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Operation as a PROFINET device
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– Automatic - you can enter the devices via the “Import PROFINET” function.
This
means that you can access them in the network via DCP (Discovery and Con-
figuration Protocol). In the meantime, ensure that the devices are supplied with
power and are operated in “PROFINET” operating mode.
6.2.2 Configuring the switch as a PROFINET IO device
Once all switches have been added to the bus configuration, the following settings must be
made for the individual switches via the “Detail View” tab (device details):
– The PROFINET device name must be checked and modified if necessary.
– The IP address and the subnet mask must be checked and modified, if necessary.
– The update time for inputs should be set to “ 512 ms ” (default).
– The update time for outputs should be set to “ 512 ms ” (default).
– The interface modules must be selected from the module catalog and added to the sta-
tion.
Figure 6-2 Device details with modified settings
The PROFINET variables can then be created and used in the control program.
In addition to the “PNIO_DATA_STATE” standard variable, the switch provides the link sta-
tus as a process data byte for each port. If the “PNIO_DATA_VALID” bit for the “PNIO_-
DATA_STATE” variable declares the switch process data as valid, the process data item for
a port can have the following values (see Section “Additional process data” on page 39 ):
– Value = 0 - No active link
– Value = 1 - Active link
– Value = 3 - Link present, but peer cannot establish link (only for FX ports - Far End Fault
Detection)