1. General Description

2. Specifications

• Memory Type: Non‑volatile memory combining EPROM and Flash, providing high reliability and power‑fail data retention.

• Storage Capacity: Standard capacity for legacy controllers, sufficient for system firmware and small‑to‑medium user programs.

• Core Functions: Stores system firmware, robot job programs, CNC machining programs, axis parameters, I/O address assignments, tool compensation data, system backups, and fault logs; enables system boot from the board, one‑click backup/restore, and offline program migration between compatible controllers.

• Hardware Interface: Proprietary parallel bus edge connector, directly mating with the controller backplane slot for stable communication.

• Power Supply: Powered by 5 VDC from the controller backplane, no external power required, low power consumption.

• Operating Temperature: 0 °C to +55 °C, suitable for standard industrial cabinet temperature conditions.

• Storage Temperature: −20 °C to +70 °C, no data loss risk during long‑term storage.

• Humidity: 5% RH to 95% RH, non‑condensing, adaptable to humid industrial workshop environments.

• Mounting: Installed in a standard 3U slot inside the controller, secured by two screws for easy installation and removal.

• Physical Dimensions: Standard industrial control board size, compatible with Yaskawa MRC/XRC controller racks.

• Weight: Approximately 0.3 kg, lightweight design with no additional load on the controller.

• Compatibility: Fully compatible with Yaskawa MRC series robot controllers, XRC series robot controllers, and some older YASNAC i60/i70 series CNC systems.

• Product Status: Discontinued by the original manufacturer; only used or stock spare parts available in the market, no new OEM production.

• Reliability: Equipped with anti‑static and surge protection circuits, supporting long‑term continuous operation in industrial environments with a high mean time between failures (MTBF).

3. Installation and Replacement

1. Power Off and Lockout: Shut down the controller and disconnect all AC and DC power sources to avoid electric shock or equipment damage.

2. Locate Slot: Identify an empty standard 3U slot in the controller rack.

3. Insert Board: Align the edge connector of JANCD‑MM02 with the slot, then insert firmly until the connector is fully seated.

4. Secure Board: Fasten the board with two mounting screws to prevent loosening due to vibration.

5. Power On and Recognition: Restore power to the controller; the system will automatically detect and recognize the memory board.

6. Load Data: Load the system software or restore a backup via the controller’s menu interface after recognition.

4. Backup and Restore Procedures

• Backup: Use the teach pendant (for robots) or CNC operation menu to save all system and user data (including programs, parameters, and logs) to JANCD‑MM02.

• Restore: Boot the controller directly from the memory board or select the “Restore from Memory Board” option in the menu to recover data.

• Best Practice: Maintain redundant backups—one on JANCD‑MM02 and one on an external USB storage device—to prevent data loss.

5. Safety and Handling Precautions

• ESD Protection Mandatory: Always wear a grounded anti‑static wrist strap when handling the board to avoid static damage to electronic components.

• No Hot Plugging: Never insert or remove the board while the controller is powered on; this may damage the board or controller.

• Environmental Protection: Avoid exposure to static electricity, moisture, dust, and physical impact; store in a dry, clean environment when not in use.

• No Modification: Do not open, modify, or repair the board by unauthorized personnel; any tampering will void the warranty.

• Ventilation Maintenance: Keep the controller’s ventilation area unobstructed; clean dust annually to ensure heat dissipation and prevent overheating.

6. Compatibility Statement

7. Difference from MM01B/MM01C

• JANCD‑MM02: Legacy model, standard capacity, basic read/write speed, supports only older MRC/XRC controllers and early CNC systems; discontinued.

• JANCD‑MM01B: Mid‑range model, larger capacity than MM02, faster access, compatible with XRC/MRC robots and i80 CNC; limited stock.

• JANCD‑MM01C: Upgraded successor to MM01B, maximum capacity, fastest read/write speed, supports latest firmware and full i80/XRC/MRC compatibility; current mainstream replacement for legacy systems.