Lenze EMF2111IB - Manual (Page 23)

Data transfer
5
2111 INTERBUS fieldbus module
5.6
L
5.6-1 EDSIBS-1.0-06/2003
5.6 Data transfer
INTERBUS master and slave communicate by sending data telegrams via the
INTERBUS.
The user data of the data telegram contains parameter data or process data.
Different communication channels are assigned to parameter and process data:
Telegram type Communication channel
Process data,
• Setpoints
• Actual values
Process-data channel • Exchange between INTERBUS master and
controller required as fast as possible. Small
amounts of data for cyclic data transfer.
• The INTERBUS master has direct access to the
process data.
• Process data can control the controller.
• Process data are
– not stored in the controller.
– exchanged between INTERBUS master and
controllers to ensure a constant update of
input and output data.
Parameter data
• Operating parameters
• diagnostics information
• motor data
Parameter data channel
or “PCP channel”
(PCP = Peripherials
Communication Protocol)
• In general, the parameter transfer is not as
time-critical as the tranfer of process data.
• Enables access to all Lenze codes and indexes.
Tab. 5.6-1 Division of parameter data and process data into different communication channels
The following describes the communication protocol only as much as needed for
networking Lenze controllers.
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