Siemens SIMATIC PN/CAN LINK

Functions
5.1 CANopen
SIMATIC PN/CAN LINK
38 Operating Instructions, 03/2022, A5E39895388-AC
5.1.1.7 SYNC messages
The PN/CAN LINK supports the SYNC protocol as sender (producer) as well as receiver
(consumer).
The SYNC consumer function is required for PDOs with "synchronous" transmission types (see
Process data objects (PDO) (Page 35)).
In the configuration you specify whether the PN/CAN LINK is SYNC producer or SYNC
consumer as well as the send interval. In "CANopen Manager" mode, a different CANopen
slave can be configured as SYNC producer. The COB ID that must be used for this purpose can
be changed in "CANopen Slave" mode by the manager with SDO. The default value for the
COB ID is 0x80 in "CANopen Manager" mode.
Note
During SYNC, not less than 100
μs (internal time limit) can be set. Lower setting of OD
0x1006 is rejected if SYNC transmitter bit is detected in OD 0x1005.
Note
The SYNC function only has an effect on the CANopen side. It is not used to synchronize the
data transmission on the CANopen side and the PROFINET side.