Ppu 27X.4; Ppu Status Displays - Siemens SINUMERIK 828D Series Software And Hardware Service Manual

4.2

PPU 27x.4

4.2.1

PPU status displays

Status displays front side
On the front side of the PPU, the following status displays provide information about the module
state:
Figure 4-3
LEDs and the slots for the CompactFlash card are not available on the front of the PPU 27x.
4.
The three LEDs located behind the front flap at the front of the PPU have the following
significance:
Name
RDY
NC
CF
NOTICE
Damage to the CompactFlash card when it is withdrawn in operation
The CompactFlash card can be destroyed if it is withdrawn or inserted in operation.
Therefore, do not withdraw the CompactFlash card if an LED is lit.
Software and hardware
Service Manual, 08/2018, 6FC5397-5DP40-6BA1
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
4.2 PPU 27x.4
83