Descriptions and Drawings
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NXHX 51-ETM | Development Board
DOC120606HW05EN | Revision 5 | English | 2013-10 | Released | Public
© Hilscher, 2012 - 2013
2.5
LEDs
The NXHX 51-ETM is equipped with the following LEDs:
No. in
device
drawing
LED naming in
device drawing
LED function
Color
Signal name
(green)
RUN#
V1
(yellow / green)
SYS
System Status
(yellow)
RDY#
COM0
(green)
MMIO28
V30
(red / green)
Communication
status
(red)
MMIO29
COM1
(green)
MMIO30
V31
(red / green)
Communication
status
(red)
MMIO31
V12
(yellow)
General output
(yellow)
MMIO24
V13
(yellow)
General output
(yellow)
MMIO25
V14
(yellow)
General output
(yellow)
MMIO26
V15
(yellow)
General output
(yellow)
MMIO27
Table 34: LEDs on the NXHX 51-ETM
The meaning of the COM LEDs (V30 and V31) depends on the
communication protocol used on the NXHX 51-ETM board.
LED SYS (V1)
The subsequent table describes the meaning of the system LED.
LED
Color
State
Meaning
Duo LED yellow/green
(yellow)
Static
Bootloader netX (= romloader) is waiting for second stage bootloader
(green/
yellow)
Blinking
green/
yellow
Second stage bootloader is waiting for firmware
(green)
On
Operating System running
SYS
(off)
Off
Power supply for the device is missing or hardware defect.
Table 35: System Status LED
Position
in
Figure 2: NXHX51-ETM Printed Circuit Board
