Siemens PPU 26x.3 series Manual page 80

Interface description
6.4 PLC I/O Interface based on PROFINET
LED displays on the front
The three LEDs located behind the front flap (not for PPU290.3) at the front of the PPU have
the following significance:
Name
RDY
NC
CF
NOTICE
CompactFlash card
If the LED is lit, the CompactFlash card must not be removed!
Non-compliance can result in damage to the CompactFlash card.
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
80
Color Status
Green Lights up
Yellow Lights up
Flashing
Red Lights up
Yellow Cyclic flashing
Yellow Lights up
Color Status
Green Lit
Off
Yellow Lit
Off
Color Status
Red Off
Red
Flashing red (2 Hz)
Meaning
NC Ready and PLC in run mode.
PLC in stop mode
Power-up
NC in stop condition:
● When powering up, if NC Ready is not yet
available
● Critical fault (power off/on necessary)
NC operation
Access to the CompactFlash card
Meaning
100 Mbit link available
Missing or faulty link
Sending or receiving
No activity
Meaning
This state is not relevant for the diagnostics if I/
O modules, machine control panels and PN/PN
couplers are connected to the control.
Bus fault:
● No physical connection to a subnet/switch
● Incorrect transmission rate
● Full duplex transmission is not activated
With the SINUMERIK 828D, this does not indi‐
cate an incorrect response.
Manual, 10/2015, 6FC5397-2DP40-5BA3
PPU and components