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SCADA setting Wonderware InTouch(OPCLink)

It introduces the setting when our OPC Server is used with OPCLink in "InTouch 8.1" of Wonderware. Our company doesn't answer details concerning the setting of SCADA, so please get the inquiry in the SCADA vendor or the shop.

How to Install OPCLink

It is necessary to install "OPCLink" that is gateway driver that converts the protocol of DDE/SuiteLink and OPC so that InTouch may access OPC Server. OPCLink is stored in CD written "Device Integration Products" of the FactorySuite product. Select "I/O Servers" and install "OPCLink" when the installer starts.

How to Start OPCLink

Start "Topic Definition" from "Configure" menu of OPCLink, and set the following four main items. Set other items properly. It is no problem even like default.

Setting of Topic

Start "Topic Definition" from "Configure" menu of OPCLink, and set the following four main items.
Set other items properly. It is no problem even like default.

[Topic Name]   Specify the Topic Name of DDE.
[Node Nam]   Specify the Node Name that OPC Server works. It is possible to omit it when operating on same PC.
[OPC Server Name] Select ProgID of OPC Server from drop down list.
[OPC Path]   Specify "Device Name" of OPC Server, and added "." (dot) to the tail.

Now the setting of OPCLink is completed. OPCLink is left started before InTouch Viewer is executed.
Even if OPC Server doesn't start, it automatically stands up according to the demand from OPC Client.

Definition of InTouch Access Name

Select "Access Name" from "System" menu of InTouch. The screen in figure below opens when you click "Addition", so define access name for OPC.

[Access Name]   Specifiy an arbitrary name defined in InTouch.
[Application Name] Input "OPCLink".
[Topic Name]   Specify the topic name defined in OPCLink.
[Protocol]   Select "DDE" or "SuiteLink".

Definition of InTouch Tag Name

Specify tag name accessed OPCLink from InTouch.

[Tag Name]   Specify tag name like "i" + PLC Device Name + PLC Device Number.
[Tag Type]   If the tag type is integer, specify "I/O Integer".
[Access Name] Specify the access name to connect to OPCLink.

Execute

When InTouch is executed, it is understood to acquire the value and the quality flag from the OPC Server normally. Moreover, on the screen of OPCLink, one tag is registered in the topic "PLC1", and it can be confirmed to communicate normally.

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