PointSource The is a unique, single or multi-character string that is used to identify the PI PointSource point as a point that belongs to a particular interface. For example, the string Boiler1 may be used to identify points that belong to the MyInt Interface. To implement this, the attribute would be set to Boiler1 for every PI point that is configured for the PointSource MyInt Interface. Then, if /ps=Boiler1 is used on the startup command-line of the MyInt Interface, the Interface will search the PI Point Database upon startup for every PI point that is configured with a of Boiler1. Before an interface loads a point, the interface PointSource usually performs further checks by examining additional PI point attributes to determine whether a particular point is valid for the interface. For additional information, see the /ps parameter. If the PI API version being used is prior to 1.6.x or the PI Server version is prior to 3.4.370.x, the is limited to a single character unless the SDK is being used. PointSource Case-sensitivity for PointSource Attribute The character that is supplied with the /ps command-line parameter is not case PointSource sensitive. That is, /ps=P and /ps=p are equivalent. Reserved Point Sources Several subsystems and applications that ship with PI are associated with default characters. The Totalizer Subsystem uses the character T, the PointSource PointSource Alarm Subsystem uses G and @, Random uses R, RampSoak uses 9, and the Performance Equations Subsystem uses C. Do not use these characters or change the Point Source default point source characters for these applications. Also, if a character is PointSource not explicitly defined when creating a PI point; the point is assigned a default PointSource character of Lab (PI 3). Therefore, it would be confusing to use Lab as the PointSource character for an interface. Note: Do not use a character that is already associated with another PointSource interface program. However it is acceptable to use the same point source for multiple instances of an interface.
PointSource The PointSource is a unique, single or multi-character string that is used to identify the PI point as a point that belongs to a particular interface. For example, the string Boiler1 may be used to identify points that belong to the MyInt Interface. To implement this, the PointSource attribute would be set to Boiler1 for every PI point that is configured for the MyInt Interface. Then, if /ps=Boiler1 is used on the startup command-line of the MyInt Interface, the Interface will search the PI Point Database upon startup for every PI point that is configured with a PointSource of Boiler1. Before an interface loads a point, the interface usually performs further checks by examining additional PI point attributes to determine whether a particular point is valid for the interface. For additional information, see the /ps parameter. If the PI API version being used is prior to 1.6.x or the PI Server version is prior to 3.4.370.x, the PointSource is limited to a single character unless the SDK is being used. Case-sensitivity for PointSource Attribute The PointSource character that is supplied with the /ps command-line parameter is not case sensitive. That is, /ps=P and /ps=p are equivalent. Reserved Point Sources Several subsystems and applications that ship with PI are associated with default PointSource characters. The Totalizer Subsystem uses the PointSource character T, the Alarm Subsystem uses G and @, Random uses R, RampSoak uses 9, and the Performance Equations Subsystem uses C. Do not use these Point Source characters or change the default point source characters for these applications. Also, if a PointSource character is not explicitly defined when creating a PI point; the point is assigned a default PointSource character of Lab (PI 3). Therefore, it would be confusing to use Lab as the PointSource character for an interface. Note: Do not use a PointSource character that is already associated with another interface program. However it is acceptable to use the same point source for multiple instances of an interface.
PI_RDBMSPI_3.21.4.30.docx