Location5 is the Bailey point type. This defines the kind of Bailey point sending or receiving the data. See list of available types in the Bailey Point Types section.
InstrumentTag
The PI Bailey SemAPI interface does not use the InstrumentTag attribute.
ExDesc
Length
The length of the Extended Descriptor field is limited by the version of the PI API, the version of the PI Server, and sometimes by a specific Interface. The table below explains this in more detail. When the maximum possible lengths differ for the software installed on site, the shortest length applies.
Some Bailey function types provide multiple fields of information (e.g. RCMs, Device Drivers). It is possible to retrieve any subset or all of these fields of information into a single PI tag or into multiple PI tags. The fields can be retrieved into a single PI tag in any order. The user specifies the field number and the extraction order by using the keyword /BLY=# or /BLY=#,#,# in the Extended Descriptor of the PI tag. Data retrieved in this manner are referred to as extended attributes in the rest of this manual. Here are a few examples:
