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The FX3U-FLROM-64 MITSUBISHI (Model: FX3U-FLROM-64) is an essential non-volatile flash memory cassette engineered specifically for Mitsubishi Electric MELSEC FX3U and FX3UC Series compact PLCs.
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FX3U-FLROM-64 MITSUBISHI 64K Step Flash Memory Cassette
The FX3U-FLROM-64 MITSUBISHI (Model: FX3U-FLROM-64) is an essential non-volatile flash memory cassette engineered specifically for Mitsubishi Electric MELSEC FX3U and FX3UC Series compact PLCs. Providing 64,000 steps (64K steps) of program memory capacity, the FX3U-FLROM-64 MITSUBISHI allows system integrators to store PLC programs, symbolic comments, parameter blocks, and execution routines directly on removable memory hardware.
By plugging directly into the front memory slot of FX3U base units, the FX3U-FLROM-64 MITSUBISHI eliminates the risk of program loss due to internal PLC battery depletion during extended power outages. It also enables rapid program transfers, system cloning, and field maintenance without requiring a direct laptop connection to the PLC CPU.
Key Features of the FX3U-FLROM-64 MITSUBISHI
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64K Step Flash Memory: Expands non-volatile memory capacity up to 64,000 steps for large PLC programs, comments, and data registers.
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Battery-Free Program Retention: Non-volatile flash technology retains application code permanently without relying on internal RAM backup batteries.
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Direct CPU Front Slot Plug-In: Snaps into the dedicated memory slot behind the FX3U front cover with zero external wiring or mounting accessories.
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Program Protection Switches: Built-in write-protect switch prevents accidental program overwrites or unauthorized field modifications.
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Rapid System Replication: Allows fast field loading and cloning of standardized OEM machine logic across multiple automation panels.
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Loader Functionality: Supports program upload, download, and execution directly from the cassette hardware interface.
Primary Applications
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OEM Machine Replication: Standardizing and loading operational code across multiple production machinery units
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Remote Field & Marine Telemetry: Ensuring zero program loss during long-term shipboard power-downs or remote panel maintenance
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Industrial Process Control: Storing extended recipe tables, diagnostic routines, and multi-axis positioning profiles
Technical Specifications
| Parameter Category | Specification Details |
| Manufacturer / Brand | Mitsubishi Electric |
| Part Number / Keyword | FX3U-FLROM-64 MITSUBISHI (FX3U-FLROM-64) |
| PLC System Line | MELSEC FX3U / FX3UC Series |
| Memory Type | Flash ROM (Non-volatile) |
| Memory Capacity | 64,000 Steps (64K steps) |
| Write/Erase Endurance | Min. 10,000 rewrite cycles |
| Write Protection | Integrated Hardware Lock Switch |
| Mounting Interface | CPU Front Panel Memory Slot |
| Operating Temperature | 0°C to +55°C (32°F to 131°F) |
| Dimensions (H x W x D) | 20 x 40 x 10 mm |
| Weight | Approx. 0.02 kg |
Package Contents
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1 × FX3U-FLROM-64 MITSUBISHI 64K Step Flash Memory Cassette
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Protective Dust Cap & User Instruction Manual