OPC Toolbox™

opcqstr - Convert OPC quality ID into readable string

Syntax

QualityStr = opcqstr(QualityID)

Description

QualityStr = opcqstr(QualityID) constructs a quality string from a quality ID, stored in the QualityID property of a daitem object. The string is of the form 'Major Quality: Quality Substatus: Limit Status'. The Limit Status part is omitted if the limit status is set to Not Limited. For information on each of the quality parts, see opcqparts.

If QualityID is specified as a vector or matrix of quality IDs, then QualityStr will be a cell array having the same size as QualityID.

For more information on quality values, see OPC Quality Strings.

Examples

Construct the quality string from the quality ID of the item Random.Qualities on a Matrikon™ OPC Simulation Server.

da = opcda('localhost','Matrikon.OPC.Simulation');
connect(da)
grp = addgroup(da);
itm = additem(grp, 'Random.Qualities'); 
qualitystr = opcqstr(itm.QualityID)

See Also

get, opcqid, opcqparts

opcqparts

opcread