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First of all check Bit No.5 of parameter 3111. Bit No.5 of 3111 should be 1.

#5 OPM: Operating Monitor

0:Not Displayed

1:Displayed

#6 OPS: The speedometer on the operating monitor screen indicates:

0:Spindle motor speed

1:Spindle speed

First of all you have to press POS key to display the position display screen.

Then you have to press Right arrow key to go to Monitor Screen

When you press the Monitor key Servo load meter and Spindle load meter will be displayed on the screen.

In Servo load meter you can see load of servo axis i.e, X axis, Z axis or Y axis in VMC.

The load monitor screen on a FANUC 0i‑T series is significant because it gives real-time visibility of axis/spindle load, enabling early detection of abnormal cutting conditions, tool wear/breakage, and mechanical issues, while supporting adaptive process control and downtime reduction during production and setup.

What it shows

• Live percentage load for each servo axis and spindle derived from servo/spindle drive data, helping correlate motion with cutting forces during cycle and dry-run.
• Trend/graph style visualization on iHMI/PC variants of Cutting Load Monitor for quick spotting of spikes and drift over time.
• Recorded/logged load values when the optional Cutting Load Monitor is used, supporting post-mortem analysis of tool events.

Why it matters in production

• Tool breakage and wear detection: Reference a “good” cut to auto-generate thresholds; the control monitors subsequent cycles and flags abnormal increases or drops in load to prevent scrap.
• Cycle stability and quality: Operators can tune feeds, depths, and entry/exit moves while watching load to keep cutting within the tool’s safe envelope, improving surface finish and tool life.
• Early fault signals: Progressive load rise on an axis/spindle can reveal lubrication issues, bearing wear, chip packing, or fixture slippage before alarms stop the machine.

Setup and use cases

• Baseline learning: Perform a reference pass to let the Cutting Load Monitor learn normal load, then apply auto-generated conditions for mass production monitoring.
• Reaction strategy: On exceedance, trigger controlled responses via PMC/custom macro—feed hold, M00, light/alarm, or automatic tool change to a sister tool.
• Lathe and mill applicability: Effective on turning and machining centers; many shops on 0i‑TF use load alarms to protect inserts during roughing/parting and to detect drill/tap failure.

Benefits for maintainers

• Preventive maintenance insight: Load trends over identical paths highlight backlash, guideway friction, or spindle degradation without extra sensors.
• Faster troubleshooting: When paired with servo/drive diagnostics, the load monitor narrows hunt time by tying symptoms to axes/operations and exact timestamps.

Operator productivity

• Safer aggressive cutting: Confidently raise feedrates while watching real-time load rather than relying only on sound or chip color, reducing cycle time with protection.
• Setup and prove-out: During first-article runs, the screen gives immediate feedback to refine offsets, tool lengths, and entry moves before committing to unattended cycles.

Practical tips for 0i‑T users

• Keep thresholds tool-specific: Set separate limits for roughing vs finishing tools; small endmills need tighter bands than robust roughers.
• Use logging to improve CAM: Review load logs to smooth toolpaths, adjust stepovers, and eliminate spikes from abrupt direction changes or tool engagement jumps.
• Combine with alarms wisely: Pair load events with feed-hold and a message so operators know whether to change the tool, clear chips, or call maintenance.

Where it fits among screens

• Part of the control’s monitoring and diagnostic toolkit alongside operating/maintenance monitors and waveform/servo displays, with iHMI providing enhanced visualization and usability.

In short, the load monitor screen on FANUC 0i‑T,0i-M is a frontline safeguard for quality and uptime: it makes cutting forces visible, automates detection of abnormal conditions, and ties into the control/PMC for immediate, intelligent responses that protect tools, parts, and spindles.

Disclaimer: The blogs shared on CNC machines are created purely for *educational purposes*. Their intent is to help readers understand CNC controls, alarms, diagnostics, and general troubleshooting methods. We strictly avoid any copyright violations, and all explanations are written only for learning and knowledge-sharing.  These blogs should not be considered as official repair or service manuals. For detailed instructions, critical repairs, or advanced troubleshooting, it is always necessary to contact and work under the guidance of the respective *machine manufacturer* or *CNC controller support team*.  The content provided is focused only on *diagnosis and awareness*. We do not take responsibility for any kind of damage, error, or malfunction that may occur if someone directly applies the information shared here without proper technical supervision.#