FANUC CNC Parameter Backup Guide ｜ REACO CNC

Method 1: Backup via CF Card or USB

Applicable systems: Newer FANUC systems, like 0i-TD, 0i-MD, 0i-TF, 0i-MF, 0i-TF-PLUS, 0i-MF-PLUS, 30I-B, 30I-B PLUS, 31I-B5, 31I-B5 PLUS, 31I-B, 31I-B PLUS, 32I-B, 32I-B PLUS, 35I-B, etc.

Steps：

1. Prepare a CF card or USB storage device and insert it into the corresponding slot on the CNC controller (usually on the side).
2. Power on and enter the BOOT screen (usually press the two right-side buttons at startup to enter BOOT).
3. In the BOOT screen, press [DOWN] to move to [SRAM DATA UTILITY] (Parameter Backup).
4. Choose SRAM BACKUP (CNC to MEMORY CARD).
5. When the message “SRAM BACKUP COMPLETE” appears, the parameter backup is successful.

Method 2: Backup via RS-232 Serial Connection to PC

Applicable systems: Older systems or systems without card slots like: 0-A series

Steps:

1. Prepare an RS-232 serial cable and a PC.
2. Install DNC transfer software on the PC and configure the correct COM port and transfer parameters (baud rate, data bits, stop bits, etc.).
3. Machine side setup:
   • Enter MDI mode and set Parameter Write Enable (PWE) to 1.
   • Press the SYSTEM key and navigate to the PARAM or PMC interface.
   • Press the right arrow to locate PUNCH or OUTPUT and execute the output command.
4. PC side receiving:
   • Select receive mode in the DNC software and start receiving.
   •  After executing the output on the machine, the PC will receive and save the parameter file.

 Method 3: Manual Recording of Parameters

When to use:

For parameters that cannot be backed up electronically, this is a primitive but reliable method.

Steps:

1. Navigate to SYSTEM → PARAM or PMC → PMCPRM, and manually record all parameters page by page.
2. Pay attention to details: record all critical data including PMC parameters, pitch compensation, and variables.
3. Verify the recorded parameters to avoid mistakes.

Important Tips

• Backup All Data:
  In addition to CNC parameters, back up PMC programs, macro variables, tool offsets, and other important data.
  Related link: Fanuc All Data Backup Guide
•  Regular Backup:
  Backup before major machine changes or regularly to prevent data loss.
• Store Backup Files:
  Store backups properly, ideally in multiple locations, and label with date and machine info.

Other Articles

Related Articles

Here are some related technical resources you may also find helpful:

• How to backup All data
• How to solve FANUC 5523/5524 alarm
• Common FANUC CNC Alarms Classification
• FANUC Common Over Travel Alarm List
• FANUC G/ M Code for a Machining Center
• FANUC G/ M Code for lathe

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