8 Diagnostics
EDK2191DB DE/EN/FR 2.0
38
H1_Diagnose−−−−(DUMMYSEITEVOR)−−−
8 Diagnostics
The LEDs on the front are provided to the communication module for the purpose of fault
diagnostics.
LED
Description
Pos. Colour Condition
green
off The communication module is supplied with voltage, but has no
connection to the basic device (basic device is either switched off,
in the initialisation phase, or not available).
on The communication module is supplied with voltage and is
connected to the standard device.
green
The NMT state machine triggers the two−colored LED:
l Green: Display of status messages
l Red: Display of error messages
off NMT_GS_OFF, NMT_GS_INITIALISATION,
NMT_CS_NOT_ACTIVE / NMT_MS_NOT_ACTIVE
NMT_CS_PREOPERATIONAL_1 / NMT_MS_PREOPERATIONAL_1
(LED flashes once within a second.)
NMT_CS_PREOPERATIONAL_2 / NMT_MS_PREOPERATIONAL_2
(LED flashes twice within a second.)
NMT_CS_READY_TO_OPERATE / NMT_MS_READY_TO_OPERATE
(LED flashes three times within a second.)
NMT_CS_BASIC_ETHERNET
(LED is blinking with a frequency of 10 Hz or depending on the
connection state)
NMT_CS_STOPPED
(LED is blinking with a frequency of 2.5 Hz.)
NMT_CS_OPERATIONAL / NMT_MS_OPERATIONAL
(LED is lit permanently.)
red ERROR
(LED is lit permanently. An error has occurred.)
red on The red and green drive LED indicates the operating status of the
standard device (see documentation of the standard device).
green blinking Depending on the connection state, the data is transmitted or
received (ACTIVITY).
yellow on Ethernet connection is available (LINK).
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