Connection in Database

Diagrams User Guide

Diagrams : Piping & Instrumentation Diagrams (P&IDs) : Instrumentation : Connection in Database

Connection in Database

Schematic Instrument Reference (SCIREF)

Offline instruments and actuators can refer to other offline instruments, as well as equipments, actuators and other pipe components. This reference is called schematic instrument reference (SCIREF).

There are pseudo attributes used for querying SCIREF as described below.


SCIREF	Attribute executed on SCOINS, points to SCVALVE (returns all items that are connected via SCIREF).
SCIREL	Pseudo attribute executed on SCVALVE, points to SCOINS (returns all items where SCIREF points to this SCVALVE).

Note:

There is one more pseudo attribute called SCEIRE that returns the sum of SCIREF and SCIREL.

For Actuators and Offline Instruments there is a possibility to query on only references to elements of a particular type (process or instrumentation). To get such information the following pseudo attributes should be used:


SCIPRE	Returns a list of all process elements (equipments, sub-equipments, nozzles and elements placed below SCPLIN) referenced by Actuator or Offline Instrument via SCIREF.
SCIIRE	Returns a list of all instrumentation elements (Actuators, Offline Instruments and elements placed below SCILIN) referenced by Actuator or Offline Instrument via SCIREF.

A list of corresponding connection types is returned by SCIPRT, for process connections, and SCIIRT, for instrumentation connections, pseudo attributes described in the next chapter.

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