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8.6
Commissioning the device in PROFINET
8.6.1
PROFINET IO device model
The technical properties of PROFINET IO devices are defined via their device description file, the
GSDML file. A PROFINET IO device consists of 1…n slots, which can also contain 1…n sub slots.
Sub slots are placeholders for sub modules and establish the interface to the process. Sub mod-
ules can contain parameters, data and diagnostics.
Slot 0 is always reserved as Device Access Point (DAP). The DAP contains the physical interface
to the Ethernet network and represents the device. The other slots and sub slots represent the
other device functions. The structure is defined by the manufacturer of field devices. It is not
necessary that every slot or respectively sub slot is related to physical functions. The allocation
of the slots and sub slots and thus the assignment of functions (operation mode, diagnostics,
etc.) is done in the configuration software of the PROFINET controller. This device model allows
manufacturers to design modular and flexible decentral field devices. Users are flexible in con-
figuring decentralized field devices.
Fig. 34: TIA-Portal – assignment of the slots and sub slots on the example of an TBEN-S1-8DXP
8.6.2
Device model – TBEN-L…-8IOL
The TBEN-L…-8IOL provide eight parameterizable I/O-Link-channels and four universal I/O-
channels (DXP). In addition to that, four virtual slots are provided via GSDML in PROFINET.
Those channels are used to map the different diagnostic and status (IO-Link and VAUX dia-
gnostics, IO-Link Events, module status) data into the master's process image .
