COBID,CanID,NodeID的不同

"Addresses" in CANopen

In CANopen there are different types of addresses (IDs):

• COB ID

The CAN Object Identifier addresses the message (= the CAN object) in the list of devices.
Identical messages have the same COB ID. The COB ID entries in the object directory contain the

CAN identifier (CAN ID) among others.

• CAN ID

The CAN Identifier identifies CAN messages in the complete network. The CAN ID is part of the

COB ID in the object directory.

• Node ID

The Node Identifier identifies the CANopen devices in the complete network. The Node ID is part

of some predefined CAN IDs (lower 7 bits).

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