Siemens SINUMERIK 840D sl Manual page 116

Connectable components
9.3 PP 72/48D 2/2A PN
Note
The type plate is located 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.
LED displays
Each PROFINET port has two integrated LEDs displaying the link status (green) and activity
(orange); see chapter Application (Page 58).
The PP 72/48D 2/2A PN has the following LEDs, which provide information on the module
status.
Table 9-32 LEDs: Status display
Name Designation
H1 PowerOK
H2 PNSync
H3 PNFault
H4 DIAG1
H5 DIAG2
H6 OVTemp
Note
When the system is booting, LEDs H1, H2 and H3 are lit.
116
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 the bus cycle clock.
Flashes 0.5 Hz: Task system has synchronized to the bus cycle clock and cyclic data
exchange is running.
Red Not lit: Module is operating without error.
Lit: A system error has occurred (faulty module, incorrect parameterization by the
PROFINET controller, etc. ).
Green Reserved
Green Reserved
Red Overtemperature display
NCU 7x0.3 PN, NCU 7x0.3B PN
Manual, 06/2014, 6FC5397-1EP40-5BA1