Open Platform Communications (OPC) data quality calculation

The Open Platform Communications (OPC) DA server calculates the data quality of each of the supported points, based on the OPC Data Quality Truth table. For all tables (Analog, Rate, Status, Tank, and Multistate):

• Flag.severity

• Flag.alarm

• Flag.alminh

• Flag.error

• Flag.offscan

• Flag.tag

• Flag.fresh

• Flag.manl

• Flag.msgtxt

• lastKrunchTime

Analog specific fields:

• Curval

Status specific fields:

• Cursta

Rate specific fields:

• Curate

• Accur

Tank specific fields:

• field.volume

• field.num_inc

• currentGO.volume

• currentGO.num_inc

• currentGS.volume

• currentGS.num_inc

• flevel

• GOflow_rate

• GSflow_rate

Multistate specific fields:

• inputCurRaw

OPC Data Quality Truth Table