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10.5 Diagnostic messages
PROFINET enables the PROFINET device to store diagnos-
tic information together with the error location and error type.
An incoming alarm informs the PROFINET controller that di-
agnostic information has been entered.
When the diagnostic information has been removed, an out-
going alarm is sent to the device.
If at least one piece of diagnostic information is stored, the
SF LED is on. If no diagnostic information is present, the SF
LED is off.
The following PROFINET diagnostic messages are indi-
cated by the PROFINET device:
– Overtemperature of the device
–Surge voltage of U
S
– Overload of U
S
– Short circuit of an output
–Output overload
10.6 LLDP - Link Layer Discovery Protocol
The device supports LLDP according to IEEE 802.1AB and
therefore enables topology detection of devices that also
have LLDP activated.
Advantages of using LLDP:
– Improved error location detection
– Improved device replacement
– More efficient network configuration
The following information is received by or sent to neigh-
bors, as long as LLDP is activated:
– The device sends its own management and connection
information to neighboring devices.
– The device receives management and connection infor-
mation from neighboring devices.
Engineering tools can be used to represent the LLDP infor-
mation as a topology overview.
10.7 MRP - Media Redundancy Protocol
The device supports the role of a Media Redundancy Client
(MRC) in an MRP network.
10.8 FSU - Fast Startup
The device supports the Fast Startup function. This function
enables fast startup of the PROFINET device. The device is
ready to operate in < 500 ms.
10.9 Shared device
The device supports the shared device function. This en-
ables two controllers to simultaneously establish a cyclic
connection to the device and read input data. Writing out-
puts can only be activated by the first controller.
10.10 Device replacement
Devices can be replaced without having to reconfigure them
within the PROFINET network.
Device replacement is only then possible if the new device
is in its default state. The controller must support the device
replacement function.
The device name and the device address are assigned by
the controller to the newly added PROFINET device with the
help of the neighborhood detection function.
Channel diagnostics are always reported in
groups of 4.
Follow the instructions in the documentation
for your engineering tool and controller in or-
der to parameterize this function.
Follow the instructions in the documentation
for your engineering tool and controller in or-
der to parameterize this function.
Follow the instructions in the documentation
for your engineering tool and controller in or-
der to parameterize this function.
