11m Parameter List — Fanuc

When your Fanuc 11M alarms, the parameter list is often the cure.

Alarm 401 – Servo Alarm (VRDY off)

Alarm 510 / 511 – Over Travel (Soft limit)

Alarm 000 – Power off/Power on required

Alarm 910 – DRAM Parity (System Error)

Related to tool length compensation (G43/G44) and cutter compensation (G41/G42). fanuc 11m parameter list

| Parameter # | Description | | :--- | :--- | | 0600 | Tool Offset Memory Type.
Bit setting determining the number of tool offsets available (e.g., 16, 32, or 99 offsets). | | 0601 | Tool Offset Geometry/Wear.
0 = Geometry and Wear pairs; 1 = Single offset value. | | 0610 | Cutter Compensation Mode.
Bit settings for how the control handles tool nose radius compensation (Type C or Type A). |

Crucial for the electrical tuning of the axis motors.

| Parameter # | Description | | :--- | :--- | | 1000 - 1002 | Inferred Position Detection.
Used for reference point return detection (grid shift). | | 1800 - 1802 | Servo Loop Gain.
Adjusts the stiffness of the servo. Standard is usually around 2000-3000. If this is set wrong, the servo will oscillate or alarm. | | 1803 - 1805 | Motor ID Code.
Identifies the specific Fanuc servo motor model (e.g., Model 10, Model 20, etc.) connected to the axis. | | 1850 - 1852 | Order 1 Servo Parameter.
Often related to velocity loop gain. | | 1890 - 1892 | Order 2 Servo Parameter.
Position loop gain constants. |

The Fanuc 11M parameter list is more than a technical reference—it is the digital DNA of your machine tool. Whether you are a shop owner, a maintenance technician, or a home shop machinist running vintage iron, your ability to find, interpret, and restore these parameters determines the longevity of your investment.

Do not wait for the battery alarm. Find your machine’s original parameter booklet or download a community-sourced list today. Punch them out to a PC. Write them down in a notebook. Do all three. The peace of mind knowing you can resurrect a "dead" Fanuc 11M in 20 minutes rather than 20 days is invaluable. When your Fanuc 11M alarms, the parameter list

Next Steps:

Your old Fanuc 11M, with its parameters safe, will easily outlast many newer Chinese controls. Keep that list close.

Have a specific parameter question for the Fanuc 11M? Leave a comment on our forum or contact a certified Fanuc repair center. Do not experiment with servo parameters without a full backup—you can cause axis crashes.

(and its 10M/12M siblings) uses a specific architecture for parameters, often requiring a "Parameter Write Enable" (PWE) toggle before changes can be made . Because these controls are vintage, a full list includes essential communication, axis, and option parameters. 1. Critical Access Procedure (Enabling PWE)

To modify any parameters, you must first enable write access: Mode: Select MDI mode . Screen: Press the SETTING soft key . Alarm 510 / 511 – Over Travel (Soft limit)

Parameter 8000: Navigate to parameter 8000. Set bit #0 (PWE) to 1 .

Alarm: A P/S 100 (Parameter Write Enable) alarm will appear; this is normal and expected while editing . 2. Common Communication Parameters (RS-232)

Used for connecting the CNC to a PC for program transfers . 5110: Device Type (usually 1 or 3 for standard RS-232) . 5111: Stop Bits . 5112: Baud Rate. 3. Essential Axis & Performance Parameters 1420: Rapid Traverse Rate for each axis . 1825: Servo Gain (Position loop gain) .

1826: Gain Multiplier (specifically important for avoiding LSI overflow errors) . 1829: Position Error (Stationary) limit . 3741–3743: Maximum Spindle Speed settings . 4. Option & System Parameters Fanuc 10M-11M Communications Parameters - Squarespace

Parameter 5111: Stop Bits (This has to match the PC that you are communicating with.) Specified. number. Stop Bit. Squarespace MME for Fanuc - Manual - Memex Inc.

The Fanuc 11M (a classic CNC control from the mid-1980s) uses a parameter system that is more advanced than the 6M but less structured than the 0-series or 16/18 series. The "feature" of its parameter list is that parameters are primarily 4-digit numbers (0000 to 9999, though many are unused), organized into four distinct functional groups.

Here is the feature breakdown of the Fanuc 11M parameter list: