Process data transfer 7
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EDS82ZAFIC EN 2.0
7 Process data transfer
INTERBUS transmits two different data types between the host (master) and the
controllers (slaves):
ƒ Parameter data
ƒ Process data
Process data
ƒ Process data is transmitted via the process data channel.
ƒ The process data serves to control the controller.
ƒ The host can directly access the process data. Data in the PLC, for instance, are
directly stored in the I/O area.
ƒ The data exchange between the master drive and the controller is required in the
shortest possible time. Here, small amounts of data can be transmitted cyclically.
ƒ Process data ...
– are not saved in the controller;
– are transmitted between the host system and the controllers in order that a
constant exchange between current input and output data takes place.
ƒ Process data are, for instance, setpoints and actual values.
Parameter data
ƒ Parameter data is transmitted via the parameter data channel (PCP channel).
ƒ The transmission of parameter data is usually not time−critical.
ƒ Parameter data are, for instance, operating parameters, motor data and diagnostic
information.
ƒ The access to all Lenze codes and indices is permitted.
ƒ When saving parameter changes, please observe the notes regarding code C0003.
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