Led Displays - Siemens SINUMERIK 828D Manual

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11.4 PP 72/48D PN
11.4.3

LED displays

Display elements
Each PLC I/O Interface port has two integrated LEDs displaying the link status (green) and
activity (yellow); see the chapter titled PLC I/O Interface PN1, PN2 (Page 46).
The PP 72/48 D PN has the following additional LEDs, which provide information on the
module status:
Table 11- 44 LEDs: Status indicator
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.
134
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 IO 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
Green Reserved
Red Overtemperature indication
Manual, 06/2009, 6FC5397-2DP10-0BA0
PPU