Fanuc 11m Parameter List

The Fanuc 11M is a classic CNC control system widely used in milling machines. To optimize performance or perform maintenance, understanding the Fanuc 11M parameter list is essential. These parameters control everything from basic machine identity to complex servo and spindle behaviors. How to Access and Enable Parameter Editing

Before you can modify most parameters, you must enable "Parameter Write."

Select MDI Mode: Ensure the machine is in Manual Data Input mode.

Enable PWE: Push the SETTING soft key, find parameter 8000, and set bit #0 (PWE) to 1. A "Parameter Write Enable" alarm will appear; this is normal and expected.

Navigate to Parameters: Press the SERVICE soft key followed by the PARAM soft key to view the list. Fanuc 11M Parameter Categories

The Fanuc 11M organizes thousands of settings into specific numerical ranges. 1. General System and Communication (0000–5112)

These parameters manage the basic interface and RS-232 communication settings for DNC or program transfers. 0000: Basic settings like ISO/EIA code selection.

5110: Device type (e.g., 1 or 3 for standard RS-232 devices). 5111: Stop bits (typically set to 1 or 2). 5112: Baud rate (e.g., 10 for 4800, 11 for 9600). 2. Servo and Axis Control (1000–2500)

Controls the physical movement of the axes, including travel limits and reference points. 1241: Coordinate value of the 2nd reference point. 1242: Coordinate value of the 3rd reference point.

1825–1830: Servo loop gain and error limits (often checked during servo alarms). 3. Spindle and Tool Settings (5600–6000)

These settings manage the main spindle motor and tool offsets. fanuc 11m parameter list

5600+: Parameters related to spindle orientation and analog/binary outputs. 6000+: Tool offset and compensation settings. 4. Canned Cycles and Macros (6200–7000) Configurations for automated machining routines. 6200: Canned cycle parameters (drilling, tapping, etc.). 7000: Custom macro variables and settings. 5. Option Parameters (9100–9125)

These define which software features are enabled on the control. FANUC Second Reference Point - CNCmakers

Note: The CNC will trigger a P/S alarm 100 once PWE is active; this is normal and expected. RS232 Communication Settings (DNC/PC Link)

These settings are critical for transferring programs via a serial cable. FactoryWiz Monitoring Description Set bit #0 to Device selection (typically port 1) Device type (DC codes used) Stop bits (usually 1 or 2) 9, 10, or 11 : 9 = 2400, 10 = 4800, 11 = 9600 Common 900-Series Option Parameters

These parameters enable specific software features. Exercise extreme caution, as these vary by machine manufacturer. 9101 bit 0 : Single Direction Positioning. 9102 bit 0 : G10 Program Input of Offset. 9102 bit 1 : Inch/Metric Conversion. 9110 bit 1 : 200 Programs Memory. 9111 bit 0 : Custom Macro B. 9111 bit 2 : Rigid Tapping. 9116 bit 0 : Part Counter. Maintenance & Servo Basics Backlash Compensation

: Typically found in the 1800-2000 range, though specific values like

are often used for absolute encoder setup (Bit #5 = 1 for absolute). Soft Overtravel

: Suppress alarms by setting limits to maximum values in parameters (positive) or (negative). Spindle Orientation : Parameter is used to adjust the tool-change position. backup your parameters

before making changes. You can do this by selecting EDIT mode, pressing the key, and using the FactoryWiz Monitoring wiring diagram

for the RS232 cable to connect your Fanuc 11M to a modern PC? Fanuc 11M Configuration Document - FactoryWiz The Fanuc 11M is a classic CNC control

The Fanuc 11M parameter list contains thousands of settings that control everything from basic machine axes to complex communication protocols. Because a full list is too large to display here, the most critical "common" parameters are categorized below. Critical Setup Parameters

0000–0030 (Setting Parameters): These include PWE (Parameter Write Enable), which must be set to 1 to change any other parameters. You can find instructions on enabling PWE on MachineMetrics.

1000–1100 (Axis Control): These define the number of axes, axis names (X, Y, Z), and whether an axis is linear or rotary.

1240–1241 (Reference Points): These store the machine coordinate values for the first and second reference points (Home positions). CNCMakers notes that 1240 is for the first point and 1241 for the second. I/O and Communication (RS-232)

To transfer programs, these parameters must match your PC settings:

5001: I/O device selection (0 for RS-232, 1 for Bubble Memory). 5110: Device type (usually set to 3). 5111: Stop bits (typically 2). 5112: Baud rate (e.g., 10 for 4800, 11 for 9600). Spindle and Tooling

3741–3743: These parameters set the maximum spindle speeds for different gear ranges. According to CNCMakers, you can modify these directly to limit RPM.

6700–6710: Used for part counting. Setting 6700#0 to 0 enables counting on M30/M02, as detailed by FactoryWiz. Diagnostic Monitoring

If the machine errors out, check the Diagnostics screen (DGN):

DGN 720: Indicates an overload (OVL) alarm. KFASLLC explains this often points to thermal issues or broken cables. Important Note on Backups Practical note: Fanuc often stores multiple tuning sets

The Fanuc 11M uses a battery to maintain these parameters. If the battery dies while the power is off, all parameters are lost. It is highly recommended to print a hard copy of your specific machine's parameter list or save it to a PC via RS-232.

Are you trying to fix a specific alarm or set up a new communication link?

C. Servo & drive related

Servo tuning slots: P/I/D gains, velocity/feedforward coefficients, notch filters.
Servo alarm limits: following error thresholds, over-travel detection.
Servo filter and smoothing coefficients.
Acceleration/deceleration (jerk-limited profiles may be present in firmware).

Practical note: Fanuc often stores multiple tuning sets per axis (slot 1, slot 2 …). Changing these affects dynamic response; tune methodically with appropriate tools (oscilloscope, response monitor).

3.5 Axis Inversion & Polarity

| Param | Bit | Function | | :--- | :--- | :--- | | 0060 | Bit 0 (X) | 0 = Normal, 1 = Reverse direction (X) | | 0060 | Bit 1 (Y) | Reverse direction (Y) | | 0060 | Bit 2 (Z) | Reverse direction (Z) |

4. Common Bit-Structured Parameters (examples)

Parameter 0001 (RS-232 settings)

Bit 0: Stop bits (0=1, 1=2)
Bit 1–2: Baud rate (00=4800, 01=9600, 10=19200)
Bit 3: Parity (0=even, 1=odd)

Parameter 0012 (Axis configuration)

Bit 0–3: Number of controlled axes (e.g., 0011 = 3 axes)
Bit 4: X direction (+/-)

Parameter 8000 (Parameter write protect)

Bit 0: PWE (0=locked, 1=unlocked)
Bit 7: Enable 9000-series parameters

Critical Parameters Every Fanuc 11M User Must Know

While you need the full list, these "master" parameters are the most commonly corrupted or changed. Have these written down on a piece of tape inside your electrical cabinet.