Lenze E94AYCPM - Manual (Page 19)

Lenze · E94AYCPM communication module (PROFIBUS®) · Communication Manual · DMS 12.0 EN · 11/2012 · TD17
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4 Technical data
4.3 Protocol data
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4.3 Protocol data
4.4 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.
Area Values
Process data words (PCD) 1 ... 32 words (16 bits/word)
Cyclic parameter data channel (DP-
V0)
4 words
Acyclic parameter data channel (DP-
V1)
Max. 240 bytes
Safety data 4 words
PROFIBUS user data length 1 ... 32 words (process data)
+ 4 words (parameter data or safety data)
Data Processing time
Process data Approx. 4 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)
For some codes, the processing time may be longer (see software manual/
online help for the Servo Drive 9400).