Why is the FAULT light ON on my Mitsubishi Electric Control Unit?
If the FAULT light is on for your Mitsubishi Electric Control Unit, it could be due to an active slave station not being set for the parameter, or a slave station's address overlapping with the master station's. To resolve this, correct the parameters. If the FAULT LED remains on after correcting the parameters, further assistance may be needed.
What to do if the TOKEN light goes OFF on my Mitsubishi Electric MELSEC QJ71PB92D?
If the TOKEN light is off on your Mitsubishi Electric Control Unit, it means the token is not being cycled. To fix this: * Ensure the PROFIBUS-DP cable is properly connected. * Check the terminating resistance set switch for correct function. * Verify that station addresses do not overlap. * Confirm that the HSA does not exceed the network's maximum station address.
How to fix PRM SET flashing on Mitsubishi Electric Control Unit?
If the PRM SET light is flashing on your Mitsubishi Electric Control Unit, it indicates that the parameter is not set. You should set the parameters using the GX Configurator-DP.
What to do if RSP ERR goes ON on Mitsubishi Electric Control Unit?
If the RSP ERR light is on for your Mitsubishi Electric Control Unit, it indicates a communication trouble. You can read the trouble information from the communication trouble information area of the buffer memory to diagnose the issue.
General| Brand | Mitsubishi Electric |
|---|---|
| Model | MELSEC QJ71PB92D |
| Category | Control Unit |
| Language | English |
Identifies the specific module and manual focus.
Critical safety warnings indicating severe injury or death risks.
Safety warnings for potential medium/slight injury or physical damage.
Safety considerations during the system design phase.
Safety guidelines for installing the module.
Safety guidelines for wiring the module and cables.
Safety measures for startup and maintenance.
Guidelines for safe disposal of the product.
Describes the software architecture and components.
Highlights the key capabilities and functionalities of the QJ71PB92D module.
Explains compatible CPU modules and base units for the system.
Specific configuration for multi-CPU systems.
Important considerations and warnings when configuring the system.
Method to confirm the module's serial number.
Details the operational performance metrics of the module.
Explains how the PROFIBUS-DP network is structured.
Describes the fundamental setup of the network.
Shows different valid network connection scenarios.
Specifies the maximum number of slaves that can be connected.
Details the input/output signals for communication.
Lists all I/O signals and their descriptions.
Provides detailed explanations for each I/O signal.
Maps buffer memory addresses to their functions.
Describes the buffer memory layout and configuration.
Explains the contents and structure of the buffer memory.
Describes the buffer memory area for communication errors.
Lists and explains error codes encountered during operation.
Details the area for expanded communication error information.
Area for masking slave trouble information.
Buffer memory area for global control commands.
Stores the communication status of each slave station.
Defines start addresses for I/O areas for each slave.
Indicates the current operating mode of the module.
Area to set the desired operation mode.
Shows the outcome of an operation mode change request.
Stores codes indicating self-diagnosis results.
Details how the module communicates with slave stations.
Describes the step-by-step process for data exchange.
Explains functions for managing multiple slaves simultaneously.
Details the SYNC/UNSYNC functions for controlling slave output.
Details the FREEZE/UNFREEZE functions for controlling slave input.
Explains how to group slaves for global control operations.
Outlines the steps to perform a global control service.
Explains the function to swap upper/lower bytes of word data.
Prevents I/O data mismatch between CPU and slaves.
Describes how I/O data separation occurs and is prevented.
Method to enable prevention via auto refresh settings.
Method to enable prevention using dedicated instructions.
Explains the normal operation mode with fixed I/O allocation.
Explains the extended mode with variable I/O allocation.
Outlines the initial steps for connecting and setting up the module.
Step-by-step guide for setting module parameters.
Details the parameters configurable for the master station.
Explains the parameters related to the PROFIBUS-DP bus.
Details the parameters configurable for each slave station.
Covers the physical installation of the module.
Important safety and handling advice before installation.
Specifies suitable environments for module installation.
Identifies and explains the module's parts and indicators.
Describes how to perform and interpret self-diagnosis.
Provides instructions for connecting the module.
Specifics on wiring the PROFIBUS cable.
Explains the function of the bus termination switch.
Guidelines to prevent noise and ensure reliable wiring.
Procedures for maintaining and inspecting the module.
Explains how to calculate the bus cycle time.
Calculates bus cycle time with multiple masters.
Details the time taken for data transmission.
Shows programming for auto refresh communication.
Configuration steps for automatic refresh.
Setting slave parameters for auto refresh.
Steps to access the configuration utility.
Selecting a network configuration entry.
Scanning the rack for available boards.
Information extracted from the CPU.
Assigning configuration files to masters.
Selecting a GX Configurator-DP file.
Editing DP master settings via context menu.
Using the autorefresh settings editor.
Uploading IPARAM parameters to the PLC.
Resetting the PLC CPU after parameter setup.
Illustrates a sample program for I/O operations.
Programming example for MODE 0 using FROM/TO instructions.
Programming example for MODE E using FROM/TO instructions.
Programming example for MODE 0 with dedicated instructions.
Example program for executing global control functions.
Details the BBLKRD instruction for reading buffer memory.
Details the BBLKWR instruction for writing buffer memory.
Compares features between different module series.
Lists functional and specification differences.
Provides extended details on slave-related troubles.
Shows physical dimensions and layout of the module.
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