
6 DSP301 and DSP402 Specifications
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YASKAWA ELECTRIC
SIEP C730600 64A 1000-Series Option SI-ES3 Technical Manual
Implemented CANopen Objects/Components
Communication and parameters on CANopen are built around objects using the following message types.
• SDO (Service Data Object)
The SDO object uses asynchronous data transmission and is used to access objects without mapping them to an I/O
(PDO) connection. With SDO communication, the user will have access to all CANopen objects in the option.
• Process Data Object (PDO)
The PDO object is used for I/O communication.
• Emergency Object (EMCY)
Emergency object is used for error reporting when a fault has occurred in the drive or option.
Services
Supported SDO Requests
• SDO Download Expedited
Writes up to four octets to the slave
• SDO Download Normal
Writes up to a negotiated number of octets to the slave
• Download SDO segment
Writes additional data if the object size is greater than the negotiated number of octets
• SDO Upload Expedited
Reads up to four octets from the slave
• SDO Upload Normal
Reads up to a negotiated number of octets from the slave
• Upload SDO segment
Reads additional data if the object size is greater than the negotiated number of octets
• Abort SDO Transfer
Server abort of service when error is detected
Emergency Service
• Emergency (Does not support incoming requests)
Report of unexpected conditions
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