5 CANopen communication
5.1 About CANopen
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Lenze · I/O system 1000 · Reference Manual · DMS 5.0 EN · 09/2016 · TD17
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5.1.2 Identifier
The principle of the CAN communication is based on a message-oriented data exchange between a
sender and many receivers. All nodes can send and receive quasi-simultaneously.
The Identifier in the CAN telegram, also called COB-ID (Communication Object Identifier), is used to
control which node is to receive a transmitted message. In addition to the addressing, the identifier
contains information on the priority of the message and the type of user data.
The identifier consists of a 'basic identifier' and the node address of the device to be approached:
Identifier = basic identifier + node address
• This node address is set with the coding switch at the module.
• Network management and sync telegram only require the basic identifier.
• The identifiers can also be set individually
Assigning individual identifiers
( 85)
5.1.3 Saving settings
The settings are permanently stored via I-1010 (communication protocol DS301/DS401).
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