Bystronic Laser Error Code List

⚠️ Warning: Never clear a laser source error (E-10xx series) without understanding the cause – especially dew point or back reflection, as these can destroy the fiber laser.


Navigating Bystronic laser error codes usually starts at the machine's ByVision control interface. While the specific list of codes can vary based on your machine's generation (e.g., ByStar, BySmart, or older CNC97 systems), most errors fall into predictable categories like power, cooling, or the cutting head. Common Bystronic Error Categories Likely Causes W-Axis Warning

Often caused by a dirty cutting head, moisture on the contact print, or cracked ceramics. Power Supply (200-range)

Common codes include 202, 234, or 367, typically indicating a failure in the main power unit or a 24V/230V fuse. Water Flow / Chiller

Errors like 323 often relate to low water flow or temperature alarms, which automatically shut down high pressure to protect the laser. Laser Head / Flashlamp

Codes 246 or 249 indicate the flashlamp isn't starting, which may require a replacement. Emergency Stops

Code 700200 generally confirms an emergency stop button has been pressed. How to Access the Full List on Your Machine

Bystronic provides built-in documentation through the ByVision interface so you don't have to carry a paper manual:

F1 Key: Pressing this on the control panel opens a help page relevant to the current view or any active system message.

Online Help: The user interface includes a scaled window that displays descriptions for specific system messages and parameters.

Message List: Navigating to the "Messages" or "Logging" tab (often under Modules) provides a history of MMC and CNC error logs. Initial Troubleshooting Steps

Check Fuses: For general electrical errors, verify the 24V and 230V fuses. If one has tripped, press RESET after replacing it.

Clean the Cutting Head: Many axis and quality errors are resolved simply by cleaning the nozzle holder and ceramics with alcohol.

Reset Procedures: For limit alarms (like Z-axis), try disconnecting the power for 5–10 minutes to allow the system to clear its memory before homing to "0".

For more specific or persistent codes, you can access manuals and troubleshooting guides through Bystronic's Service Portal or use the myBystronic app for proactive support.

Are you seeing a specific numeric code on your display right now? ByVision User Manual for Waterjet Machines | PDF - Scribd


Below is a curated Bystronic laser error code list with real-world explanations. Note that firmware versions vary slightly; always verify with your machine’s ByVision or BySoft interface.

Prevention is cheaper than repair. Use this checklist based on the error list above:


These errors are common in both Fiber and CO2 machines, specifically regarding the cutting head (ByAutonom, Precitec, or Raytools).

| Code / ID | Description | Probable Cause & Solution | | :--- | :--- | :--- | | H200 | Focus Position Error | The Z-axis cannot find the focal point. The focusing lens may be loose, or the capacitance sensing is failing. Clean the lens and check the Z-axis drive. | | H210 | No Signal from Head | Communication lost between the cutting head sensor and the CNC. Check the fiber optic cable (for sensor data) or the serial connection. | | H300 | Crash / Collision | The cutting head hit the material or the slats. Check for tip damage. Recalibrate the head. | | H405 | Capacitive Sensor Drift | The height control system is drifting. Perform a "Sensor Calibration" or "Zero Set" on the head. | | Lens Temp High | Overheating Optics | Cooling water flow to the cutting head is restricted, or the lens is

Bystronic laser error codes typically range from informational alerts to critical alarms. On modern systems using ByVision, these messages are often categorized into CNC Messages (confirmations, errors, status, emergency stops) and MMC Messages.

Below is a categorized list of common Bystronic laser error codes and messages found in technical documentation and service guides. Common System Alarms & Safety Errors bystronic laser error code list

These codes usually require an immediate reset or inspection of safety components to resume operation.

700102: 24V Fuse Error. General power failure in the 24V control circuit.

700103: 230V Fuse Error. Issue with the main power supply or specific high-voltage fuse.

701040: Light Barrier Safety Error. The safety light curtain or laser barrier has been breached or is misaligned.

700850: RESET!. General system prompt indicating a fault has occurred that requires a manual reset before the machine can continue. Laser Source & Optical Errors

These errors relate to the generation and delivery of the laser beam.

00201: Voltage Module/Power Supply Error. The voltage is too high or too low. Requires checking contacts in the laser head or cooling system.

00202: Overtemperature/Signal Cable. Possible broken cable between the ACC and the laser heat switches.

00204: General Beam Source Error. Indicates a serious fault in the RF circuit or internal switch, often triggered by overtemperature (>60 °C).

700632 – 700636: Mirror Not Closed. Specific errors for Z, Y, or X-axis mirrors indicating the protective covers or the mirrors themselves are not in the correct position.

