System Configuration - Siemens SIMATIC PN/BACnet LINK Operating Instructions Manual

3.3

System configuration

System configuration
The following figure shows a basic system configuration with a PN/BACnet LINK as a
communication gateway between a PROFINET network and a BACnet/IP network.
Figure 3-2
Purpose and function of the system components
The PN/BACnet LINK enables the connection of PROFINET to BACnet/IP.
The communication of the PN/BACnet LINK with the CPU of the S7 controller takes place
exclusively over the PROFINET interface.
From the PROFINET view, the PN/BACnet LINK is an IO device according to Conformance
Class B (CC-B).
The cyclic data exchange between the PN/BACnet LINK and the connected SIMATIC CPUs
is based on updating the IO image. Acyclic communication takes place by means of "Read
data record" and "Write data record" services.
Power is supplied to the PN/BACnet LINK either via an external 24 V DC power supply or via
the 24 V power supply of the SIMATIC S7 system.
The TIA Portal is used for configuring. A corresponding HSP is available for this purpose.
PN/BACnet LINK
Operating Instructions, 10/2017, A5E39895543-AA
System configuration with PN/BACnet LINK
System overview
3.3 System configuration
15