Address
宁波研发园A区2栋12B17
聚贤街道,鄞州区,宁波市,浙江中国
Work Hours
周一 to 周五: 8:30AM - 10:30PM
周六 to 周日: 9:30AM - 10:30PM
Data source: Renishaw product technical specification manual, Marposs MIDA programming manual, Blum Novotest product knowledge base, official technical materials of various brands
Document version: V1.0
Applicable: Renishaw OMP/RPM/OTS/RTS/TS27R series, Marposs VOP/WRP/T25 series, Bolong TC/ZX Speed/LC series probe and tool setter
Compilation unit: Technical Department of Ningbo Jiangce Technology Co., Ltd.
Release date: June 20, 2026
CNC probe and tool setter alarm code/indicator light status quick check table (Renishaw Marbos Bolong)
1、 Quick Check Table Usage Instructions
When troubleshooting on site, the LED indicator light of the probe is usually the fastest diagnostic entry point. Different brands and models of indicator lights correspond to different fault states in terms of color and flashing mode. This article is divided into chapters according to the brand, organized in a structure ofindicator light status → fault cause → solutionfor easy on-site comparison.
General observation skills:When observing LEDs, pay attention to distinguishing between modes such as “constant light”, “slow flashing”, “flash”, “flash first and then turn off”.. Sometimes it is necessary to observe at the moment when the probe is triggered, and some indicator lights only light up during the measurement process.
2、 Renishaw series
2.1 OMP40-2/OMP60 workpiece probe
OMP40-2 and OMP60 are the most widely used optical triggered workpiece probes by Renishaw. Both are equipped with dual color LEDs (green/red) to indicate the working status.
2.1.1 Normal state indication
| LED status | meaning | explanation |
|---|---|---|
| Green constantly on | The probe is ready and in standby mode | The battery is normal and communication is normal |
| Green flashing (slow speed) | The probe is being triggered (measurement is in progress) | The measuring needle touches the surface of the workpiece |
| Green flashing (fast) | The probe is searching for receiver signals | Appears after turning on or leaving the receiver range |
| Green off | The probe enters sleep and power-saving mode | Automatically enter after a period of standby time |
2.1.2 Fault status indication
| LED status | cause of failure | Troubleshooting steps |
|---|---|---|
| Red constant light(When turned on) | The battery level is low and needs to be replaced | ① Measure battery voltage (normal 3.2-3.6V) ② Replace the battery and retest |
| Red flashing(2 times/second) | Probe module malfunction | ① Check if the measuring needle is locked tightly ② Check if the sealing ring is intact ③ Contact for maintenance |
| Red flashing(4 times/second) | The internal optical module of the probe is not aligned | ① Check if the measuring needle is bent ② Check if the measuring rod seat is loose ③ Recalibrate is required |
| The light does not turn on when turned on | Battery depletion or electrical malfunction | ① Replace the battery with a brand new one ② Check the battery compartment contacts for peroxidation ③ If it still does not light up, send it for repair |
| Normal triggering but no signal to CNC | Receiver malfunction or obstruction | ① Check if there is any obstruction in the optical path ② Check the power supply of the receiver ③ Re pair the light |
OMP40-2 specific:The green LED flashes twice before turning off → indicates that the probe has started self checking and passed, which is a normal phenomenon..
OMP60 specific:The red LED occasionally flashes in areas of weak signal → The probe has exceeded the effective range of the optical receiver (typical maximum range of 6m), adjust the probe orientation to restore normal operation..
2.1.3 Quick check of battery voltage comparison
| Voltage Range | status | Remaining standby days (OMP40-2) |
|---|---|---|
| 3.40-3.60V | fully charged | About 1500 days |
| 3.20-3.40V | normal | About 600-1200 days |
| 3.00-3.20V | low | About 100-500 days |
| 2.80-3.00V | alert | Suggest replacing as soon as possible |
| < 2.80V | exhaust | The LED is always red and needs to be replaced immediately |
2.2 RMP40/RMP60 Radio Probe
The wireless probe uses FHSS frequency hopping transmission (2.4GHz) with a maximum communication distance of 15m. It has an additional wireless pairing indicator light mode compared to optical probes.
| LED status | meaning | handle |
|---|---|---|
| Green slow flashing | Normal standby, wireless link established | normal operation |
| Green Flash | Searching for Radio Receiver (RMI-QE) | Check the power supply of the receiver |
| flashing red | Wireless pairing lost | Re execute pairing program |
| Red/green flashing alternately | Firmware upgrade mode | Use Renishaw upgrade tool |
| Red flash (when triggered) | Radio interference or ID conflict | Check the IDs of other wireless probes in the same workshop |
RMP pairing process: When the LED flashes red (pairing lost), a new radio pairing is required. The usual steps are: turn off the power of the receiver → press the receiver pairing button and power it back on at the same time → the receiver enters pairing mode → trigger the probe to complete pairing.
