{"id":22725,"date":"2023-02-13T13:20:35","date_gmt":"2023-02-13T12:20:35","guid":{"rendered":"https:\/\/alarm-it-factory.de\/?page_id=22725"},"modified":"2025-06-17T10:25:49","modified_gmt":"2025-06-17T08:25:49","slug":"agent-for-opc-da","status":"publish","type":"page","link":"https:\/\/alarm-it-factory.de\/en\/alarmcontrolcenter\/komponenten\/agenten\/agent-fuer-opc-da\/","title":{"rendered":"Agent for OPC DA"},"content":{"rendered":"
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Interface between OPC Data Access and the
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The ACC's OPC DA agent<\/strong> forms the interface between a configurable OPC DA server and the Alarm Control Center. The OPC DA agent connects to the OPC DA server<\/strong> and cyclically queries the values of OPC items. If a value meets a predefined condition, the agent forwards the information to the Alarm Control Center and the alerting process starts.<\/p><\/div><\/div><\/div><\/div><\/div>

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\"Agent<\/div><\/figure><\/div><\/span>

The ACC's OPC DA agent<\/strong> forms the interface between a configurable OPC DA server and the Alarm Control Center. The OPC DA agent connects to the OPC DA server<\/strong> and cyclically queries the values of OPC items. If a value meets a predefined condition, the agent forwards the information to the Alarm Control Center and the alerting process starts.<\/p><\/div><\/div><\/div><\/div><\/div>

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Interface between OPC Data Access and the Alarm Control Center <\/span><\/h2>\n\t<\/div>\n<\/div>\n\n
<\/span>

The ACC's OPC DA agent<\/strong> forms the interface between a configurable OPC DA server and the Alarm Control Center. The OPC DA agent connects to the OPC DA server<\/strong> and cyclically queries the values of OPC items. If a value meets a predefined condition, the agent forwards the information to the Alarm Control Center and the alerting process starts.<\/p><\/div><\/div><\/div><\/div><\/div>

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\"Agent<\/div><\/figure><\/div><\/div><\/div><\/div>
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\"Agent<\/div><\/figure><\/div><\/span>

The ACC's OPC DA agent<\/strong> forms the interface between a configurable OPC DA server and the Alarm Control Center. The OPC DA agent connects to the OPC DA server<\/strong> and cyclically queries the values of OPC items. If a value meets a predefined condition, the agent forwards the information to the Alarm Control Center and the alerting process starts.<\/p><\/div><\/div><\/div><\/div><\/div>

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Alerting process through OPC items<\/span><\/h3>

To configure the OPC DA agent, the OPC items to be checked are defined along with a condition. If this condition is met or violated, the agent generates a corresponding message and forwards it to the Alarm Control Center (ACC). The ACC then initiates the alerting process and informs the specified recipients.<\/p>

The alert status of a message can also be reported back to the OPC server by the OPC DA agent.<\/p><\/div><\/div><\/div><\/div><\/div>

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Alerting process through OPC items<\/span><\/h3>

To configure the OPC DA agent, the OPC items to be checked are defined along with a condition. If this condition is met or violated, the agent generates a corresponding message and forwards it to the Alarm Control Center (ACC). The ACC then initiates the alerting process and informs the specified recipients.<\/p>

The alert status of a message can also be reported back to the OPC server by the OPC DA agent.<\/p><\/div><\/div><\/div><\/div><\/div>

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Querying OPC items<\/span><\/h3>

The OPC items are queried by the OPC server after a defined time interval. Both the current value and the previous value are taken from the OPC DA Agents<\/strong> temporarily stored for subsequent evaluations.<\/p>

The following OPC items are queried:<\/p>