75
04/99 AWB 2700-1311 GB
7 Test/Commissioning/Diagnostics
Status LEDs
The coloured light-emitting diodes (LEDs) enable
quick and easy diagnosis of the PLC’s functions and
the status of the inputs and outputs can be seen at a
glance.
Table 12: Meaning of the LEDs
LED Status display Meaning
Ready Off –
On (yellow) Self test successfully
completed and CPU ready to
start
Flashing
(for 3 seconds)
Suconet K error, e.g. station
disconnected
Run Off Program in the “Halt” state
(stopped)
On (yellow) User program is running
Not Ready Off CPU, no user program error
On (red) CPU error
Severe error in user program
Battery Off Battery working correctly
On (red) Battery error
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. Make sure that the power is
switched on when you change the battery.
H1311g.bk Seite 75 Freitag, 4. Juni 1999 1:12 13
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