Siemens Simatic Operating Instructions Manual page 16

System overview
3.1 Field of application
General features
● CAN interface according to ISO 11898-2 (High Speed CAN)
● 2 PROFINET interfaces (integrated switch) enable PROFINET line operation according to
Conformance Class B (CC-B).
● In addition to the PROFINET and CAN protocol, the PN/CAN LINK also offers the
CANopen protocol. This means the PN/CAN LINK can be operated as a CANopen node
and can also take on the role of CANopen Manager in the CANopen network. The
PN/CAN LINK can be operated in the following three modes:
– CANopen Manager
– CANopen Slave
– CAN transparent
● The operating mode for the PN/CAN LINK is set via the associated HSP in the TIA Portal.
● The PN/CAN LINK supports both the standard format (CAN 2.0A) as well as the extended
CAN format (CAN 2.0B).
● The PN/CAN LINK can operate up to 126 nodes in the CAN network in Manager mode.
● The CAN side supports baud rates from 50 kBaud up to 1000 kBaud.
● The maximum permissible cable length of the CAN network is up to 1000 m (dependent
on data transmission rate, cable cross-section, number of nodes).
CANopen Manager
● CANopen implementation according to CANopen specification "CiA 301"
● The PN/CAN LINK can operate up to 126 slaves as CANopen Manager in the
CANopen network.
● Network management functions according to CiA standard "CiA 302 Part 2".
If the PN/CAN LINK is operated as CANopen Manager, it takes over the following
functions:
– NMT Master: The PN/CAN LINK controls the NMT state of the other CAN devices and
– Configuration Manager: The PN/CAN LINK configures the CANopen slaves during the
● I/O data are transmitted on the CANopen side with the help of process data objects
(PDOs).
● All PDO transmission rates specified in the CiA301 standard are supported.
● Segmented SDO data transmission is supported.
● SYNC function as producer (sender) as well as consumer (receiver)
● "Heartbeat" function
● "Node guarding" function
● "EMCY" (Emergency) function
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executes the boot-up procedure according to the CiA standard "CiA 302 Part 2".
boot-up procedure by means of SDO write access.
SIMATIC PN/CAN LINK
Operating Instructions, 03/2018, A5E39895388-AB