
IL•1F CANopen DS301 | 3 Basics |
3.4Process data communication
3.4.1Overview
This chapter describes the flow of information from the perspective of your product in compliance with CiA standard DS301. The designation "receive" relates to a flow of data from the master to the product, while "transmit" represents a flow of data from the product to the master.
Process data objects (PDO: Process Data Object) are used for
The flexible data length of a PDO message also increases the data throughput. A PDO message can transmit up to 8 bytes of data. If only 2 bytes are assigned, only 2 data bytes are sent.
The length of a PDO message and the assignment of the data fields are specified by PDO mapping. For more information see chapter 3.4.2.1 "Dynamic and static PDO mapping".
PDO messages can be exchanged between devices that generate or process process data.
One PDO each is available for sending and receiving a PDO message:
•T_PDO to transmit the PDO message (T: "Transmit"),
•R_PDO to receive data (R: "Receive").
0198441113586, V2.01, 11.2008
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