Contents

SAFETY PRECAUTIONS
CONDITIONS OF USE FOR THE PRODUCT
INTRODUCTION
COMPLIANCE WITH EMC AND LOW VOLTAGE DIRECTIVES
RELEVANT MANUALS
CONTENTS
TERMS
PACKING LIST
CHAPTER 1 FEATURES
- 1.1 CC-Link
- 1.2 Overview of Communication
CHAPTER 2 PART NAMES
CHAPTER 3 SPECIFICATIONS
- 3.1 General Specifications
- 3.2 Performance Specifications
  - 3.2.1 Maximum number of connected stations
  - 3.2.2 Maximum overall cable distance
  - 3.2.3 Ver.1.10 compatible CC-Link dedicated cable
- 3.3 Function List
- 3.4 Mode Selection
  - 3.4.1 Expanded cyclic setting
- 3.5 I/O Signal List
- 3.6 Buffer Memory List
CHAPTER 4 PROCEDURE BEFORE OPERATION
CHAPTER 5 SYSTEM CONFIGURATION
- 5.1 System Configuration
  - 5.1.1 System configuration of the L series master/local modules
  - 5.1.2 System configuration on CC-Link
- 5.2 Applicable System
  - 5.2.1 Applicable modules and number of connectable modules
  - 5.2.2 Restrictions on use with the head module
  - 5.2.3 Precautions on the system configuration
CHAPTER 6 INSTALLATION AND CONNECTION
- 6.1 Module Installation Environment and Position
  - 6.1.1 Handling precautions
- 6.2 Hardware Test
- 6.3 Connecting Modules with Ver.1.10 Compatible CC-Link Dedicated Cables
  - 6.3.1 Wiring check
- 6.4 T-Branch Connection
  - 6.4.1 T-branch system configuration
  - 6.4.2 T-branch communication specifications list
- 6.5 Loop Test
  - 6.5.1 Loop test 1
  - 6.5.2 Loop test 2
CHAPTER 7 PARAMETER SETTINGS
- 7.1 Parameter Setting Method
- 7.2 Parameter Setting List
- 7.3 Parameter Settings for a Master Station
  - 7.3.1 Setting method
  - 7.3.2 Setting details
- 7.4 Parameter Settings for a Local Station and Standby Master Station
  - 7.4.1 Setting method
  - 7.4.2 Setting details
- 7.5 Precautions on the Parameter Setting
CHAPTER 8 FUNCTIONS
- 8.1 Basic Functions
  - 8.1.1 Communication with remote I/O stations
  - 8.1.2 Communication with remote device stations
  - 8.1.3 Communication with local stations
  - 8.1.4 Communication with intelligent device stations
- 8.2 Functions for Improving System Reliability
  - 8.2.1 Slave station cut-off function
  - 8.2.2 Automatic return function
  - 8.2.3 Data link status setting in case of master station programmable controller CPU failure
  - 8.2.4 Setting the status of input data from a data link faulty station
  - 8.2.5 Slave station refresh/compulsory clear setting in case of programmable controller CPU STOP
  - 8.2.6 Station status at error occurrence
  - 8.2.7 Standby master function
  - 8.2.8 Data link start by standby master station
  - 8.2.9 Block guarantee of cyclic data per station
  - 8.2.10 Secured 32-bit data
- 8.3 Handy Functions
  - 8.3.1 Remote device station initialization procedure registration function
  - 8.3.2 Event issuance for the interrupt program
  - 8.3.3 Automatic CC-Link startup
  - 8.3.4 Reserved station function
  - 8.3.5 Error invalid station setting function
  - 8.3.6 Temporary error invalid station setting function
  - 8.3.7 Scan synchronous function
  - 8.3.8 Data link stop/restart
  - 8.3.9 Remote I/O station points setting
  - 8.3.10 Master station duplication error cancel function
CHAPTER 9 DEDICATED INSTRUCTIONS AND PROGRAMMING
- 9.1 Dedicated Instructions
  - 9.1.1 Dedicated instruction list, applicable devices, and precautions
  - 9.1.2 G(P).RIRD
  - 9.1.3 G(P).RIWT
  - 9.1.4 G(P).RIRCV
  - 9.1.5 G(P).RISEND
  - 9.1.6 G(P).RIFR
  - 9.1.7 G(P).RITO
  - 9.1.8 G(P).RLPASET
  - 9.1.9 G(P).RDMSG
- 9.2 Precautions on Programming
CHAPTER 10 EXAMPLE OF COMMUNICATION BETWEEN THE MASTER STATION AND REMOTE I/O STATIONS
- 10.1 When Remote I/O Net Mode is Used
  - 10.1.1 Configuring a system
  - 10.1.2 Parameter setting
  - 10.1.3 Creating a program
  - 10.1.4 Performing the data link
CHAPTER 11 EXAMPLE OF COMMUNICATION BETWEEN THE MASTER STATION AND REMOTE DEVICE STATIONS
- 11.1 When Remote Net Ver.1 Mode is Used
  - 11.1.1 Configuring a system
  - 11.1.2 Parameter setting
  - 11.1.3 Creating a program
  - 11.1.4 Performing the data link
- 11.2 When Remote Net Ver.2 Mode is Used
