Table 19 defines the structure of an MDISDigitalInstrumentObjectType. 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 MDISDigitalInstrumentObjectType.
Subtype of the MDISBaseObjectType (see section 6.1.1)
0:HasComponent
Variable
State
0:Boolean
0:BaseDataVariableType
M, RO
0:HasSubtype
ObjectType
MDISDigitalOutObjectType
0:HasSubtype
ObjectType
MDISDigitalArbitrationObjectType
ConformanceUnits
MDIS Digital Instrument Base
State – The state of the instance of MDISDigitalInstrumentObjectType. This state is represented as a Boolean, where true indicates on and false indicates off.
The MDISDigitalInstrumentObjectType is a subtype of MDISBaseObjectType and inherit the FaultCodeVariable. The MDISDigitalInstrumentObjectType defines the standard FaultCodes (for bits 0-15 as defined in 6.2.2) in Table 8. All subtypes of this the MDISDigitalInstrumentObjectType will inherit all FaultCodes defined in this table. Subtypes may define additional FaultCodes in their own table.
Instrument has no usable value, there is an I/O fault.
The MDISDigitalInstrumentObjectType defines the standard WarningCodes (for bits 0-15 as defined in 6.2.2) in Table 9. All subtypes of this the MDISDigitalInstrumentObjectType will inherit all WarningCodes defined in this table. Subtypes may define additional WarningCodes in their own table.
