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Bolt X Network Error Persists After Cable/Hub/PC Swap — Unstable Base Ethernet Port

Summary

If a Bolt X network error persists after replacing all external network cables, the hub, and even the computer, inspect the Ethernet port/path inside the robot base. In the field case, the operator found the robot-base Ethernet port was unstable and was advised to send a report to MRMC.

Symptoms

  • Bolt X with Flair 7.7.7 shows a network/communication error.
  • Same problem appears in Flair Classic.
  • Replacing all network cables does not solve it.
  • Replacing the hub does not solve it.
  • Replacing the computer does not solve it.
  • Robot-base Ethernet port appears unstable.

Community Guidance

[LIKELY] Check internal base network path and try a direct cable

2025-12-23 — Dragon Zhang / Arturo / Stafford

  1. Confirm the hub is connected to the correct Ethernet port.
  2. Check all Ethernet cables.
  3. Check whether the hub inside the Bolt X is sending data.
  4. Inspect the robot-base Ethernet port for intermittent connection.
  5. Try running another cable directly from the black box to the robot.
  6. Send a report to MRMC if the base port is unstable.

confidence_score: 0.78

Screenshot/error description: Bolt X network or communication error persists after replacing external network cables, hub, and computer; base Ethernet port/path appears unstable. Source file: 00035561-VIDEO-2025-12-23-13-37-29.mp4. ▶

Media Text / Description

  • Screenshot/error description: Bolt X network or communication error persists after replacing external network cables, hub, and computer; base Ethernet port/path appears unstable.
  • Media 1: Screenshot/error description: Bolt X network or communication error persists after replacing external network cables, hub, and computer; base Ethernet port/path appears unstable. Source file: 00035561-VIDEO-2025-12-23-13-37-29.mp4.
  • Media 2: Screenshot/error description: Bolt X network or communication error persists after replacing external network cables, hub, and computer; base Ethernet port/path appears unstable.

WhatsApp Excerpts

[23/12/2025, 1:17:08 pm] ~ Dragon Zhang: Hi, anyone can help me fix this error

[23/12/2025, 1:17:31 pm] ~ Dragon Zhang: I already replaced all the network cable and the computer

[23/12/2025, 1:18:02 pm] ~ Dragon Zhang: it is a boltx with flair 7.7.7

[23/12/2025, 1:18:28 pm] ~ Dragon Zhang: Same problem on the Flari calssic

[23/12/2025, 1:25:15 pm] ~ Arturo: Is the HUB is well connected? Is it in the proper ethernet port?

[23/12/2025, 1:26:03 pm] ~ Dragon Zhang: I also replace the hub

[23/12/2025, 1:28:51 pm] ~ Dragon Zhang: should I check anythings else?

[23/12/2025, 1:37:29 pm] ~ Dragon Zhang: the port 4 is connect to the robot, not flashing

[23/12/2025, 1:37:49 pm] ~ Dragon Zhang: is this normal?

[23/12/2025, 1:50:08 pm] ~ Arturo: I think it’s normal

[23/12/2025, 1:50:39 pm] ~ Arturo: Have you reboot the whole system? Robot and PC?

[23/12/2025, 1:51:09 pm] ~ Dragon Zhang: Yes, I did many times

[23/12/2025, 1:52:22 pm] ~ Dragon Zhang: Just found a problem on the robot base, the ethernet port is not stable

[23/12/2025, 1:52:55 pm] ~ Arturo: Ok, then, I think you should send a Report to MRMC. They should tell you how to fix that problem

Official Documentation

Flair Classic Manual — Ch.14A High Speed Robots / EtherCAT — p.235

Flair Classic Manual — Ch.22 Network Direct — p.313

Flair 7 Manual — Ch.11 High Speed Robots / EtherCAT — p.195

Flair 7 Manual — Ch.19 Network Direct — p.263