Siemens PPU 26x.3 series Manual page 200

Connectable components
7.8 PP 72/48D PN and PP 72/48D 2/2A PN
Example: Type plate
The type plate and the MAC address label are on the rear of the mounting plate. It is advisable
to make a note of relevant data as it is no longer visible after installation.
Figure 7-48
LEDs for status display
The I/O module has the following status displays that provide information on the module status:
Name
H1
H2
H3
H4
200
PP 72/48D 2/2A PN type plate
Designation Color
PowerOK Green
PNSync Green
PNFault Red
DIAG1 Green
Description
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.
Lit: Task system has 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 the cyclic data exchange is running.
Not lit: Module is operating without errors; the data exchange
with all configured I/O modules is running.
Lit: Severe bus error
One of the following errors is present at port 1 / port 2:
● No physical connection to a subnet/switch
● Incorrect transmission rate
● Full duplex transmission is not activated
Reserved
PPU and components
Manual, 10/2015, 6FC5397-2DP40-5BA3