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86 •
Fieldbus coupler/controller
Review
L
ON
W
ORKS
®
3.2.9.1 Blink code
Detailed fault messages are displayed with the aid of a blink code. A fault is
cyclically displayed with up to 3 blink sequences.
•
The first blink sequence (approx. 10 Hz) starts the fault display.
•
The second blink sequence (approx. 1 Hz) following a pause. The number
of blink pulses indicates the
fault code
.
•
The third blink sequence (approx. 1 Hz) follows after a further pause. The
number of blink pulses indicates the
fault argument
.
3.2.9.2 Fieldbus status
The operating status of the communication via LON is signalled via the top
LED group (SERVICE, STATUS and ICOM).
The SERVICE LED is directly connected to the Service Pin of the Neuron
®
Chip and indicates the state of the Neuron-C application.
Given that the proper application of the controller is not processed in the Neu-
ron
®
Chip, but processing takes place inside the CPU via the IEC 61131-1
program, the application is performed internally within the controller. This is
the case even for the states "Unconfigured", "Applicationless" and "Watchdog
Timer" which are described below.
Indeed, no communication takes place over the LON network.
SERVICE-
LED
Meaning
Trouble shooting
green
(lights up for
half a second
and then
remains off)
Configuration successfully completed.
Adress assigned and Neuron-C application is
active.
green blinks
(1 second on,
1 second off)
No configuration,
no addressing of the Network Management
Tool (domain, subnet, node), Neuron-C
application is not activated yet.
Press the Service-Pin of the coupler and check
the Neuron-C application
.
green blinks
(1 second on,
2 seconds off
then remains
on)
No Neuron-C application loaded on the node. Load the Neuron-C application from your net-
work management tool software into the node.
green blinks
cyclically
Watchdog Timer,
Neuron-C application error
Check the Neuron-C application, if necessary
restart the application.
The STATUS LED indicates that a coupler is activated. This is the case when
a wink task is sent and when the communication of both network manager and
DPRAM interface fails.
STATUS-
LED
Meaning
Trouble shouting
red blinks
(0,5 Hz)
5 times within the WINK task
(fault messages basically have a greater priority
than the WINK task.
red blinks
(2 Hz)
DPRAM interface communication fault (has
priority)
Reset fieldbus coupler hardware by switching off
the supply voltage of the coupler for about 3
seconds.
Change the fieldbus coupler if necessary.