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When a GA request is received by the WinCC OA, this is signaled to the Event Manager. The relevant data can then be sent by a Control script, allowing one to configure the response to a GA request received by WinCC OA. |
If the SSI driver is being operated in redundant mode, then the failure of one of two mutually redundant connections not only causes an error message, but also initiates a GA automatically, since when switching over connections a potential time difference can lead to data loss. Automatic general query at a driver start or at redundancy switchThe driver does not execute a general query when establishing the connection or at a redundancy switch.
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V 3.11 SP1
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