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F e a t u r e s
The OPC Office Link application consists of two computer
programs: OPC Office Link Stand-Alone/Client and OPC Office Link
Server. You can buy a license of OPC Office Link Stand-Alone/Client by
itself, or you can buy it together with an OPC Office Link Server license. The
combination is called OPC Office Link Client/Server.
OPC Office Link Stand-Alone/Client works independently
from OPC Office Link Server or as a client of OPC Office Link Server. It has
the full functionality to link live OPC data into spreadsheets from local or
remote OPC servers, and allows for user-controlled sampling into ODBC
databases or text files. You can upgrade later to OPC Office Link Client/Server for extended
functionality if required.
OPC Office Link Client/Server allows for centralized,
user-independent sampling via a Windows service. With OPC Office
Link Client/Server the sampling process can be started through the client's
user interface on the server machine or remotely across the network. Sampling
continues controlled by OPC Office Link Server, even after logging out of
Windows. With OPC Office Link Server sampled data can also be distributed
directly via integrated Web service or to linked applications such as
spreadsheets on network computers.
The feature list on the right helps you decide if you
should choose OPC Office Link Stand-Alone/Client or OPC Office Link
Client/Server. You can also download OPC Office
Link for a trial run.
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C o m p a r i s o n
Core Features
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Feature |
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OPC Office Link Stand-Alone/Client |
OPC Office
Link Client/Server |
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No OPC server connection limit |
There is no limit on the number of OPC connections you can use
with OPC Office Link. |
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No tag limit |
There is no limit
on the number of OPC tags you can use with OPC Office Link. |
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Remote OPC
Server access |
Browse the
network neighborhood OPC servers to connect
to OPC servers on other computers, for example to factory-floor computers on
the Intranet. All sampling modes plus Copy & Paste of data links into Excel are
also supported for remote OPC servers. |
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Partial
tag address space browsing |
Only the newly entered
branch of the address space is requested from the server in a network friendly
way. This, in combination with browse filters, makes working with servers that
offer a great number of OPC items easy. |
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Live Data
display |
Live value display capabilities have
been added to provide a more generic tool for all OPC Office Link integration
needs. |
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Automatic
re-connect |
OPC Office Link
re-connects automatically to OPC servers and databases should the connection be
lost. |
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Data Sampling Features
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Feature |
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OPC Office Link Stand-Alone/Client |
OPC Office
Link Client/Server |
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Click
& Sample into ODBC databases or text/CSV files |
Log data into MS
Access, SQL Server, Oracle, MySql, and other ODBC database or
into Comma Separated Value text files; choose
from synchronous, asynchronous or trigger-based sample modes. |
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Create
tables
automatically
or manually |
Database
table
structures for data collection with matching field names and data types
can be
automatically created or user defined |
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Sampling
of arrays |
OPC Office Link supports
data logging of OPC arrays. The maximum number of array elements is limited only by
the number of supported table fields of the database in use. |
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Automatically
delete old data |
OPC Office Link allows
you to specify when old sample records should be deleted from the database.
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Custom
queries |
Use
your own queries for storing samples. Simply type your query and use place
holders where actual OPC item values, timestamps or qualities are to be
substituted. |
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Database
to device sampling |
Configure
OPC Office Link to sample data from the database and write value changes back
to the device. This gives database applications write access to the device
without any additional programming. |
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Recipe
Transfers |
OPC Office Link supports
device-controlled data transfers from the database to the device ("recipe
transfers"). Initiated by the device, data sets are looked-up and read from the
database, then written back to the device via the OPC server. |
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Sampling
Schedule |
Specify the times when
logging of data should take place
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E-mail
Alerts |
Send e-mail alerts when a sampling
error occurs or when no new data has become available for a defined period of
time. |
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OPC Office Link Server Client to manage data collection |
Use
OPC Office Link Stand-Alone/Client to connect to OPC Office Link Servers
elsewhere on the network and control or monitor the data collection process
remotely. |

(client only) |
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Live Data Linking / Excel Linking Features
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Feature |
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OPC Office Link Stand-Alone/Client |
OPC Office
Link Client/Server |
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Copy &
Paste live data links into spreadsheets |
Copy & Paste live data into Excel, Word and other OLE-link-capable applications
from local OPC servers or OPC servers on a different computer. |
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Link individual items or groups of items |
Copy links for individual items or efficiently copy whole groups of
1000s of items
as a single link. |
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Link OPC array
tags |
OPC Office Link
supports linking of arrays. |
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Configurable link update rate |
Update link data
at a configurable rate. |
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Switch between OPC server hosts |
Design spreadsheets pointing to one OPC server host and change to
a different host later without modifying the spreadsheet. |
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Historic
Links |
Link
historical values to show values-over-time charts or X/Y charts in your
spreadsheet. |
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Function Library |
Use the OPC
Office Link function library to easily extend the spreadsheet functionality with
macros; i.e. read/write cells or cell ranges from/to to the OPC server on the
click of a button. |
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OPC Office Link Server Client to retreive data for live data links |
Use OPC Office Link
Stand-Alone/Client to connect to OPC Office Link Servers elsewhere on the
network and retreive data for data links from OPC Office Link Server. |

(client only) |
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Web Services
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Feature |
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OPC Office Link Stand-Alone/Client |
OPC Office
Link Client/Server |
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Integrated
Http Web server |
Access HTML or XML
formatted data from anywhere in your office. Simply point your browser to the
OPC Office
Link Server computer to view sampling states and latest snapshots of sampled tags. Use XML
formatted data to prepare a view of current tag values in your own layout. |
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Automatically create ASP
Web Pages |
Automatically create Active Server
Web pages for use with Internet Information Server or integrated Web server to
retrieve samples from the database for Web presentation. |
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.NET Web Service
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Relay data to business systems via a .NET Web Service interface;
.Net clients are able to read or write OPC server tags through the Web service
interface. |
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Miscellaneous Features
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Feature |
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OPC Office Link Stand-Alone/Client |
OPC Office
Link Client/Server |
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Script
& Macro programming |
Use the provided function library to
read and write OPC tags with one line of code. Delphi, Visual Basic and other
programming languages can also be used to access OPC Office Link as an
Automation Server. This way it is possible to start and stop sampling
externally controlled via a few lines of, for example, Visual Basic code.
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Run as
Service |
OPC Office Link Server runs independent
of users logged in; this allows automatic re-start of sampling processes after
re-boot |
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Event Log |
View OPC Office Link Server sampling
events locally or across the network using OPC Office Link
Stand-Alone/Client |
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OPC server
redundancy |
Switch between primary
and secondary OPC server hosts as the data source for data collection in case of a failure or
controlled by a trigger. |
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OPC data
bridge |
Sample data into a
database table row from one OPC server and transfer the data from the database
to a different OPC server. |
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OPC Server
interface |
OPC Office Link Server
is also an OPC DA 1.0 and OPC DA 2.0 compliant OPC server that exposes OPC tags to
control and monitor sampling processes. |
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Individual
auto-start settings |
Configure database
authorization settings for auto-start data groups individually. |
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