Ppu26X/Ppu28X; Status Displays At The Ppu - Siemens SINUMERIK 828D Service Manual

4.1

PPU26x/PPU28x

4.1.1

Status displays at the PPU

LED status at the front
Figure 4-2
The 3 LEDs located behind the protective flap on the front side of the PPU mean the
following:
Name
RDY
NC
CF
CAUTION
If the LED is lit, the CompactFlash Card must not be removed!
Non-compliance can result in damage to the CompactFlash Card.
Hardware and Software
Service Manual, 03/2010, 6FC5397-5DP20-0BA0
Vertical flap (detail)
Color State
Green Is lit
Yellow Is lit
Flashing
Red Is lit
Yellow Cyclic flashing
Yellow Is lit
Meaning
NC Ready and PLC in run mode.
PLC in stop mode
Booting
NC in stop mode:
When booting, if NC Ready is not yet available

Critical fault (power off/on necessary)

NC operation
User CompactFlash Card being accessed
Service cases - hardware
4.1 PPU26x/PPU28x
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