Functional Description
MEN Mikro Elektronik GmbH
34
20BC50R00 E1 – 2015-09-07
3.7
Status and User LEDs
The BC50R provides two status LED and two user LEDs. One of the status LEDs
signals whether the onboard power generated by the BC50R’s on-board DC/DC
converter is within valid range (LED1), the other (LED2) signals the system status
(see
Chapter 3.7.1 Status LED on page 35
for a detailed description of the LED’s
behavior).
The two user LEDs can be controlled via an I/O expander on the SMBus. The LEDs
can be used freely depending on an application’s requirements. See
Chapter 4.2
SMBus Overview
for information on how to access the LEDs.
The following table shows a list of all status and user LEDs with their functionality
or default state.
Table 8.
Status and user LEDs on the BC50R
Number
Description
Color
Function
1
Power good
green
on, when internal 12V active
2
Status LED
(diagnostic)
yellow
see
Chapter 3.7.1 Status
LED on page 35
3
User LED C
blue
User LED, default: off
4
User LED A
orange
Userr LED, default: off