2.3 OTS/RTS tool setter
The unidirectional repeatability accuracy of OTS (optical) and RTS (wireless) tool presetters is 1.00 μ m2 σ.
| LED status | OTS meaning | Meaning of RTS |
|---|---|---|
| Green constantly on | The tool presetter is in standby mode, and the optical link is normal | Standby, wireless link is normal |
| Green flashing | The tool presetter is measuring | Measuring in progress |
| Red always on | Low battery | Low battery |
| flashing red | internal fault | Wireless pairing lost |
| No light | Battery depletion/sleep mode | battery exhausted |
2.4 TS27R Hard Wire Tool Alignment Instrument
TS27R is a hard wired (cable) connection and does not have a built-in battery, therefore there are no battery related alarms. Its working status is determined by the interface module (MI 8-4/HSI) indicator lights on the CNC system side:
| Interface module LED | meaning | handle |
|---|---|---|
| Green constantly on | The system power supply is normal, and the tool setter is in standby mode | normal |
| The light is on when the signal is triggered | Probe triggered normally | Measurement in progress |
| Red always on | Interface module malfunction or short circuit in the circuit | Check cables and interfaces |
| No light | power outage | Check the 24V power supply and wiring |
3、 Marpos series
3.1 VOP40/VOP60 Optical Probe
Marposs VOP40 and VOP60 are optical triggered workpiece probes that are benchmarked against the Renishaw OMP40-2/OMP60 system.
| LED status | meaning | Troubleshooting steps |
|---|---|---|
| Green constantly on | Probe standby, optical link normal | normal operation |
| Green flashing | Measurement triggered | Measurement is proceeding normally |
| Red is always on | Low battery level | Replace the battery (with the same specification as Renishaw OMP40-2, half AA/AA lithium thionyl chloride) |
| Red flashing (slow) | Probe startup failed or self-test failed | ① Check the polarity of the battery installation ② Remove the battery and retry after 30 seconds ③ Check the sealing |
| Red flashing (fast) | Internal optical malfunction | ① Check the measuring needle and sealing ring, clean the optical window, and send it for repair |
| yellow flashing | Pairing Mode | When a new battery is first installed or re paired with the receiver |
| No light (when triggered) | Optical link interruption | ① Check the power supply of the receiver (E32U/VOS) ② Check if there is any obstruction in the optical path ③ Re pair |
Note: The LED definitions for VOP40 and VOP40P (enhanced) are the same.. VOP40P adds high-pressure air blowing and cleaning function, and its blowing system failure will not cause the probe LED to report errors, but it will affect the measurement accuracy.
3.2 WRP45P/WRP60P Radio Probe
The Marposs WRP series uses MUPS (Ultra Wideband UWB 6.2-8.3GHz) transmission technology, which is more anti-interference than traditional 2.4GHz radio systems.
| LED status | meaning | Troubleshooting steps |
|---|---|---|
| Green constantly on | System ready, UWB link established | normal operation |
| Green flashing | Probe triggering in progress | Measurement is normal |
| Red always on | Low battery voltage | Replace battery (WRP45P: 2 × CR2/WRP60P: 2 × CR123A) |
| Red flashing (2 times/second) | UWB communication interruption or disconnection | ① Check the power supply of the receiver ② Check if the probe exceeds the 15m range ③ Re pair |
| Red flash and then turn off | Communication channel conflict | Check if there are other MUPS systems occupying the same channel in the workshop |
| Yellow is always bright | Probe charging/firmware update | Waiting to be completed |
Multi probe configuration note:The Marposs MUPS system supports up to 8 probes per receiver.. If multiple WRP probes are used simultaneously in the workshop, it is necessary to ensure that each probe ID is unique.
