Lenze EMF2141IB - Manual (Page 23)

Parameter setting
6-1
L
BA2141 EN 1.0
6 Parameter setting
General information on parameter setting
Two different data types are transferred by the 2141 fieldbus module:
•
Parameter data
•
Process data,
Different communication channels are assigned to parameter and process data:
Telegram type Communication channel
Parameter data These are, for instance,
• Operationg parameters
• diagnostics information
• motor data
In general, the parameter transfer is not as
time-critical as the tranfer of process data.
Parameter data channel
(chapter 6.1) • Enables the access to all Lenze codes.
• Parameter changes are normally saved in
the controller (observe C0003).
• If the parameter channel is active, it
assigns 4 words of the input and output
process data. ^ 6-2 )
Process data These are, for instance,
• Setpoints
• Actual values
Exchange between host and controller
required as fast as possible. Small amounts
of data, which are transferred cyclically.
Process-data channel
(chapter 6.2) • The controller can be controlled using the
process data.
( ^ 6-7 ).
• The host has direct access to the process
data.
In the PLC, for instance, the data are
directly assigned to the I/O area.
• Process data are
– not stored in the controller.
– cyclically transferred between the host
and the controller (continuous
exchange of current input and output
data).
Tab. 6-1 Division of parameter data and process data into different communication channels
The communication protocol is only described as much as it is needed for building up the network
with Lenze controllers.
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