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Support OPC-Server

Support OPC Server

Tani Opc Server

Overview: optimize OPC, OPC with Wonderware, SPS Programmänderungen, OPC Classic over OPC UA, OPC and Excel.

Question: If the plant reacts too slowly, how can i speed it up ?
Answer: Often the reason are a lot of long fields or error texts or recepture fields. This things are needed in the SCADA software only if the error or field condition changes. Normally this is true if the error index is changing. The SCADA software is registering the ling text for changing, a standard OPC server polls the long data for changes. Registering the data after the condition is changing will be too slowly also. This results in a heavily network load.
The solution for this: Define under "tables" "Wizard long data" a new optimizing. Call it "Error texts". Select the error index in group 1. In group 2 choose the long error text. The alias name which redirects the existing OPC item to the optimized element is created automatically.

Question: How Wonderware InTouch can use OPC ?
Answer: Please use this documentation. It can be found in the download area and in the manuals also.

Question: How the OPC server recognizes program changes in Rockwell CompactLogix and ControlLogix ?
Answer: The OPC Server checks each ten seconds for changes in the controller. If a change is detected it reorganizes internally all necessary things. But it is preferred not to write into the controller if the controller data elements are changed frequently. Reading data is secure always.

Question: Is there a way reaching OPC UA only devices with an OPC DA client ?
Answer: Yes. Please create in the Tani OPC server a connection to Your OPC UA device. In Your OPC DA client You will reach Your device normal with browsing: Tani OPC server, next is the connection to Your device. The rest works as normal as in other browsing.

Question: How a S7-1200 or S7-1500 can be accessed ?
Answer: Two variants exists:

With the new protocoll all variables as inputs, outputs, data block variables and flags will be browsed online. The old protocol and a S7 300/400 please use the item syntax or import the symbols from the Step7 project.

Question: How can i use OPC with Microsoft Excel ?
Answer: Please use this example.