Components
You can find information about diagnostic options in the following manuals and
sections:
Diagnostic repeaters
Manual
SIMATIC;
Diagnostic Repeater for PROFIBUS DP
● LED diagnostics
Switch for Ethernet
Operating Instructions
SIMATIC NET;
Industrial Ethernet Switches SCALANCE X-400
● LED
Commissioning manual
SIMATIC NET; Industrial Ethernet, SCALANCE X-100
and SCALANCE X-200 Product Line
● SCALANCE X<…> displays (SCALANCE X208 displays, for example)
Manual
SIMATIC NET; Industrial Ethernet OSM/ESM
● Display and control elements
Status LEDs for PROFINET IO and PROFIBUS DP
Comparison of LEDs for diagnostics
The following table includes information on the LEDs available for an initial diagnostics and
the meaning of the LED.
LED
Meaning for PROFINET IO
Meaning for PROFIBUS DP
BUSF
Lit up in red:
Lit up in red:
Bus error (no physical connection to a
subnet/switch)
Bus error at interface (e.g. bus short-circuit)
Incorrect transmission rate
Full duplex transmission is not activated
Flashing:
Flashing:
The PROFINET device is a controller:
The module is a DP master:
Failure of a connected IO device
Failure of a connected station
At least one of the assigned IO devices
cannot be addressed
At least one of the assigned slaves cannot
be addressed
Incorrect configuration
Incorrect configuration
The PROFINET device is an IO device:
The module is a DP slave:
The watchdog time has expired.
The watchdog time has expired.
Bus communication via PROFINET is
interrupted.
Bus communication via PROFIBUS DP is
interrupted.
IP address is incorrect.
PROFIBUS address is incorrect.
Incorrect configuration
Incorrect configuration
Incorrect parameter assignment
Incorrect or missing device name
IO controller not available/turned off, but
Ethernet connection exists.
RX
Lit up in yellow:
Not available
Data is received via the interface.
The LED flickers when low data volumes
are transferred.
Diagnostics in PCS 7
7.17 Diagnostics for hardware displays
Service support and diagnostics (V8.0)
Service Manual, 03/2012, A5E02779775-02
89
