
Data transfer
Data transfer via CAN
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EDSMF2181IB EN 3.0
7
Data transfer
7.1
Data transfer via CAN
2181FEW008
Master and slave communicate with each other by sending data telegrams via the CAN
bus. The user data range of a data telegram either contains network management data,
parameter data,
or
process data
.
Different communication channels are assigned to parameter and process data in the
inverter.
Apart from the transfer of IEC61131 programs and application data, e.g. profile data, the
ModemCAN 2181 communication module is only suitable for the transfer of parameter
data.
Parameter data
(SDO, service data objects)
Parameter data channel
These are for example
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operating parameters
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diagnostics information
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motor data
In general, the transfer of parameters is not as
time−critical as the transfer of process data.
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Provide access to all Lenze codes and all CANopen
indexes.
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Changes to parameters are normally stored in the
inverter automatically (note C0003).
The structure of the CAN messages is described in the CAN communication manual.