
- #Factorysoft opc client serial
- #Factorysoft opc client software
- #Factorysoft opc client code
- #Factorysoft opc client series
ReadReqList.Items( 1) = New localhost.ReadRequestItem ' item 2 ReadReqList.Items( 0).ItemName = " Test/Integer" ReadReqList.Items( 0) = New localhost.ReadRequestItem ' item 1 ReDim ReadReqList.Items( 1) ' Item request list for 2 items ReqOptions.ReturnItemName = True ' Data structures for an XML-DA Read call, initialized to read 2 items Dim ReadReqList As localhost.ReadRequestItemList = New ReadRequestItemList Srv.Url = " " Dim ReqOptions As localhost.RequestOptions = New localhost.RequestOptions ' create the server object and set the call options Dim Srv As localhost.OpcXmlDA = New localhost.OpcXmlDA The XML-DA Read function is self contained and not dependent on any previous calls.
#Factorysoft opc client code
The code snippet shown below uses the Read function to periodically read the value of two items from the server. XML-DA has a stateless design that fits well into ASP.NET applications. Desktop and ASP.NET applications can access OPC XML-DA servers in the same way. VB and C# applications typically use the. NET based OPC XML DA servers a clients can be downloaded. Read the XMLDA.NET White Paper for a description of how web services differ from DCOM and how this influences the design of client applications. NET web services support, the HTML/ASP scripts use the MSSOAP toolkit. The sample client applications show how the Read and Subscribe/ Poll functions are used from different kinds of applications. Developers of OPC client applications have to be aware of these differences.
#Factorysoft opc client serial
Modbus and Uni-Telway serial device connections require a Schneider Electric or other serial gateway.The OPC XML-DA standard and the currently widely used OPC DA V2 standard address the same tasks but the server interface is quite different, due to their different base, web services respectively DCOM.

#Factorysoft opc client series
#Factorysoft opc client software

OFS supports concurrent multi-device communications and the simultaneous use of multiple communication protocols and provides client applications with a set of highly available services for accessing control system devices via physical address or symbols. OPC Factory Server (OFS) is a standards compliant server application allowing open, real time access to Schneider Electric automation and electrical distribution devices connected to Ethernet networks or fieldbuses.
