Lenze E84Dxxxx - Manual (Page 14)

EDS84DPBUS EN 2.0 - 09/2010
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Communication manual 8400 protec PROFIBUS
Technical data
Communication time
3.3 Communication time
The communication time is the time between the start of a request and the arrival of the
corresponding response.
The communication times in a PROFIBUS network depend on ...
 the processing time in the controller;
 the transmission delay time (baud rate / telegram length);
 the nesting depth of the network.
Processing time in the controller
There are no interdependencies between parameter data and process data.
Data Processing time
Process data Approx. 2
ms
+ 0 ... 1 ms
+ 1 ... x ms
update cycle
processing time in the module
application task runtime of the technology application used
(tolerance)
Parameter data Approx. 30 ms + 20 ms tolerance (typical)
• Some codes may require a longer processing time (see software manual/
»Engineer« online help for Inverter Drives 8400).