Table 32 defines the structure of an MDISInstrumentOutObjectType. Any vendor specified properties that have been implemented within a project should be documented within a similar format and supplied to the DCS vendor. The addition of vendor specific properties will result in a subtype of the MDISInstrumentOutObjectType.

Table 32 – MDISInstrumentOutObjectType Definition

Attribute	Value
BrowseName	MDISInstrumentOutObjectType
IsAbstract	False
References	Node Class	BrowseName	DataType	TypeDefinition	Other
Subtype of the MDISInstrumentObjectType
0:HasComponent	Method	WriteValue	See 6.5.5		M
ConformanceUnits
MDIS Instrument Out Base

WriteValue – This Method allows a Client to change the value of ProcessVariable on an instance of MDISInstrumentOutObjectType. The Method will return any errors that occurred on setting the value. If the Instrument is disabled, an error Bad_InvalidState shall be returned. The Client shall verify that the ProcessVariable actually changed to confirm the update.