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How to use OPC Server in InTouch 8.1 (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.
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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.
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How to Start OPCLink |
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Select Program->Wonderware FactorySuite->I/O Servers->OPCLink from Start Menu. OPCLink is started. |
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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 Name
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. |
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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".
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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.
# When you use OPCLink, add the identification character to the head of tag name (item name).
Add "i" for integer type, "d" for boolean type, "r" for real type, and "m" for message type.
These are special decisions of OPCLink. |
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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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Sample
InTouch (OPCLink)
Manual/Demo
