4
OPERATION
16
MFC 400
www.krohne.com
12/2017 - 4006097501 - AD MFC 400 Profinet R01 en
4.3.1 Module status
The MS (Module Status) LED indicates the status of the PROFINET IO interface.
4.3.2 Network status
The NS (Network Status) LED indicates the PROFINET IO communication state.
4.4 Locking of configuration
The device provides a locking mechanism for the local display when a PROFINET IO connection is
active. The lock covers all parameters within the start-up parameters as well as totalizers and
sensor control (e.g. zero calibration).
To enable the lock, set "Use configuration by PN controller" and "Lock Local Display" in the
start-up parameters (for details refer to
General
on page 19).
The write lock will be activated as soon as the PROFINET IO connection is established.
Once the PROFINET IO connection is released, the write lock will be deactivated.
Colour / signal
Description
Red, steady on
Communication module failure.
Green, steady on
Operating correctly.
Table 4-4: MS LED
Colour / signal
Description
Yellow, flashing
PROFINET DCP signal used for device identification.
Red, steady on
No Ethernet link.
Green, flashing
Ethernet link at least on one port but no active PROFINET IO connection.
Green, steady on
Active PROFINET IO connection.
Table 4-5: NS LED
INFORMATION!
The lock jumper must not be used with the PROFINET IO communication option. Otherwise the
device signals a device failure.