3.3 T25/TL25 Hardwire Probe
The Marposs T25 series is hard wired (with E32U interface) and does not have a built-in battery. Its status is indicated through the interface module:
| Interface module status | meaning | troubleshoot |
|---|---|---|
| Green constantly on | Power supply is normal, probe is in standby mode | normal |
| Trigger signal output is normal | Measurement is normal | Check the CNC side I/O signal |
| No signal output but normal probe | E32U parameter configuration error | Check the trigger threshold and filtering time settings of the E32U interface module |
| Frequent false triggering of signals | Poor cable shielding or grounding | ① Check the grounding of the cable shielding layer ② Check the distance from the power cable |
3.4 MIDA system alarm codes
The macro program of the Marposs MIDA system will return an error status code through specific macro variables during execution. When the workpiece measurement program is running, the macro variable# 149 (Fanuc system) will return the following state:
| MIDA code value | meaning | handle |
|---|---|---|
| 0 | Measurement successful | normal |
| 1 | The probe did not trigger within the specified travel range | ① Check if the probe is damaged ② Check the approach speed and feed rate ③ Increase the search range or slow down the measurement speed |
| 2 | The measuring needle did not return to the preset position | ① Check if the measuring needle is bent or damaged ② Check the locking nut of the measuring needle ③ Check the sealing ring of the measuring head |
| 3 | The probe did not return within the expected time | ① The measuring needle may stick to the surface of the workpiece. ② Check if the cutting fluid/chips hinder its return. ③ Check the cleanliness inside the measuring head |
| 4 | Low battery level of the probe (wireless models only) | Replace the battery |
| 5 | Hardware malfunction of probe module | send for repair |
| 10 | The probe is triggered but the signal is not received | Check the receiver link |
Note:The definition of error codes for different versions of MIDA software (such as P93xx series tool presetter macro vs O93xx series workpiece measurement macro) may vary slightly. The above are typical values for the Fanuc system..
4、 Blum Novotet series
4.1 TC50/TC52 workpiece probe
The workpiece measuring head (TC series) of Bolong adopts a photoelectric measuring mechanism without mechanical contacts, so the failure rate caused by internal wear is lower than that of mechanical measuring heads.
| LED status | meaning | Troubleshooting steps |
|---|---|---|
| Green constantly on | System standby, battery normal | normal operation |
| Green flashing | Probe triggering in progress | Measurement is normal |
| Red always on | Low battery | Replace the battery |
| flashing red | Internal system error | ① Check the installation of the measuring needle ② Clean the sealing surface of the measuring head ③ Contact for maintenance |
| No light | Battery depletion or hibernation | Replace battery or trigger wake-up |
4.2 ZX Speed 3D Tool Probe
ZX Speed is a high-speed 3D tool probe from Bolong, with a repeatability of 0.4 μ m 2 σ and supporting three transmission modes: cable/infrared/wireless.
| LED status | meaning | troubleshoot |
|---|---|---|
| Green constantly on | Normal standby mode | normal |
| Green flashing (when triggered) | Measurement in progress | normal |
| Red always on | Battery voltage too low | Replace the battery |
| flashing red | Internal malfunction of the probe | ① Check the sealing and installation ② Check if the measuring needle is bent |
| No light | battery exhausted | Replace the battery |
4.3 LC-DIGILOG/LaserControl NT laser system
The Blum laser measurement system is equipped with more complex multi-level status indicators, which not only reflect the system status through the body LED, but also through the indicator lights of the interface module (smartLock/EM30-34 series).
4.3.1 Laser system body indicator light
| Indicator light status | meaning | Troubleshooting steps |
|---|---|---|
| Green constantly on | The laser system is ready and the laser power is normal | normal operation |
| Green flashing | Laser preheating in progress | Wait for preheating to complete (usually 5-15 minutes) |
| Yellow is always bright | The laser power is low, but still within the working range | ① Check the cleanliness of the window ② Check the pressure of the air curtain ③ Record the power value and compare it with the benchmark |
| yellow flashing | The system is undergoing automatic calibration | Waiting for calibration to complete |
| Red Flash | Low laser power or severe optical path deviation | ① Clean the laser window, check the air curtain system, check the alignment of the optical path, and recalibrate O9670/O9601 |
| Red always on | System hardware malfunction | ① Check the power supply ② Check the interface module connection ③ Contact for maintenance |
4.3.2 SmartLock Interface Module Indicator Light
SmartLock is the standard interface of Blum (compatible with all LC-DIGILOG models), integrating electrical, mechanical, and pneumatic interfaces.
