MELSEC FX
Investigate I/O, sequence logic and machine interlocks on existing FX installations. Trace what the controller is seeing and why the expected output is missing.
GX Developer / GX Works2, depending on modelPlatform experience / Mitsubishi Electric
Mitsubishi controls.
Practical support.
From established FX and Q-series machinery to iQ-F and iQ-R systems. Practical support with the program, the I/O and the equipment it controls.
The hardware behind the support
Familiar platforms.
Real equipment.
Compact PLC hardware in the newer GX Works3 engineering environment.
Modular controllers for larger machine and production control systems.
01 / Controllers & interfaces
Understand the program.
Trace the signals.
Support across the FX, Q and iQ families, with attention to the original project, the installed modules and the software used to engineer them.
MELSEC Q
Program investigation, controller diagnostics and hardware configuration on modular Q-series systems. Support with the connections between the CPU, I/O and wider machine.
GX Developer / GX Works2, depending on projectMELSEC iQ-F
Support for FX5-based machine control. Online monitoring, program changes and investigation of connected equipment within the existing project.
GX Works3MELSEC iQ-R
Support with program logic, module configuration and controller diagnostics. Understand the installed architecture before making an agreed change.
GX Works302 / On the machine
Follow the sequence.
Find the missing condition.
Machine support starts with the installed controller and the symptoms. Understand the logic, field signals and communications together.
Machine support
Sequence diagnostics
Trace interlocks, state changes and permissives to understand where a machine is stopping.
Machine support
I/O & field equipment
Compare live program signals with sensors, relays, actuators and the electrical drawings.
Machine support
Connected equipment
Investigate PLC communication and command exchange with HMIs, drives and networked modules. Identify the exact device before agreeing the work.
03 / Engineering software
The right tools
for the installed system.
Start with the equipment, the original project and the engineering version. Keep changes grounded in how the existing machine is configured.
GX Developer
Established MELSEC projects, including compatible FX and Q controllers. Start with the original project format and the exact CPU model.
GX Works2
Engineering and maintenance for compatible FX and Q-series systems. Online monitoring, program investigation and project backups.
GX Works3
The engineering environment for MELSEC iQ-F and iQ-R controllers. Program, hardware and diagnostics in the relevant project version.
Project & hardware checks
Identify the CPU, installed modules, connection method and engineering version before connecting or planning a modification.
Include the equipment model, software version and available project files when you enquire.
04 / Practical support
From the first alarm
to the next step.
A clear understanding of the problem and practical options for your equipment.
Fault finding & diagnostics
Trace missing signals, sequence stops and equipment alarms. Connect software findings to the electrical and mechanical behaviour of the machine.
Industrial communications
Check addressing, device status and the data path between controllers, I/O, HMIs and connected equipment.
Operator information
Investigate alarms and displayed status. Improve the information available to operators and maintenance teams.
Backups & replacement support
Review available projects and configurations, support replacement setup and document agreed changes.
Commissioning & modifications
Support with I/O checks, machine sequences and agreed changes to existing controls.
Existing systems & upgrades
Assess installed equipment and dependencies, then work through practical options for repair, replacement or improvement.
Tell me what you have
A model number.
A symptom. A starting point.
Send the equipment details, symptoms and site location. Photos of the hardware, alarm messages and available project information help establish the scope.
Mitsubishi Electric and MELSEC are trademarks of their respective owner. Product images are supplied by the manufacturer and show representative hardware. Chase Controls is an independent service and is not affiliated with or endorsed by Mitsubishi Electric.