2. General Description (English)

• Purpose: Provides volatile (RAM) and non‑volatile (battery‑backed) memory for controller operation, program storage, and parameter backup.

• Form Factor: Plug‑in PCB for controller backplane（rack mount）.

• Key Feature: Battery‑backed memory to retain data during power‑off.

• Common Use: Replacement/upgrade for faulty memory boards in older Yaskawa robots and CNC machines.

3. Typical Specifications (English, from suppliers)

• Category: Industrial Control PCB / Memory Module

• Manufacturer Part No.: JANCD‑MM01C

• Weight: ~0.4–0.7 kg（approx.）

• Mounting: Backplane slot（no external wiring）

• Operating Temp.: 0°C to +40°C（non‑condensing）

• Backup Battery: Onboard lithium battery for data retention

4. Market Aliases（without numbers）

• JANCD‑MM series: Memory Board, Memory PCB, System Memory Card, CNC/Robot Memory Module

5. Compatibility Note

• Replaces: JANCD‑MM01B（older revision）

• Not compatible with DX100/DX200/YRC1000；use JANCD‑XIO / MMM series instead.