Mitsubishi L02CPU User Manual

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5.2.11 Counter (C)
The counter (C) is a device that counts the number of rises for input conditions in programs. When the count value
reaches the set value, its contact is turned on.
(1) Counter type
The following counter is available.
• Counter that counts the number of rises for input conditions in programs
(2) Counting
(a) When OUT C instruction is executed
The coil of the counter is turned on/off, the current value is updated (the count value + 1), and the contact is
turned on. In the END processing, the current timer value is not updated and the contact is not turned on.
(b) Current value update (count value + 1)
The current value is updated (count value + 1) at the leading edge (off → on) of the OUT C instruction. The
current value is not updated while the coil is off, or when it remains on or turns off from on by the OUT C
instruction.
END OUT C0 END
[Program example]
[Processing at OUT C0 instruction (X0: OFF to ON)]
Coil ON/OFF
Current value update
Contact ON
Processing
[Program example]
X0
OFF
OFF
ON
ON
END END ENDOUT C0 OUT C0 OUT C0
[Current value update timing]
Program
Coil of C0
Current value update
Current value update

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