700637: Light Path Safety Deactive. Warning that the beam path safety interlocks are not engaged. Motion & Mechanical Faults

These relate to the movement of the cutting head, tables, and conveyor systems. 700248: Loading system is not in the safe home position. 700738: Conveyor motor thermal protection tripped.

700834: Nozzle distance control lost or collision with sheet metal.

701033 & 701034: Drive or brake error on the exchange table system. Maintenance & Status Alerts

General alerts regarding lubrication (700532–700536) or filter status (700739) may appear. Laser Error Codes for QMark & Icemark | PDF - Scribd

Bystronic laser error codes vary significantly depending on whether you are using the older MMC/CNC systems or the modern ByVision software. While a single universal list is not publicly released as a static document, the following are common error codes and troubleshooting themes found in service manuals and technician guides: Common Error Codes & Meanings

These codes often appear across various Bystronic laser models:

Error 68 & 69: Power supply issue; typically indicates the unit needs service or replacement. Error 73: Broken wire detected in the system circuit.

Error 81: CPU internal fault; may require diagnosis or hardware replacement.

Error 83: System software/firmware version is outdated and requires an upgrade.

W-Axis Warning: Often caused by a dirty cutting head or moisture/oil in the capacitive sensor assembly. ⚠️ Warning: Never clear a laser source error

Bypos Error: Related to the bypass pressure sensor; can sometimes be reset by unplugging the sensor for 20 seconds. System-Specific Errors Bystronic Bystar 3015 shutter error - Eng-Tips

Understanding Your Bystronic Laser: A Guide to Common Error Codes Running a high-performance

laser system is all about precision and uptime. But when an error code flashes on the screen, production grinds to a halt. Deciphering these codes quickly is the difference between a five-minute fix and hours of lost productivity.

Below is a breakdown of common Bystronic error categories and the specific codes that frequently trip up operators. 1. The 200-Series: Power and Laser Head Issues

The 200-series codes typically point toward the heart of the machine—the power supply and the laser head assembly. All States M.E.D. Error 202 / 234 – Power Supply Fault:

These often indicate an interruption or failure in the High Voltage (HV) power supply. Error 246 / 249 – Laser Head/Flashlamp:

This suggests the flashlamp is failing to start, which can be caused by aging lamps or a faulty ignitor board. Error 200 – Laser Not Ready:

A general "not ready" state often caused by a faulty RF PSU or cable signal issues between the source and the control. 2. Motion and Axis Errors

These codes generally appear when the machine's physical movement is obstructed or the sensors detect a mismatch in position. "Drives Not Ready": Often occurs after a head collision . A common first step is to perform a from the administrator menu. W-Axis Frequency Error:

A common issue on older Bystar models. This is typically caused by dirt, water in the D-sub connector, or a faulty sensor PCB in the cutting head. 700534 / 700535 – Lubrication/Oil Level:

Specifically refers to low oil levels in the X1, X2, or Y axes. Checking the lubrication switch and refilling the reservoir usually clears these. 3. Cooling and Environmental Alarms

Laser cutting generates immense heat; if the cooling system fails, the laser will shut down to prevent permanent damage. Wewinlaser Laser Error Codes & Fault Codes - All States M.E.D.

To access a full list of error codes for Bystronic laser machines, you should Online Help

integrated into the machine's control software or contact official support

. Bystronic typically categorizes messages into categories like warnings, interruptions, and emergency stops. Accessing Error Codes on the Machine The most accurate guide is built into your control system:

: Pressing F1 on the control panel opens the relevant help page for the active view or dialog box. System Message Help

: In the ByVision interface, you can show or hide descriptions for specific system messages or parameters directly from the display window. Common Machine Faults and Solutions

While specific codes vary by model (e.g., BySprint, Bystar), common high-level issues include: 700511 - N2 Input Pressure Insufficient : Nitrogen gas pressure is below required levels. 700834 - Nozzle Distance Control : The nozzle has contacted the sheet metal. 700739 - Dust Filter General Error : Check the dust filter unit for blockages or malfunctions. 700637 - Light Path Safety Deactive

: The beam path safety is closed; mirrors may need adjustment. Drives Not Ready : This often occurs after a head collision. Attempt a CNC Reset/Restart from the administrator menu. Official Resources for Fault Reporting

If the internal help system does not resolve the issue, you can find specific documentation or report faults through these channels: Bystronic Fault Report Bystronic Global Fault Reporting portal to submit specific error codes and symptoms. myBystronic