| LED status | meaning |
|---|---|
| Green constantly on | Power supply is normal, and the pneumatic valve is in normal condition |
| Green flashing | Pneumatic valve in operation (blowing air/dust cover opening) |
| Red always on | Power supply failure or internal pneumatic valve failure |
4.3.3 Alarm codes for control interface module (EM30-34 series)
The Blum laser system uses EM30（PROFIBUS）/ EM31（PROFINET）/ EM32（EtherNet/IP）/ EM33（I/O+SSI）/ EM34（EtherCAT） Wait for the interface module to communicate with CNC. Each interface module comes with its own diagnostic function, and common alarm codes include:
| Alarm code (diagnostic value) | meaning | handle |
|---|---|---|
| 0x00 | fault-free | normal |
| 0x01 | The temperature of the laser power module is too high | ① Check the cooling fan ② Clean the dust accumulation on the radiator ③ Reduce the ambient temperature |
| 0x02 | Abnormal driving current of laser diode | ① Laser diode aging ② requires replacement of laser module |
| 0x03 | Optical path interruption (no laser beam reaching the receiver) | ① Check if the window is completely blocked ② Check if there are any machine parts entering the optical path ③ Clean the window |
| 0x04 | Internal communication bus error | ① Check the interface module connection ② Restart the system ③ Check the firmware version compatibility |
| 0x05 | The pressure of the gas source is lower than the working threshold | ① Check the compressed air supply ② Check the air pipe connection ③ Check the filter |
| 0x06 | The signal-to-noise ratio of the receiver signal is too low | ① Cleaning window ② Checking air curtain ③ Possible low laser power |
| 0x07 | Real time clock (RTC) malfunction | Replace the button battery of the interface module motherboard |
4.4 IC56/IC57/IC58 receivers
Blum’s infrared and radio receivers indicate their status through their own LED:
| LED status | meaning |
|---|---|
| Green constantly on | The power supply of the receiver is normal, and the communication link with the probe has been established |
| Green flashing | The probe trigger signal is being transmitted |
| Red always on | Abnormal power supply or internal malfunction of the receiver |
| flashing red | The probe exceeds the effective communication range |
5、 Quick query comparison table
The following is a quick on-site comparison, indexed byfault symptoms, without looking at the brand and specific model:
| phenomenon | Possible reasons (in descending order of probability) | The fastest solution |
|---|---|---|
| The probe does not light up | Battery depletion>Battery compartment contact oxidation>Internal electrical failure | Replace the battery, if it still doesn’t light up, check the contacts |
| The red light stays on | Low battery level (applicable to all brands) | Replace the corresponding model battery |
| Red light flashing | Internal malfunction/communication interruption/pairing loss | Different brands have different meanings, please refer to the corresponding chapter for details |
| Triggered normally but CNC cannot receive signal | Receiver issue>Optical path obstruction>Interface module failure | Check the power supply and optical path of the receiver |
| Intermittent signal loss | Wireless interference>incorrect probe angle>receiver distance exceeding limit | Check for obstacles in the work area |
| Measurement drift | Probe bending>Probe water ingress>Pre stroke change | Check the measuring needle and measure the leakage |
Document Version: V1.0
Editor: Ningbo Jiangce Technology Department
Release Date: June 20, 2026
Reference Document:
| Brand | Document Type |
|:&# 8212; -|:— — – |
| Renishaw | OMP40-2/OMP60 Technical Specification Manual, OTS/RTS Product Manual |
| Marposs | VOP40/WRP Series Product Manual, MIDA Programming Manual (Fanuc Edition) |
| Polon | TC50/TC52 User Manual, ZX Speed Operating Manual, LC-DIGILOG System Manual|
The technical data in this article is sourced from official technical materials of various brands. If you have any questions, please refer to the original manual.
Related Reading
- <a href=" https://jcetech.cn/%E6%B5%8B%E5%A4%B4%E7%94%B5%E6%B1%A0%E6%9B%B4%E6%8D%A2%E5%85%A8%E6%8C%87%E5%8D%97%EF%BC%9A%E9%9B%B7%E5%B0%BC%E7%BB%8A%E3%80%81%E9%A9%AC%E6%B3%A2%E6%96%AF%E3%80%81%E6%B3%A2%E9%BE%99%E5%90%84%E5%9E%8B%E5%8F%B7%E6%B3%A8%E6%84%8F%E4%BA%8B%E9%A1%B9/ Guide to Replacing Probe Batteries– Battery Specifications and Replacement Precautions for Various Models
- Renishaw Marbos Polon probe tool presetter model quick check table– Three brand full series model parameter quick check
- Common faults and maintenance guide for CNC machine tool probes– Three brand universal fault troubleshooting
- <a href=" https://jcetech.cn/%E6%9C%BA%E5%BA%8A%E6%B5%8B%E5%A4%B4%E7%AA%81%E7%84%B6%E6%8A%A5%E8%AD%A6%EF%BC%9F90%25%E7%9A%84%E6%95%85%E9%9A%9C%E5%8F%AF%E4%BB%A5%E7%94%A83%E6%8B%9B%E5%BF%AB%E9%80%9F%E6%8E%92%E6%9F%A5/ Sudden alarm of machine tool probe? 90% of faults can be quickly diagnosed using these 3 methods – on-site rapid diagnosis
Contact JCE Industrial Technology
JCE Industrial Technology specializes in CNC probe and tool setter repair, calibration, and technical support for all major brands including Renishaw, Marposs, and Blum. For inquiries or technical assistance, contact us at jcetech_info@jcetech.cn or visit jcetech.cn.