Siemens Sinumerik 828D Manual page 74

Interface description
6.4 PLC I/O Interface based on PROFINET
LED displays on the rear
For diagnostic purposes, the RJ45 sockets are each equipped with a green and a yellow LED.
This allows the following information on the respective port to be displayed:
Name
Link
Activity
Next to the PN1 port there are two status LEDs (Fault, Sync) that apply to both ports:
Name
Fault
Sync
LED displays on the front
The three LEDs located behind the front flap at the front of the PPU have the following
significance:
Name
RDY
74
Color Status
Green Lit
Off
Yellow Lit
Off
Color Status
Red Off
Red
Flashing red (2 Hz)
Green Off
Green
Flashing green (0.5 Hz)
Color Status
Green Lights up
Yellow Lights up
Flashing
Red Lights up
Meaning
100 Mbit link available
Missing or faulty link
Sending or receiving
No activity
Meaning
For the 828D, all possible I/O modules, machine
control panels and PN/PN couplers are connec‐
ted. This is the reason why this status is not rel‐
evant for diagnostics.
Bus fault:
● No physical connection to a subnet/switch
● Incorrect transmission rate
● Full duplex transmission is not activated
For the 828D, this is a normal state and does not
represent incorrect behavior.
The SINUMERIK 828D task system is not
synchronized to the send cycle of PLC I/O Inter‐
face. An internal substitute clock of the same size
as the send clock is generated.
The SINUMERIK 828D task system has been
synchronized to the cycle for PLC I/O Interface,
and data exchange is running.
The SINUMERIK 828D task system has been
synchronized to the cycle for PLC I/O Interface,
and cyclic data exchange is running.
Meaning
NC Ready and PLC in run mode.
PLC in stop mode
Power-up
NC in stop mode:
● When booting, if NC Ready is not yet available
● Critical fault (power off/on necessary)
Manual, 05/2015, 6FC5397-2DP40-3BA4
PPU and components