LED test sequence at startup - Metasys - M4-SNE10502-0 - M4-SNE22002-0 - M4-SNE110L2-0 - M4-SNE11002-0 - Supervisory Device - Network Engine - 16.0

M4-SNE Installation Guide

Product
Document revision
N
Version
16.0
Revision date
2026-06-03
Product status
Active
docpartnumberlabel
Part No.
Part number
24-10143-01647

During startup, the network engine automatically initiates a self-test to verify proper operation of the unit. Immediately after connecting supply power, the following LED lighting sequence occurs:

  • The HEARTBEAT LED flashes blue/purple when the network engine starts.
  • The FAULT LED is solid red for approximately 30 seconds, then turns off.
  • The USB-1 and USB-2 LEDs flash green when a supported device is connected to the respective USB port. The LEDs turn solid red when an unsupported device is connected. The LEDs are off if no device is connected.