in I/O
(I0 to I15)
Fixed scan interrupt
(I28 to I31)
Interrupt from the intelligent
function module
(I50 to I127)
Without high-
speed start
With high-
speed start
Without high-
speed start
With high-
speed start
Without high-
speed start
With high-
speed start
L02CPU 57.0 [µs] 19.0 [µs] 51.0 [µs] 17.0 [µs] 66.0 [µs] 31.0 [µs]
L26CPU-BT 54.0 [µs] 18.0 [µs] 46.0 [µs] 16.0 [µs] 61.0 [µs] 26.0 [µs]
CPU module
Program-end overhead time for interrupt programs
Without high-speed start With high-speed start
L02CPU 28.0 [µs] 9.0 [µs]
L26CPU-BT 26.0 [µs] 8.5 [µs]
CPU module
Overhead time for fixed scan execution type programs
Without high-speed start With high-speed start
L02CPU 77.0 [µs] 25.0 [µs]
L26CPU-BT 72.0 [µs] 23.0 [µs]
CPU module KM1 KM2 KM3 KM4 KM5 KM6 KM7 KM8
L02CPU 8.0 0.22 0.65 90.0 8.0 0.22 0.65 30.0
L26CPU-BT 8.0 0.10 0.68 80.0 8.0 0.10 0.68 20.0

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