Beckhoff CX-B930 Series, Manual

Page: 37 / 48

Error handling and diagnostics
CXxxxx-M930/B930 37 Version: 1.1
6 Error handling and diagnostics
6.1 Diagnostic LEDs
Table 1: PN diagnostic LED, description of the flashing behavior.
Display LED PROFINET status Meaning
green red
FB1
PWR
TC
FB2
HDD
Cxxxx0
PN
DIAG
PN off flashing 200ms Power on, startup phase
200 ms flashing off no PROFINET name
1 sec off, 200 ms
on off No IP address
on off Run
Table 2: DIAG diagnostic LED, description of the flashing behavior.
Display LED PROFINET diagnosis Meaning
green red
FB1
PWR
TC
FB2
HDD
Cxxxx0
PN
DIAG
DIAG 500 ms flashing 500 ms flashing PN controller identification.
The PN controller is
transmitting an identification
signal.
off 200 ms flashing The establishment of a
connection with the
controller has not been
completed.
1 s off 200, ms on off Problem when establishing
a connection, or the actual
and target configurations
are different.
200 ms off The device is in data
exchange but the PLC is in
Stop mode.
on off The device is in data
exchange.
If a virtual PROFINET slave was configured, this is also covered by the LEDs in the event of an error. The
physical device always has higher priority. The status of the virtual slave is only displayed once everything is
OK with the physical device.