Metso Automation
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278705
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Chapter 4
Interpreting Status LEDs
Overview
Refer to this chapter when you need to interpret the meanings of the 9 status
LEDs on the DPU front panel. At various times the LEDs flash green,
yellow, red or display no color to indicate the associated hardware’s
functional status. Discussions in the following sections explain what the
color changes may indicate under different DPU states.
The status LEDs are divided into the following sections:
Network Status LEDs
maxNET Network A health – 1 Green and 1 Yellow
maxNET Network B health – 1 Green and 1 Yellow
Backup link health – 1 Multicolor Green/Red/Yellow
Operational Status LEDs
IOM Health – 1 Multicolor Green/Red/Yellow
I/O Status – 1 Multicolor Green/Red/Yellow
CP Health – 1 Multicolor Green/Red/Yellow
State – 1 Multicolor Green/Red/Yellow
All or some of the LEDs display a set of color codes associated with the
following DPU states:
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DPU during a Windows CE boot
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DPU during normal operation
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DPU responding to soft reset
Interpreting LED Status While DPU Is Booting Windows CE
The following is a description of the LED sequencing starting from a reset to
the completion of initialization.
After Reset
Summary of Contents for PDP 400 maxDPU4F Series
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