Lenze Controller-based Automation - Manual (Page 28)

4 System description
4.2 System components
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Lenze · Controller-based Automation - Visualisation · System Manual · DMS 1.5 EN · 04/2014 · TD17
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4.2.4.2 Access to the control system and the field devices connected
• When using the Lenze control technology, the visualisation can directly access the field devices
without any further impact, using the Industrial PC as gateway. When different control systems
are used, this is usually not possible. Therefore it is recommended to only use data of the
controller.
• To display field device data in the visualisation, the controller must import these data cyclically
and transfer them to a transfer section (e.g. a data block) which is only accessed by the
visualisation. This ensures field device data access without any further effects.