![]() You can download the OPC Core Components Redistributable from the OPC Foundation's website. ![]() dll package provided by the OPC Foundation (called the OPC Core Components. Necessary Preliminary Steps - Install OPC Core Components Due to the complications that Windows DCOM security settings can cause, this set-up guide is followed by the Troubleshooting OPC-COM Connections section that deals with an overview of how to deal with a faulted server connection due to DCOM security settings as well as other possibilities. This section provides a brief walk-through of how to set-up a new Local or Remote OPC-DA server connection using the COM module. All subscriptions to the server will use the same connection. ![]() Connections to OPC servers will be held open while the Ignition gateway is running. If you have an OPC server that is not capable of accepting OPC-UA connections and you need to talk to a PLC for which Ignition has no supported driver, then you'll have to use the OPC-COM module to make your device data available in Ignition. The OPC-COM module provides the ability to connect to OPC servers that only communicate using the older COM based OPC-DA standard. For other operating systems, OPC-UA must be used. Therefore, the information in this section only applies to Ignition gateways installed on Windows. Classic OPC is based on COM, which is a technology in Microsoft Windows.
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