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Mitsubishi QX42 MELSEC-Q High-Density Digital Input Module for PLC Automation
| Place of Origin | Japan |
| Brand Name | Mitsubishi |
| Model Number | QX42 |
Product Overview
Mitsubishi QX42 is a MELSEC-Q series high-density digital input module used in PLC automation systems, machine control panels, production line equipment, and factory maintenance replacement projects. It is designed for applications where multiple discrete field input signals need to be collected into a Q series PLC system for machine logic, sequence control, alarm monitoring, and equipment status detection.
This model is suitable for systems with a larger number of input points, such as packaging lines, conveyors, material handling machines, assembly stations, and production equipment. QX42 is often searched by maintenance engineers when an installed MELSEC-Q input module needs replacement or when a control cabinet requires compatible spare parts.
Main Features
- MELSEC-Q series high-density digital input module
- Used for multiple discrete input signals in PLC control systems
- Suitable for sensors, switches, interlocks, and machine status feedback
- Helps support compact cabinet design with high input density
- Useful for maintenance replacement and production line recovery
Technical Specifications
| Model | QX42 |
| Brand | Mitsubishi |
| Series | MELSEC-Q |
| Product Type | Digital Input Module |
| Function | High-Density Discrete Input Signal Acquisition |
| Input Type | DC Digital Input, confirm by installed project |
| Application | PLC Input Monitoring and Machine Automation |
| Replacement Check | Confirm input voltage, connector type, wiring method, slot position, and PLC configuration |
Compatible System and Applications
QX42 is used in MELSEC-Q PLC systems with Q series CPU modules, base units, power supply modules, output modules, analog modules, positioning modules, and communication modules. It is suitable for production lines, automated machinery, conveyor systems, material handling equipment, test systems, assembly machines, and factory control panels requiring high-density input collection.
Maintenance and Replacement Notes
When replacing QX42, confirm the full model number, input voltage, point count requirement, wiring connector, field power supply, common wiring method, base unit slot, and original PLC program. Input signal problems may also come from field devices, damaged cables, wrong connector wiring, power supply failure, or parameter configuration errors.
Related Models
Related models include QX42, QX41, QX40, QX40-S1, QX41-S1, QX42-S1, QY42P, QY41P, QY40P, and QY50. These models may differ by input density, wiring connector, voltage type, output function, common structure, and system application.
Inquiry and Supply Notes
DF Automatic supplies Mitsubishi MELSEC-Q digital input modules, digital output modules, analog modules, CPU modules, communication modules, power supply modules, base units, HMI panels, servo systems, inverter drives, and industrial automation spare parts for factory maintenance, spare parts replacement, and PLC system repair.
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