  - 11.2.1 Configuring a system
  - 11.2.2 Parameter setting
  - 11.2.3 Creating a program
  - 11.2.4 Performing the data link
- 11.3 When Remote Net Additional Mode is Used
  - 11.3.1 Configuring a system
  - 11.3.2 Parameter setting
  - 11.3.3 Creating a program
  - 11.3.4 Performing the data link
CHAPTER 12 EXAMPLE OF COMMUNICATION BETWEEN THE MASTER STATION AND LOCAL STATIONS
- 12.1 When Remote Net Ver.1 Mode is Used
  - 12.1.1 Configuring a system
  - 12.1.2 Setting the master station parameters
  - 12.1.3 Setting the local station parameters
  - 12.1.4 Creating a program
  - 12.1.5 Performing the data link
- 12.2 When Remote Net Ver.2 Mode is Used
  - 12.2.1 Configuring a system
  - 12.2.2 Setting the master station parameters
  - 12.2.3 Setting the local station parameters
  - 12.2.4 Creating a program
  - 12.2.5 Performing the data link
- 12.3 When Remote Net Additional Mode is Used
  - 12.3.1 Configuring a system
  - 12.3.2 Setting the master station parameters
  - 12.3.3 Setting the local station parameters
  - 12.3.4 Creating a program
  - 12.3.5 Performing the data link
CHAPTER 13 COMMUNICATION BETWEEN THE MASTER STATION AND INTELLIGENT DEVICE STATIONS
CHAPTER 14 EXAMPLE OF COMMUNICATION WHEN USING THE HEAD MODULE
- 14.1 System Configuration Example
- 14.2 Image of Link Scan and Link Refresh by Cyclic Transmission
- 14.3 Parameter Settings
  - 14.3.1 Setting parameters of the CC-Link IE Field Network master station
  - 14.3.2 Setting parameters of the head module
- 14.4 Program Example of CC-Link IE Field Network Master Station
CHAPTER 15 TROUBLESHOOTING
- 15.1 Troubleshooting Procedures
  - 15.1.1 Flowcharts for troubleshooting by LEDs
  - 15.1.2 Flowcharts for troubleshooting by GX Works2
- 15.2 List of Problems
  - 15.2.1 When disconnecting a slave station
  - 15.2.2 When cyclic data are faulty
  - 15.2.3 When transient data are faulty
  - 15.2.4 When operation of the master station is faulty
- 15.3 Error Codes
  - 15.3.1 How to check error codes
  - 15.3.2 Error code list
- 15.4 CC-Link Diagnostics
  - 15.4.1 Host monitoring/Other station monitoring
  - 15.4.2 Loop test/Obtain transmission speed setting
  - 15.4.3 Status logging
  - 15.4.4 Creating a check sheet
  - 15.4.5 H/W information
APPENDICES
- Appendix 1 Details of the I/O Signals
- Appendix 2 Buffer Memory Details
- Appendix 3 Link Special Relays and Registers (SB/SW)
  - Appendix 3.1 Link special relays (SB)
  - Appendix 3.2 Link special registers (SW)
- Appendix 4 Data Link Processing Time
  - Appendix 4.1 Link scan time
  - Appendix 4.2 Transmission delay time of master station <-> remote I/O station
  - Appendix 4.3 Transmission delay time of master station <-> remote device station (Ver.1 compatible slave station)
  - Appendix 4.4 Transmission delay time of master station <-> remote device station (Ver.2 compatible slave station)
  - Appendix 4.5 Transmission delay time of master station <-> local station (Ver.1 compatible slave station)
  - Appendix 4.6 Transmission delay time of master station <-> local station (Ver.2 compatible slave station)
  - Appendix 4.7 Transmission delay time of master station <-> intelligent device station
  - Appendix 4.8 Processing time for dedicated instructions of master station <-> local station
  - Appendix 4.9 Processing time for dedicated instructions of local station <-> local station
  - Appendix 4.10 Processing time for dedicated instructions of master station <-> intelligent device station
  - Appendix 4.11 Link refresh time of master station/local station
- Appendix 5 How to Confirm the Serial No. and Function Version.
- Appendix 6 Added Functions
- Appendix 7 Differences Between the L Series Master/Local Module and QJ61BT11N
  - Appendix 7.1 Specification comparison
  - Appendix 7.2 Precautions when utilizing the program
- Appendix 8 When Using the GX Developer
  - Appendix 8.1 Compatible software package
  - Appendix 8.2 Operation comparison
- Appendix 9 External Dimensions
INDEX
REVISIONS
WARRANTY
TRADEMARKS