: Registered users can access machine-specific documentation, spare parts catalogs, and manual downloads through the myBystronic customer portal What is the exact error code appearing on your machine's display? Report a fault - Bystronic Navigating Bystronic laser error codes usually starts at

Bystronic laser systems are known for their precision and reliability, but like any sophisticated CNC machinery, they occasionally trigger error codes to protect the hardware and the operator. Understanding these codes is the first step toward reducing downtime and maintaining peak performance. Decoding the Bystronic Error Logic

Bystronic error codes generally appear on the ByVision or MMC interface. They are often categorized by the specific subsystem they affect. Most codes consist of a numerical string accompanied by a brief text description. These typically fall into three main categories:

Motion and Drive Errors: These relate to the X, Y, and Z axes, including motor overloads, positioning errors, or limit switch activations.Laser Source and Resonator Errors: These involve gas pressure, cooling water temperature, vacuum levels, or discharge issues within the resonator.Process and Parameter Errors: These occur when the cutting parameters, such as gas pressure or focal position, deviate from the programmed requirements. Common Bystronic Laser Error Codes

While a full list contains thousands of entries specific to your machine's generation (CO2 vs. Fiber), several codes appear more frequently across the board. Resonator and Vacuum Issues

Error 4010 - Vacuum Pump Fault: This often indicates that the vacuum pump has failed to reach the required pressure within the allotted time. Check for leaks in the gas lines or worn pump vanes.Error 4205 - Gas Pressure Low: The system isn't receiving enough lasing gas. Verify your gas bottles are full and the regulators are set correctly.Error 4500 - Discharge Failure: A common CO2 laser error. It suggests an issue with the high-voltage power supply or the electrode cooling system. Cooling and Thermal Errors

Error 5002 - Chiller Temperature High: The cooling water has exceeded its safe operating temperature. This is frequently caused by a clogged chiller filter or low coolant levels.Error 5120 - Water Flow Rate Low: There isn't enough water circulating through the cutting head or resonator. Inspect the hoses for kinks and the pump for proper operation. Motion and Head Errors

Error 2015 - Axis Limit Switch Reached: The machine tried to move beyond its physical boundaries. This usually requires a manual reset and a check of the nesting layout.Error 3055 - Nozzle Contact: The capacitive sensor has detected that the nozzle touched the sheet metal. Check for tipped parts or incorrect focus height.Error 3100 - Focal Position Error: The motorized lens adjustment is stuck or unable to reach the commanded position. This may require cleaning the drive mechanism. Troubleshooting Steps

When an error code appears, follow this systematic approach to get back to production:

Record the Exact Code: Note the number and the accompanying text.

Clear the Area: Ensure the cutting head is clear of obstructions before attempting a reset.

Check the "Info" Button: Many Bystronic interfaces have an "i" or info icon next to the error that provides specific troubleshooting suggestions.

Perform a Cold Start: If the error is a software glitch, restarting the control system can often clear persistent "ghost" errors.

Inspect Consumables: Many process errors are simply caused by a dirty lens, a worn nozzle, or a contaminated ceramic ring. When to Call a Technician

If you encounter errors related to the internal optics, high-voltage cabinets, or turbine failure, it is best to contact Bystronic technical support. Attempting to repair these components without specialized training can lead to expensive damage or serious injury. Regular preventative maintenance is the best way to keep your error log empty and your machine running at 100% capacity.

Here’s a useful structured post for Bystronic laser error code list — focused on common fault codes, possible causes, and quick corrective actions.

⚠️ Note: Exact codes vary by Bystronic model (e.g., Bystar, BySprint, BySpeed, BySmart, ByCut Star). Always refer to your machine’s official manual.


Piercing and cutting rely on precise gas delivery.

| Error Code | Description | Likely Cause | Immediate Fix | | :--- | :--- | :--- | :--- | | E-5002 | Assist gas pressure too high | Regulator stuck open | Tap the regulator. Cycle the solenoid valve manually. | | W-5010 | Low nitrogen pressure | Bulk tank low or vaporization rate too high | Change tank. Add vaporizer (for liquid N2). | | E-5045 | Gas mixing valve fault (O2/N2 blend) | Servo motor feedback error | Calibrate the gas mixer via software. | | E-5100 | Central pneumatic pressure < 6 bar | Shop air compressor offline | Reset shop compressor. Check main filter water trap. |

Bystronic continuously updates firmware. If you see a code not in this list (e.g., E-7889 specific to a ByStar 4020):

When you encounter an unknown code not listed in any Bystronic laser error code list you have, follow this SOP: