The ActiveProgramType specifies the current state of operation of a FunctionalUnit. It provides context and information about the currently active program on the Device. This allows users to follow the progress of a program run in a standardized fashion by organising steps into a flat, linear sequence. It is formally defined in Table 65.

Table 65 – ActiveProgramType Definition

Attribute	Value
BrowseName	ActiveProgramType
IsAbstract	False
References	Node Class	BrowseName	DataType	TypeDefinition	Other
Subtype of 0:BaseObjectType defined in OPC 10000-5
0:HasProperty	Variable	CurrentPauseTime	Duration	0:PropertyType	O
0:HasProperty	Variable	CurrentRuntime	Duration	0:PropertyType	O
0:HasProperty	Variable	CurrentStepName	LocalizedText	0:PropertyType	O
0:HasProperty	Variable	CurrentStepNumber	UInt32	0:PropertyType	O
0:HasProperty	Variable	CurrentStepRuntime	Duration	0:PropertyType	O
0:HasProperty	Variable	EstimatedRuntime	Duration	0:PropertyType	O
0:HasProperty	Variable	EstimatedStepNumbers	UInt32	0:PropertyType	O
0:HasProperty	Variable	EstimatedStepRuntime	Duration	0:PropertyType	O
0:HasProperty	Variable	DeviceProgramRunId	String	0:PropertyType	O
0:HasProperty	Variable	CurrentProgramTemplate	3:NameNodeIdDataType	0:PropertyType	O
Conformance Units
LADS ActiveProgramType

The status of all properties must be communicated through various StatusCodes, depending on the situation:

• For a device that has not had a prior run and therefore cannot estimate the runtime, the StatusCode should be BadWaitingForInitialData. This indicates that the system is waiting for initial data to compute the estimated runtime.

• If the runtime cannot be estimated due to process-related reasons or incompatibility, the StatusCode should be BadNoData. This communicates that no data is available to estimate the runtime.

• If the runtime can be computed and the program is currently running or paused, the StatusCode should be Good. This indicates that the estimated runtime is available and the program is in progress.

• If the runtime can be computed after the program run but the value might not be the most current, the StatusCode should be UncertainLastUsableValue. This communicates that the last known value is being used for the estimated runtime, but it may not be the most up to date.

Additional StatusCodes are allowed depending on the specific situation (e.g., technical problems).

CurrentPauseTime is the current pause-time of the program run. The CurrentPauseTime is set to 0 at the start of the program and is counted upwards when the program run is in a paused state. The paused state is an aggregation of the Suspended and Held states.

CurrentRuntime is the current runtime of the program run. The CurrentRuntime is set to 0 at the start of the program and is counted upwards, as long as the program run is not in a paused state. The paused state is an aggregation of the Suspended and Held states.

CurrentStepName is the name of the current step.

CurrentStepNumber is the number/index of the current step (incremented whenever the next step is entered).

CurrentStepRuntime is the runtime of the current step. The CurrentStepRuntime is set to 0 at the start of the current step and is counted upwards, as long as the program run is not in paused state. The paused state is an aggregation of the Suspended and Held states.

EstimatedRuntime is the estimated runtime of the current program run.

EstimatedStepNumbers is the estimated total number of steps of the current program run.

EstimatedStepRuntime is the estimated runtime of the current program step.

CurrentProgramTemplate provides the template-id as well as the node-id of the currently executed program.

DeviceProgramRunId represents a device-specific unique internal identifier for this program run. Its value shall be identical to the return value of the last call to the FunctionalUnit’s StartProgram() Method. It is used to identify the result object corresponding to this program run within the FunctionalUnit’s result set.