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The return value for options 0 and 6 is the machine name stored as a text value. If the name cannot be found it will return the internet address of the socket as a text string. Options 6 through 9 differ from options 0 and 2 through 4 only in the fact that they are buffered. This means that an initial inquiry will be made to the operating system and stored in a buffer, and after that, all inquiries will be handed the value stored in the buffer. This makes options 6 through 9 significantly faster than the other options, however, any online changes to the workstation's attributes will be not be discovered by options 6 to 9, only 0 and 2 to 4 would return the new values.
If using option 13 to activate optional filters, note that (as of VTScada version 11) TLS/SSL is the only one supported.
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