Mitsubishi Electric L26CPU BT User's Manual

Mitsubishi Electric L26CPU BT manual cover

Pages 478

Year 2010

Language(s)

of 478

Mitsubishi Electric L26CPU BT Specification

The Mitsubishi Electric L26CPU BT is a compact yet powerful programmable logic controller (PLC) designed to meet the automation needs of various industrial applications. It features an integrated CPU with high-speed processing capabilities, offering a program capacity of 260 K steps and an execution speed of 9.5 nanoseconds per instruction. This PLC is equipped with 40 I/O points, supporting both digital and analog inputs and outputs, and offers seamless integration with various networks through built-in Ethernet and RS-232/485 communication ports.

The L26CPU BT is engineered for ease of use and flexibility, featuring a user-friendly programming environment compatible with Mitsubishi’s GX Works2 software, which supports structured programming languages such as ladder logic, structured text, and function block diagrams. Its robust design includes advanced diagnostic and maintenance functions, ensuring reliable operation in demanding environments.

This PLC supports multiple communication protocols, including CC-Link IE Field, Modbus TCP/IP, and MELSECNET/H, facilitating efficient data exchange and interoperability with other devices and systems. The L26CPU BT also incorporates advanced motion control functions, making it suitable for applications requiring precise control over servo and stepper motors.

Designed with scalability in mind, it allows for easy expansion through additional I/O modules and special function modules, accommodating a variety of complex automation tasks. With a compact form factor and energy-efficient operation, the Mitsubishi Electric L26CPU BT offers a cost-effective solution for enhancing productivity and optimizing control processes in manufacturing, process control, and other industrial settings. Its robust performance, versatile connectivity, and ease of integration make it a preferred choice for automating small to medium-sized systems.

Mitsubishi Electric L26CPU BT F.A.Q.

How can I connect the Mitsubishi Electric L26CPU BT to an HMI device?

To connect the L26CPU BT to an HMI device, use an Ethernet cable to connect both devices to the same network. Configure the IP address settings on the HMI to match the network settings of the L26CPU BT. Ensure that the communication protocols and ports are correctly set on both devices.

What steps should I take to troubleshoot a communication error in the L26CPU BT?

First, check the physical connections and ensure all cables are securely attached. Verify that the network settings, such as IP addresses and subnet masks, are correctly configured. Use diagnostic tools to ping the device and check for network connectivity. Review any error codes displayed on the CPU and consult the manual for further guidance.

How do I update the firmware on the L26CPU BT?

To update the firmware, download the latest firmware version from the Mitsubishi Electric website. Connect your computer to the L26CPU BT via Ethernet or USB. Use the Mitsubishi Electric configuration software to upload the new firmware file to the CPU, following the instructions provided in the software.

What maintenance tasks are recommended for the L26CPU BT?

Regularly inspect and clean the CPU and its environment to prevent dust accumulation. Check connections for signs of wear or corrosion. Update software and firmware periodically to ensure optimal performance. Document any changes or issues in a maintenance log for future reference.

How can I reset the L26CPU BT to its factory settings?

To reset the L26CPU BT to factory settings, locate the reset switch on the unit. Hold the switch for the time specified in the manual until the system indicates a reset is occurring. Note that this will erase all user data and configurations, so ensure backups are made if necessary.

What should I do if the L26CPU BT does not power on?

Check the power supply and ensure it is functioning correctly. Verify that the power cables are properly connected to both the power source and the CPU. Inspect the CPU for any visible damage. If the problem persists, consult the manual or contact Mitsubishi Electric support.

How do I configure I/O modules for use with the L26CPU BT?

Use the Mitsubishi Electric programming software to configure I/O modules. Connect the modules to the CPU and open the software. Navigate to the I/O configuration section, where you can assign addresses and set parameters for each module. Ensure configurations are saved and downloaded to the CPU.

Can the L26CPU BT be integrated with third-party devices?

Yes, the L26CPU BT can be integrated with third-party devices. Ensure compatible communication protocols are used, such as Modbus or Ethernet/IP. Configure the necessary parameters in both the CPU and the third-party device to establish successful communication.

How do I perform a backup of the programs on the L26CPU BT?

Connect your computer to the L26CPU BT using Mitsubishi Electric's programming software. Navigate to the program management section and select the backup option. Follow the prompts to save the current programs to your computer or an external storage device.

What indicators or LEDs should I check if the L26CPU BT is not functioning correctly?

Check the status LEDs on the CPU for any error indications. Refer to the manual for LED patterns and their meanings. Common indicators include power, run, and error LEDs. If an error is indicated, consult the manual for specific troubleshooting steps.