Pi bailey Sem api interface Manual
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PI BASemAPI, UniInt Interface User Manual
SourceTagSource Tag is used only for the output points. It is the PI tag from which the output points get the values to send to Infi90. For example, the source tag can be a performance equation calculation tag or a lab (manual input) tag. When the source tag is not defined for an output point, the interface will get the output value from the output tag snapshot. In this case, the user is responsible for updating the value directly. Note: The source tag should have the same PI point type as the output tag in order to assure that the correct value is sent to Bailey. However, it is not necessary that the tag be a real (integer or digital) type in order to send analog or digital data to Bailey, respectively. ShutdownThe shutdown attribute is used only if the server node is a PI 3 system. The Shutdown attribute is 1 (true) by default. The default behavior of the PI Shutdown subsystem is to write the SHUTDOWN digital state to all PI points when PI is started. The timestamp that is used for the SHUTDOWN events is retrieved from a file that is updated by the Snapshot Subsystem. The timestamp is usually updated every 15 minutes, which means that the timestamp for the SHUTDOWN events will be accurate to within 15 minutes in the event of a power failure. For additional information on shutdown events, refer to PI Data Archive for NT and UNIX. Note: The SHUTDOWN events that are written by the PI Shutdown subsystem are independent of the SHUTDOWN events that are written by the interface when the /stopstat command-line parameter is specified. One can disable SHUTDOWN events from being written to PI when PI is restarted by setting the Shutdown attribute to 0 for each point. Alternatively, one can change the default behavior of the PI Shutdown Subsystem to write SHUTDOWN events only for PI points that have their Shutdown attribute set to 0. To change the default behavior, edit the \PI\dat\Shutdown.dat file, as discussed in PI Data Archive for NT and UNIX. BufservIt is undesirable to write shutdown events when Bufserv is being used. Bufserv is a utility program that provides the capability to store and forward events to a PI Server, allowing continuous data collection when the Server is down for maintenance, upgrades, backups, and unexpected failures. That is, when PI is shutdown, Bufserv will continue to collect data for the interface, making it undesirable to write SHUTDOWN events to the PI points for this interface. Download 2.52 Mb. Share with your friends:
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