Siemens Simatic Operating Instructions Manual page 17

CANopen Slave
● The PN/CAN LINK can be used as an "NMT slave" according to "CiA 302 Part 2".
When the PN/CAN LINK is an NMT slave, another CANopen Manager configures the OD
and thus which data is exchanged with which other devices.
CAN transparent
● The PN/CAN LINK can be operated in "CAN transparent" mode.
● All CANopen functions are disabled in "CAN transparent" mode.
● Control information as well as status information is exchanged cyclically between the
PN/CAN LINK and the S7 controller in "CAN transparent" mode.
● Messages can be used in standard format as well as extended CAN format.
● Configured CAN messages with fixed message ID and fixed length can be used in
"CAN transparent" mode.
● Programmed CAN messages for which the message ID and the length (max. 8 bytes) is
not determined by the S7 user program until runtime can be used in "CAN transparent"
mode.
● Users can send and receive CAN messages in the S7 automation program. For this
purpose, "Transmit proxy modules" and "Receive proxy modules" can be configured in
the TIA Portal.
● The PN/CAN LINK can forward data from received CAN messages to the S7 controller as
PROFINET input data.
● Der PN/CAN LINK can send CAN messages with PROFINET output data of the
S7 controller.
SIMATIC PN/CAN LINK
Operating Instructions, 03/2018, A5E39895388-AB
System overview
3.1 Field of application
15