Scale Warning Codes

MP72 Scanner Scale Integrator Guide

Scale Warning Codes

The following warning codes appear in the 7-segment display.

Scale Warning Codes
Warning Code	Warning Type	Description
U12	Scale Failed to Zero on Scale Zero Button Press	The scale failed to find a zero-weight reference when the Scale Zero button was pressed. The scale zeros if the weight on the platter is within +/- 2% of maximum weight measurement capacity and stable (no motion on the platter). The zeroing weight limit (0.6 lb / 0.3 kg by default) is configurable via the Maximum Scale Zeroing Weight Limit parameter in the MP72 Scanner Scale Barcode Programming Guide. If the operation fails, press the Scale Zero button to clear it.
U13	Scale Outside of Zero Drift Threshold	The zero reference drifted beyond 80% of the initial zero setting range of -5% to +15% (-0.9 lb to +3.9 lb / -0.4 kg to +1.9 kg) maximum weight measurement capacity, relative to the zero weight reference found at a no-load legal scale calibration. This indicates the scale will soon require re-calibration. It can possibly be cleared by scanning the Scale Reset parameter barcode, re-powering the scale, or leaving the scale on from a cold power start for more than 10 minutes. If this persists, re-calibrate the scale. This fault code occurs if a weight greater than 4.5 lb or 2.25 kg is left on the weighing surface while the scale starts from a reset or cold power start. Remove the weight to clear this. The fault code occurs if the scale resets or upon a cold reset of the MP72 system and the platter is not installed. Install the platter to clear this. Lowering the Initial Zero Setting maximum weight measurement capacity range of +15% (to as low as +2%) using the Maximum Initial Zero Setting Range parameter in the MP72 Scanner Scale Barcode Programming Guide also lowers the maximum Zero Drift warning range respectively, and may lead to more frequent nuisance U13 warnings, which can only be cleared by rebooting the MP72 system. If the U13 warning persists, raise the maximum Maximum Initial Zero Setting Range . If the U13 warning persists after reboot and this range is set to the default +15%, then it is not a nuisance annunciation and the scale requires re-calibration.
U14	Scale is Out of Calibration	The scale must be legally calibrated before it is operational. There are three possible reasons for this warning: The scale can no longer find a zero weight reference at power up after a weight is removed from the platter during normal operation or when pressing the Scale Zero button. The scale software does not remove the scale from calibration under these conditions if it was already legally calibrated. This is an obvious condition for troubleshooting. The Scale Display does not show a 0 (zero) reading from power-up or after pressing the Scale Zero button with no load on the platter. A new scale was installed in the MP72. A new MP72 shipped from the factory to an installation that requires calibration at the place of scale use.
U15	Scale Offline	An internal error in the MP72 scanner scale. In most cases, a Scale Communication Error U22 is reported before this error.
U22	Scale Communication Error	Communication failed between the MP72 scanner PCB and the scale device for one of three reasons: Circuitry on the MP72 scanner PCB failed. The internal cable between the scanner PCB and scale device is faulty. Internal circuitry on the scale device is faulty.
U23	Scale Display Communication Error	Communication failed between the MP72 PCB and the Scale Display for one of three reasons: The Scale Display configuration parameter is enabled, and no Scale Display is connected to the MP72 scanner/scale. Refer to the MP72 Scanner Scale Barcode Programming Guide for scale parameters. Display circuitry on the MP72 PCB failed. The Scale Display cable between the MP72 PCB and the Scale Display is faulty, or the internal circuitry of the Scale Display is faulty. The Scale Display and cable are a single Line Replaceable Assembly (FRU*). In most applications, p/n MX201-SR00004ZZWW can be ordered as a replacement.
U24	Scale Motion Fault	The scale detects constant motion on the weighing surface for an extended time. This latched fault requires powering off the MP72, fixing the problem, and powering on the MP72. There are one of three reasons for this fault: The scale was improperly installed or is mechanically bent or damaged where it cannot achieve a stable weight condition. The scale or the platter is pressed against a fixed object, inhibiting its free motion. Debris is lodged under one or more of the over-travel stop screws. If this occurs, the recommendation in most cases is to remove and re-seat the scale. Replace the scale if the condition persists.