WinCC/Connectivity Pack and Connectivity Station
Access to WinCC using OPC & WinCC OLE-DB
In WinCC, non-proprietary communication in the field of automation has always
been very important.
WinCC has as standard an integrated OPC DA 3.0 server (Data Access) that
gives you access to all the online values in the system and, on the other hand,
can as a client read data from another application - across the Web too. The
WinCC/ Connectivity Pack offers additional options. This means that the system
can transfer pre-processed process and production data to higher level systems
for information conditioning (e.g. Manufacturing Execution Systems, Enterprise
Resource Planning systems or office packages, e.g. Microsoft Excel, Microsoft
Access, etc.)
Benefits
- Simple IT and business integration by means of standard interface.
- Access to online and historical data from any computers you like via
standard interfaces.
(OPC XML DA, OPC HDA, OPC A&E, WinCC OLE-DB)
- Further processing or analysis of data using separate tools is
possible.
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Access to messages and historical data via OPC / WinCC OLE-DB
The WinCC/Connectivity Pack includes the OPC HDA 1.1 (Historical Data
Access) and OPC A&E 1.0 (Alarm & Events) servers for accessing historical
data of the WinCC archive system or for transferring/acknowledging messages. As
an OPC XML DA 1.0 server, WinCC can even send data on a cross-platform
basis across the Web to PPS/MES systems; in the opposite direction, it can take
OPC XML DA client order or recipe data.
As an HDA server WinCC makes available historical data from the WinCC archive
system to other applications. The OPC client (e.g. a reporting tool) can specify
the start and end times of a time interval and thus selectively request the data
to be transferred. Apart from this, the client can request already conditioned
data from the HDA server, i.e. actively trigger data compression before the data
is transferred. The OPC HDA server can also be used in redundant configurations.
Fig. WinCC/ConnectivityPack: Access to WinCC via OPC & WinCC OLE-DB
In OPC A&E, the system displays a WinCC message as an alarm and, together with
all the ancillary process values, passes it on to any subscribers on the
production or company management levels. Due to the filter mechanisms and
subscriptions, the system only transfers selected, changed data. It is, of
course, also possible to carry out acknowledgement at the MES or ERP level.
The WinCC OLE-DB Provider makes it possible to directly access the
archive data that WinCC stored in the Microsoft SQL Server database (alarms,
process values, user data). In this connection, you can even use statistic
functions. From a WinCC multi-client, a transparent process data access via the
OLE DB is now also possible to redundant WinCC systems and distributed
configurations with central archive server. For the addressing, only the
symbolic computer name is needed.
WinCC/Connectivity Station
If process visualization is not needed at a station, you can use this WinCC
option package to confi gure any Windows computer you like as a connectivity
station with access to WinCC via OPC and WinCC OLE-DB without needing a WinCC
installation to do so.
Client Access Licenses (CAL)
To directly access current WinCC data via OPC DA, you do not need a separate
license. You always need WinCC/CAL whenever you want to access WinCC data
across the interfaces of the options WinCC/Connectivity Pack and
WinCC/IndustrialDataBridge from any computer which has not installed (and
licensed) neither the basic WinCC system nor a WinCC option.
If desired, the WinCC/CAL pro Processor License even provides access for
all the computers in your confi guration to the interfaces of the Connectivity
Pack or allows them to use the IndustrialDataBridge.
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