Assortment / System Description

Trend data storage
Fully integrated trend data stores real-time (online) and historical (offline) data. The
trend functions allow the operator to monitor and fine tune plants.
The Desigo system uses trend log objects per BACnet standard; the objects are
accessible by any other client.
Gathering options: Query, change of value (COV)
Trend options: Continuously, one-time pass, defined timeframe.
Trend graphics can also be displayed on the PXM30/40/50 touch panels and
Desigo Control Point web clients.
Access rights to data
Access rights are comfort functions to filter information by the individual needs of
the customer. In other words, resident engineers or service engineers, for example,
only have access to the information on a strict-need-to-know basis.
Only authorized personnel can access operator units and requires a name and
password. The access rights can also be assigned in detail, down to individual data
points. Desigo uses the following access levels:
● Internal, extended service, and basic service
● Administrator, extended operation, and basic operation
Handing certificates and IT security
Digital certificates ensure the IT security of the control system. This applies for both
the built-in web-server and https communication while encrypting BACnet traffic
using the BACnet/SC option. Handling of the appropriate certificates is an integral
part of the engineering process; the ABT tool allows for easy handling of these
tasks without special know how.
A family of programmable automation stations
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