You can use the symbol configuration to create symbol descriptions for project variables. Click “Project Add Object” to add a symbol configuration object to the device tree, and then define specific default settings. See dialog below: “Add Symbol Configuration”.
For providing symbols to an OPC UA Server, we recommend using the new configuration editor () for CODESYS CODESYS 3.5 SP18 and higher.
Double-click the “Symbol Configuration” object to open the symbol configuration editor.
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Dialog: Add Symbol Configuration
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Symbol configuration editor
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Dialog: Comments and Attributes
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Setting: Configure synchronization with IEC tasks
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Support for the current configuration and possible corrective actions
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Examples for the data layout types