Lenze E84DSxxx - Manual (Page 443)

Lenze · 8400 protec StateLine · Reference manual · DMS 4.2 EN · 03/2013 · TD05
443
11 PROFIBUS/PROFINET option
11.3 Process data transfer
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11.3 Process data transfer
The process data serve to control the controller. Thus the transfer of the process data is time-critical.
• The process cycle is 1ms, irrespective of the respective communication option and the type of
controller.
• Process data transfer takes place cyclically between the master system and the drive controllers.
• This concerns the continuous exchange of current input and output data.
• In the case of the 8400 protec StateLine controller, 16 words per direction are exchanged.
• The master computer can directly access the process data.
Access to the process data takes place via the port blocks LP_MciIn and LP_MciOut (see FB
interconnection of the »Engineer«).
These port blocks are also called process data channels.
• The process data are not saved in the controller.
[11-1] External and internal data transfer between bus system, drive controller and function block interconnection
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