Lenze Controller-based Automation - Manual (Page 49)

Lenze · Controller-based Automation · System Manual · DMS 1.4 EN · 04/2014 · TD17
49
5 System architecture
5.2 Online connection via the gateway function of the controller via CAN/EtherCAT
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Advantage Disadvantage
A simple connection without fieldbus-specific adapters
is possible.
The controller ...
• s the master for the fieldbus.
• controls the real-time capability of the bus.
• controls the access to the fieldbus. This ensures that
the fieldbus is always available for the control if
required.
• The gateway function can only be used after an
executable PLC program (with the »PLC Designer«)
has been loaded and started in the controller..
• The communication speed between the Engineering
PC and the controller is lower than in a direct
connection.
 Direct connection ( 50)