What the 50001 alarm means

The xCore controller raised a system-level exception — task crash, memory fault, or watchdog. Codes 5xxxx are controller software-level events. This fault appears in a large share of our ROKAE xCore (XB / CR / NB series) service tickets, and the first round of on-site checks usually finds the source.

Most common causes

  • Program exception (division by zero, invalid index)
  • Corrupted project file
  • Power dip during a write
  • Controller hardware fault
Field note: Most of the time the problem is the first item on the list, so ruling it out saves you half the time.

Step-by-step field fix

  1. Record the full error text and the program line if shown
  2. Power-cycle the controller
  3. Restore the last known-good project
  4. Check control-power stability
  5. Escalate with the error log if the fault recurs
Safety first: For ROKAE 50001, the risk on this family is not injury but data: lose the program, parameters and calibration data and weeks of teaching work start over. On site you may carry out the first step yourself: Record the full error text and the program line if shown. Beyond that it is program and calibration data work - leave it to a professional.

How we diagnose system alarms on site

ROKAE 50001 belongs to the system & program family. On ROKAE 50001 the failing stage is xCore controller software / ROKAE SDK (ROKAE xCore controller) on the ROKAE xCore controller - the software layer: corrupted program or parameter files, boot failures, version mismatch, memory and storage media. We start reading ROKAE 50001 at the pendant alarm list; codes segment as 1xxxx / 5xxxx / 6xxxx.

The chain involved in ROKAE 50001 runs: storage media (CF / flash / disk) -> system software and firmware -> parameters and calibration data -> user programs -> runtime.

Program exception (division by zero, invalid index) on ROKAE 50001 often traces to a version combination: A solid share of system alarms comes from mismatched version sets: controller firmware upgraded while pendant software, drive configuration or a vision option stayed behind, so boot-time validation fails. Another flavour is a swapped main board or storage media whose system image carries hardware configuration that no longer matches reality. We line up firmware version, software version, option list and actual hardware config and find the one that disagrees. No hardware needed - but the matching recovery media is.

Field notes on this page cover ROKAE 50001 (xCore Controller System Error); written by the Henghuan repair team, updated 2026-10-01.

Not sure? Don't force it — contact an engineer

Send the alarm code, the robot model and a description of what was happening at the alarm. Our engineers handle ROKAE 50001 every day, and remote diagnosis by phone/video is free.

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Hotline: +86-20-39029800 · WhatsApp: +86-188-1886-2860

Related System & Program alarms

60001 — Program Execution Error
Same family: this code belongs to the System & program alarms family - the page collects all System & program-family codes we have handled, with the common inspection order and spares.
Other brands: we also keep field-fix libraries for Dobot · FANUC · KUKA and more — see the complete alarm code hub.

Frequently asked questions

QWhat does the ROKAE 50001 alarm mean?

The xCore controller raised a system-level exception — task crash, memory fault, or watchdog. Codes 5xxxx are controller software-level events. This fault appears in a large share of our ROKAE xCore (XB / CR / NB series) service tickets, and the first round of on-site checks usually finds the source. ROKAE 50001 sits in the system & program family; on our work orders the highest-frequency trigger for this code is "Program exception (division by zero, invalid index)".

QCan I clear a ROKAE 50001 alarm myself?

Whether ROKAE 50001 clears on its own depends on the outcome of "Record the full error text and the program line if shown". Finish the flow with "Escalate with the error log if the fault recurs" to confirm ROKAE 50001 - do not skip it. If that step is clean, the second most frequent cause on ROKAE 50001 is "Corrupted project file". Two attempts and still there means stop: ROKAE 50001 involves program and calibration data, and running ROKAE 50001 on can turn a repairable fault into a replacement.

QWhen you handle ROKAE 50001, will my programs and frames get lost?

The commonest causes we see on ROKAE 50001 are "Program exception (division by zero, invalid index), Corrupted project file, Power dip during a write", so we stock the van against those. For ROKAE 50001 specifically, we carry recovery media and common storage media, but on this family the backup matters more than the spare. For ROKAE 50001, on system alarms the first move is backup; we can walk the customer through preserving data remotely before anything else. Before we roll, tell us what ROKAE 50001 shows on the pendant alarm list; codes segment as 1xxxx / 5xxxx / 6xxxx and what the machine was doing - phone or video triage is free.

The content on ROKAE 50001 was written by Henghuan Robotics service engineers from hands-on repair experience. Alarm descriptions are our own reference summary and may differ by controller or software version — defer to ROKAE documentation, or contact us to confirm. Henghuan is an independent service provider with no affiliation or endorsement by ROKAE.