65
04/99 AWB 27-1184 GB
7 Testing/Commissioning/Diagnostics
Status LEDs The coloured light-emitting diodes (LEDs) allow fast
and simple diagnostics of the PLC functions. The
states of the inputs/outputs are easy to monitor.
Table 14: Significance of the LEDs
LED Status Significance
Ready Off –
On (yellow) Self-test successfully
completed and CPU ready to
start
Blinking
(3 seconds)
Suconet K error
Run Off Program in “Halt” (stop)
status
On (yellow) User program is running
Not Ready Off No errors in CPU and user
program
On (red) No user program or user
program incorrect
CPU error
Serious error in
user program
Battery Off Battery in good condition
On (red) Battery fault
1)
Status of
Inputs
Off Input not activated
On (green) Input activated
Status of outputs Off Output not activated
On (green) Output activated
1)
Caution!
Data may be lost if the battery does not supply
sufficient power. Always replace the battery with
the power supply switched on!
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