4. Names and Functions of Components
Express5800/R320c-E4, R320c-M4 User's Guide
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Chapter 1 General Description
4.
Names and Functions of Components
Names and functions of components are shown below:
4.1
Front View
(1) System POWER LED
This LED lights in green when one of the powers of the CPU/IO modules is ON. LED
goes off when both powers of CPU/IO module are OFF.
(2) System FAULT LED
When one of the CPU/IO modules fails, the LED goes on amber. Details can be
confirmed by checking (14) EXPRESSSCOPE. The LED goes on amber when the
failed CPU/IO module cannot be identified.
(3) System FT LED
This LED displays the device status.
The LED lights in green when operating under duplex condition.
The LED goes off if it is not in duplex condition.
The LED blinks in green while executing Active Upgrade.
(4) System ID LED
This LED is used to identify the device to be maintained.
This LED lights in blue when pressing UID switch is pressed (see the next page).
This LED blinks in blue when there are device identification requests remotely.
(1)
(2)
(3)
(4)
