Lenze E94AYCIB - Manual (Page 36)

7 Data transfer
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Lenze · E94AYCIB communication module (INTERBUS) · Communication Manual · DMS 4.0 EN · 02/2014 · TD17
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7 Data transfer
The INTERBUS transmits parameter data, configuration data, diagnostic data, alarm messages and
process data between the host (master) and the inverters (slaves) participating in the fieldbus.
Depending on their time-critical nature, the data are transmitted via different communication
channels.
Communication channels
The process data channel transmits process data.
• The process data serve to control the inverter.
• The transmission of process data is time-critical.
• Process data are cyclically transferred between the host (master) and the inveters connected to
the fieldbus (slaves) (continuous exchange of current input and output data).
• The host (master) can directly access the process data. In the PLC, for instance, the data are
directly saved to the IO area.
• 0 ... 10 process data words can be used.
• Process data are not saved in the inverter.
• Process data are e.g. setpoints, actual values, control words, and status words.
The parameter data channel serves to transfer parameter data.
• The parameter data channel provides access to all Lenze codes.
• The transmission of parameter data is usually not time-critical.
• Parameter data are, for instance, operating parameters, diagnostic information, and motor
data.
• 0, 1, 2 order 4 parameter data words can be used.
• The parameter data is transmitted in accordance with the Peripherials Communication Protocol
(PCP).
• The parameter data channel is identical for both transmission directions.
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Note!
The data word sum (process data words + parameter data words) has to consist of 1 ... 10
words (16 bits/word).
Please observe the direction of the flow of information:
• Input data (Rx data): Process data from the inverter (slave) to the master
• Output data (Tx data): Process data from the master to the inverter (slave)