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2. Summary
This manual provides functional specifications, installation, basic operation and settings, as well as a brief
introduction to the contents of EtherCAT protocol. To ensure the correct installation and operation of this product,
please carefully read this manual and the communication protocol of the frequency converter before using this
communication card.
This manual is only used as the VHX-CC100 operation guide and related instructions. The details of EtherCAT
protocol are not introduced here. If readers want to know more about EtherCAT protocol, please refer to relevant
professional articles or books.
This EtherCAT communication card supports two kinds of reading and writing process quantities, one is through
PDO, and the other is through SDO to read and write the object dictionary defined by the manufacturer.
3. Product characteristics
Supported functions
Support EtherCAT COE 402 protocol
Supported services
Support PDO
Support SDO
Support the object dictionary defined by the manufacture
Support SDO to read and write the function code of VFD
Supported EtherCAT Synchronization cycle
Item
Supported specifications
Synchronization cycle
250us
1ms
2ms
4ms
SDO/PDO data description
SDO(Service Data Object) is used to transmit aperiodic communication data. The master station reads and writes
data in the object dictionary , and can set the objects and monitor various states of the slave station. The response
to the read / write action to the SDO takes time. Objects refreshed with PDO should not be refreshed with SDO,
but overwritten with the value of PDO.
PDO(Process Data Object) is used to transmit periodic communication data.
The data in PDO area can realize the real-time change of VFD data by the master station and the real-time reading
of periodic data interaction.
The communication address of the data is directly configured by the VFD. It mainly includes the following
contents:
