System Configuration - Siemens Simatic Operating Instructions Manual

System overview

3.2 System configuration

3.2 System configuration
System configuration
The figure below shows a basic system configuration with a PN/CAN LINK as
communication gateway between a PROFINET network and a CAN network.
Figure 3-2
Purpose and function of the system components
The PN/CAN LINK enables the connection of PROFINET to CAN.
The communication of the PN/CAN LINK with the CPU of the S7 controller takes place
exclusively over the PROFINET interface.
From the PROFINET view, the PN/CAN LINK is an IO device according to Conformance
Class B (CC-B).
The cyclic data exchange between the PN/CAN LINK and the connected SIMATIC CPUs is
based on updating the IO image. Acyclic communication takes place by means of
"Read/write data record" services.
An external power supply unit with 24 V DC or the 24 V power supply of the SIMATIC
S7 system provides the power supply of the PN/CAN LINK.
The TIA Portal is used for configuring. A corresponding HSP is available for this purpose.
The configuration of CANopen slaves is based on device description files (EDS) that are
imported.
16
System configuration with PN/CAN LINK
SIMATIC PN/CAN LINK
Operating Instructions, 03/2018, A5E39895388-AB