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Device Configuration Files (DCF)
The format of the Device Configuration File is almost identical to the EDS.
The idea of a DCF is to store the configuration parameters of a specific node.
This can include minimum, maximum and default values for each entry.
The DCF stores a specific setting, the current value that an Object Dictionary entry has or should have.
The idea is that a CANOPEN configuration tool or master can use the EDS to find out which entries are accessible in a node,
and they can use a DCF to store (or retrieve) the values that a node has in these Object Dictionary entries.
thus it becomes possible to save and restore all settings of a node: to save current settings a tool/master
would read all Object Dictionary entries of a node and store the values read in a DCF.
How can a CANOPEN configuration tool or master access OD entries of a remote node?
CANOPEN uses for such purpose a point-to-point communication channel between the master (client) and the node (server).
The protocol used on top of CAN ROW uses messages called Service Data Objects (SDO).
CANopen is a communication protocol and device profile specification for embedded systems used in automation.