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FC 300 CANopen
- H o w t o C o n f i g u r e t h e S y s t e m -
MG.33.J1.02 VER. 050301 – VLT is a registered Danfoss trademark
15
Configure the Network
Network Management NMT
1005h, 1006h, 1007h Synchronization Object (SYNC)
The SYNC producer broadcasts the Synchronization Object periodically. This SYNC provides
the basic network clock. In order to guarantee timely access to the CAN bus the SYNC is given very
high priority identifiers (1005h, 1006h, 1007h). Devices which operate synchronously must use the
SYNC object to synchronize their own timing with that of the Synchronization Object producer.
1017h Producer Heartbeat Time
The heartbeat acts as an error control service to detect a failure in the CAN network. The heartbeat
mechanism for a device is established through cyclically transmitting a message by a heartbeat
producer. One or more devices in the network are aware of this heartbeat message. If the heartbeat
cycle fails for the heartbeat producer the local application on the heartbeat consumer will be informed
about that event.
The producer heartbeat time defines the cycle time of the heartbeat. The producer heartbeat time
remains at default 0 if it is not used.