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bCX1 controller will not start up, the CPU LED flashes 5 times and remains on steady.

Issue

After powering off, pressing the reset and Reset IP button a bCX1 controller still will not start up. CPU does not flash and controller will not respond to a ping.

Environment

bCX1-CR-INF 9640

bCX1-CR 4040

Cause

The controller is connected to an Ethernet network that is in a broadcast storm condition.

Resolution

Disconnect the Ethernet cable from the controller and it will start up correctly.

On a very busy network or under a broadcast storm condition the controller will protect itself as detailed in Lessons Learned Article #6893.

This scenario can occur if a patch lead is inadvertently looped back onto the same Switch/ Router.

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Revision #:
1 of 1
Last update:
‎2018-09-10 07:53 AM
Updated by: