User manual

Klinkmann Automation SPA Bus Server 30
SPA Server Ver 1.x User Manual Rev 2.3 120XXM23
To uninstall “SPA OPC & DDE Server” NT Service, at first the Service must be stopped
by Control Panel/Services/Stop and then SPA Server must be started manually with
command line parameter "/DelService":
SPA /DelService
After this the SPA Server “OPC & DDE” version will be still registered and accessible to
OPC clients.
Using the SPA with OPCLink Server
The Wonderware OPCLink I/O Server (hereafter referred to as “OPCLink”) is a Microsoft
Windows application program that acts as a communication protocol converter and allows
other Windows application programs access to data from local or remote OPC servers.
OPCLink connects to OPC servers, converts client commands to OPC protocol and
transfers data back to clients using DDE, FastDDE, or Suite Link protocols.
Please refer to Wonderware OPCLink Server and OPC Browser User’s Guide for
details how to install, start and use the OPCLink Server. The following information in this
section covers only the most important points about using “OPC & DDE” version of SPA
Server with OPCLink Server.
OPCLink Topic Definition
The Topic Definition option from OPC Link Configure menu is used to create, modify, or
delete OPCLink topic definitions. If OPC Link will communicate with SPA Server then
there must be one or more topics defined for SPA Server. There are following important
fields on the “OPCLink Topic Definition” dialogue box:
Topic Name
Enter a unique name (e.g. Controller1) for the SPA device in this field. If using InTouch
then same Topic Name is to be entered in the "Add Access Name" dialogue box when
defining the Access Names for OPCLink Server in InTouch WindowMaker.
OPC Server Name
Select the name of the OPC server (SPA.OPC_Server) that will be used by this topic.
The list box shows the registered OPC servers in the system.
OPC Path
Enter the name of the OPC path (e.g. SPA02.) used by this topic. This OPC path is the
first part of a full OPC item name string common to all items that will be used in this topic.
The available OPC paths for SPA Server can be obtained by clicking on Browse button
(this allows to view the SPA Server’s exposed address space).
Update Interval
Enter the frequency (in milliseconds) that the server will acquire data for the items/points
associated with this topic. If 0 (zero) is entered here, OPCLink will not gather data from
SPA Server.
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