optic network module FN2006 / FN2007 troubleshooting steps
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↑ CPU card
1. NOTICE! Configuration will be deleted! Save the configuration data for the
'Station' before restoring the factory setting.
2. Briefly press the 'S8' button on the CPU card several times until a 'F' is
displayed on the LED matrix display.
3. WARNING! It is impossible to acquire and process alarms or faults without a
site configuration! As soon as the 'F' is displayed, press and hold the 'S8'
button for approx. 2 s to confirm the selection.
A checkmark on the LED matrix display confirms the selection.
The CPU card is restarted.
You will find information on the
CPU card FCC2004, the LED matrix display,
and operating the 'S8' button in document 008837. See chapter 'Applicable
documents'.
See also
1 Applicable documents [➙ 11]
31.11 Fiber-optic network module FN2006 / FN2007
troubleshooting steps
Faults on a specific line can be located by referring to the LED indicators and the
table below.
The following fault scenarios are examples that relate to node1, line1 and node2,
line2. Faults on the copper side concern line1 within node1, for example.
Number Pwr x RX1 Fail1 EF1 LNK1 Possible cause LNK2 EF2 Fail2 RX2 Pwr x
Node 1 / line 1 Node 2 / line 2
1 ON ON OFF OFF FLSHG Normal operation FLSHG OFF OFF ON ON
2 ON OFF ON OFF OFF
Optical fibers wrong way
round
FLSHG OFF ON OFF ON
3a ON OFF ON OFF OFF Break in optical fiber RX1 OFF OFF OFF ON ON
3b ON ON OFF OFF OFF Break in optical fiber RX2 OFF OFF ON OFF ON
4 OFF OFF OFF OFF OFF Energy supply interrupted FLSHG OFF ON
1
OFF
1
ON
5 ON ON OFF ON
2
FLSHG Ground fault at A1/B1 FLSHG OFF OFF ON ON
6 ON ON OFF OFF OFF A1/B1 wrong way round FLSHG OFF OFF ON ON
7 ON ON OFF OFF OFF Break in A1 or B1 FLSHG OFF OFF ON ON
Table 9: Searching for faults on fiber-optic cable converter based on LED status
1
Depending on which module with a fully intact supply is connected, RX1 / RX2 is
OFF, and Fail1 or Fail2 is ON.
2
In the event of a ground fault, LED EF1 lights up and LED EF2 flashes (to
indicate that the ground fault is being forwarded).
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