1. General Description

2. Basic Information

• Model: JANCD-MMM02

• Variants: MMM02-1E, MMM02-2E, Rev D22

• Manufacturer: Yaskawa Electric (Japan)

• Type: EPROM / CMOS RAM memory board

• Compatible systems: Motoman XRC, MRC robot controllers

• Dimensions: 4.5 × 0.5 × 3.0 in (11.4 × 1.3 × 7.6 cm)

• Weight: ~18 g

• Mounting: Stand-off (PCB slot)

3. Technical Specifications

• Memory: UV-EPROM + CMOS RAM (firmware + user data)

• Interface: XRC/MRC proprietary bus (plugs into CPU board)

• Power: 5 VDC (from controller backplane)

• Operating temperature: 0 °C to +40 °C

• Humidity: 5%–80% RH (non-condensing)

• Altitude: Up to 1,000 m

4. Key Functions

• Stores robot system firmware (EPROM) and user jobs/programs (RAM).

• Holds motion parameters, tool data, I/O configuration, system logs.

• Works with CPU board JANCD-MCP01 in XRC/MRC controllers.

• Non-volatile firmware (EPROM), volatile user data (RAM, no battery).

5. Compatibility

• Fits: Motoman XRC, MRC series (XRC platform).

• Does not fit: MM14/MM15/MM20/MM21, DX/FS series, or non-Yaskawa systems.

6. Installation & Safety

• Power off controller before insertion (no hot swap).

• Use ESD wristband; board is static-sensitive.

• Insert into dedicated CPU board slot, align connectors, seat firmly.

• Keep dry, dust-free; avoid shock and vibration.

7. MMM02 vs MMM01 vs MM21

• MMM02: XRC/MRC, EPROM+RAM, firmware + user data, no battery.

• MMM01: MRC/XRC, DRAM expansion, user data only, no battery.

• MM21: X3/MX3, battery-backed RAM, CNC/robot user data.