5
5.6 Net data (PKW and PZD area)
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SIMODRIVE 611 universal Description of Functions (FBU) – 04.05 Edition
For ”SIMODRIVE 611 universal”, the traversing blocks in the ”positio-
ning” operating mode are saved in parameters, and can therefore be
read and changed using the PKW mechanism.
Reader’s note
The parameters for the traversing blocks are described in Chapter
6.2.10.
When mapping the traversing blocks to the parameters, the parameter
number defines the block components (position, velocity, etc.) and the
sub–parameter number of the traversing block number.
Example: P0081:17 Position for traversing block 17
Addressing in the PKW mechanism:
The parameter ID (PKE) addresses the block components.
The sub–index (IND) addresses the traversing block number
This means that a complete set can only be read or changed one after
the other via the individual components.
From SW 7.1, during positioning, a new position or a new traversing
block can be accepted and executed (flying block change) using the
function ”MDI” (refer to Chapter 6.2.12).
1. A task or a response can always only be referred to one parameter.
2. The master must repeat a task until it has received the appropriate
response from the slave.
3. The slave provides the response until the master has formulated a
new task.
4. The master recognize the response to a task which it issued:
– by evaluating the response ID
– by evaluating the parameter number (PNU)
– also, if required, by evaluating the parameter index (IND)
5. For response telegrams, which include parameter values, the slave
always cyclically responds with an updated value. This involves all
responses to the tasks ”request parameter value” and ”request pa-
rameter value (array)”.
Transferring
traversing blocks
Rules for
processing
tasks/responses
5 Communications via PROFIBUS DP
02.03
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