
6 DSP301 and DSP402 Specifications
YASKAWA ELECTRIC
SIEP C730600 64A 1000-Series Option SI-ES3 Technical Manual
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6
DSP301 and DSP402 Specifications
Network communication on EtherCAT is based on the DSP301 communication profile and the CANopen DSP402 device
profile for drives and motion control. This profile specifies mandatory objects that will be implemented as well as
manufacturer specific and optional objects.
Process Data Objects (PDOs) are used for I/O exchange and Service Data Objects (SDO) for explicit messaging. The
time for transmitting PDOs is significantly lower than the time for transmitting SDOs, therefore, communication objects
like command/reference are mapped onto PDOs as standard.
All CANopen communication objects can be accessed via SDOs. The SDOs allow acknowledged access to
communication objects, i.e., the communication adapter confirms the intended access.
Modes
The A1000 series EtherCAT option will support two operating modes:
• DSP402 Velocity mode
DSP402 object 0x6061 (Modes of operation display) = 2
• Automatic vendor specific mode
It is also possible to run the drive by mapping the vendor specific command and status to control the drive. Any access
to the DSP402 Controlword will be rejected.
DSP402 object 0x6061 (Modes of operation display) = -2
Profile/vendor mode is automatically activated by the option within the following constraints:
• If an RxPDO mapping has been assigned to DSP402 Controlword 0x6040 and EtherCAT is in the Safe-Operational
(SAFEOP) or Operational (OP) state, the DSP402 profile will be processed.
• If the EtherCAT state machine is NOT in the SAFEOP or OP state and an SDO write request is performed on the
DSP402 0x6040 Controlword, the DSP402 profile will be processed.
• If the EtherCAT state machine is NOT in the SAFEOP or OP state and an SDO read request is performed on the
DSP402 0x6041 Statusword, the DSP402 profile will be processed.
• Otherwise, the vendor specific Controlword will be accessed normally.
DSP402 Velocity Mode
Many AC drives use this simple mode to control the velocity of the drive with limits and ramp functions.
Vendor Specific Mode (DSP402 profile bypass)
In this mode, the DSP402 state machine processor in the option is bypassed and the drive native control commands and
status are used.
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