9 | Monitoring and diagnostics
STOBER
38
11/2019 | ID 442710.03
9.2.2
PROFINET network connection
The Act. and Link LEDs at X200 and X201 on the top of the device indicate the state of the PROFINET network connection.
X200
2
1
4
3
X201
BF-Run
Link
Act
Link
Act
Fig. 8: LEDs for the state of the PROFINET network connection
1
Green: Link at X201
2
Yellow: Activity at X201
3
Green: Link at X200
4
Yellow: Activity at X200
Green LED
Behavior
Description
Off
No network connection
On
Network connection exists
Tab. 6: Meaning of the green LEDs (Link)
Yellow LED
Behavior
Description
Off
No data exchange
Flashing
Active data exchange with IO controller
Tab. 7: Meaning of the yellow LEDs (Act.)