User Guide User Manual

Startup Command File
60
Optional Tab
Apply tag’s compression specifications to data retrieved during history
recovery.
Use compression specifications in tag configurations to send data retrieved during history
recovery with compression. Usually data is retrieved from source server and sent to receiving
server without compression during history recovery. (/DC)
Source tag definition attribute.
Use TagName on both (Ignoring ExDesc and InstrumentTag point attributes). Do not check
the InstrumentTag, ExDesc, or UserInt1 attributes for source tag definitions. Use
TagName to identify the point on both source and receiving Historian Servers. (/TN)
Use ExDesc or TagName (Ignoring InstrumentTag point attribute). The source tag definition
will be found in the ExDesc or TagName attribute. Ignore the InstrumentTag and
UserInt1 attributes. This parameter is useful for PI2 to PI3 migrations. (/TNEX)
Use UserInt1 (Ignoring ExDesc and InstrumentTag point attributes). The source tag
definition will be found in the UserInt1 attribute. Ignore the ExDesc, InstrumentTag,
and Tag point attributes. (/PTID)
The How PItoPI Finds Source Points section explains how the interface parameters affect
which receiving tag attributes are used for mapping to the source point and the order that the
attributes are searched for a mapping.