Siemens SINUMERIK 828D Manual page 152

Connectable components
7.5 PP 72/48D PN
Type plate
The type plate and the MAC address label are on the rear side of the mounting plate. It is
advisable to make a note of relevant data as it is no longer visible after installation.
Figure 7-33
LED for status displays
The PP 72/48 D PN has the following additional LEDs that provide information on the
module status:
Name Designation
H1 PowerOK
H2 PNSync
H3 PNFault
H4 DIAG1
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PP 72/48D PN type plate
Color Description
Green Lit: Power supply ok
Not lit: As soon as one of the generated logic voltages falls below its setpoint, a reset is
triggered and the PowerOK LED goes out.
Green Lit: Task system is synchronized to the bus cycle clock.
Not lit: Task system is not synchronized to bus cycle clock.
Flashes 0.5 Hz: Task system is synchronized to the bus cycle clock and cyclic data
exchange is running.
Red Not lit: Module is operating without errors; data exchange with all configured I/O devices
is running.
Lit: Serious bus fault; only output when one of the following errors is detected for the
ports:
No physical connection to a subnet/switch

Incorrect transmission rate

Full duplex transmission is not activated

Green Reserved
Manual, 03/2013, 6FC5397-2DP40-3BA1
PPU