B.1 Signal Mapping

In the past, machine tool builders typically provided legacy interfaces defined by leading customers in a similar way. Often these interfaces were quasi-standardized as they were integrated in the PLC libraries of the leading control manufacturers. The signal names were often the same.

The following table gives an overview how the standardized variables of OPC 40501-1 could be mapped to these legacy signals.

Legacy Signal Variables defined by OPC 40501-1 v1.00 Additional variables defined by OPC 40501-1 v1.01
Number of total parts(Not identical to legacy signal) ProductionStatisticsType/
PartsProducedInLifetime		 ProductionJobType/
PartsCompleted
Number of good parts(Not identical to legacy signal) the information to each part
ProductionPartType/
PartQuality		 ProductionJobType/
PartsGood
Number of scrap parts(Not identical to legacy signal) the information to each part ProductionPartType/
PartQuality

Can be calculated directly from

ProductionJobType/
PartsCompleted

minus

ProductionJobType/
PartsGood

Production

ChannelMonitoringType/
ChannelMode

ProductionType
ActiveProgram/
CurrentState

ChannelMonitoringType/
FeedOverride

ChannelMonitoringType/
ChannelModifiers

MachineryItemState_StateMachineType/
CurrentState = Executing

AND

MachineryOperationModeStateMachineType/
CurrentState = Processing

Note:

The FeedOverride may also be included.

Motors OFF
(Energies OFF)		 (Not identical to legacy signal) MachineryItemState_StateMachineType/
CurrentState = OutOfService

Override >=70 to 99

Override >= 100

Override = 0

Override = 100

ChannelMonitoringType/
FeedOverride

as absolute value
Active Program Number ProductionActiveProgramType/
Name

Automatic Mode

MDA Mode

JOG Mode

 ChannelMonitoringType
ChannelMode

Start is active

Stop is active

 ProductionActiveProgramType/
State/
CurrentState
Spindle running SpindleMonitoringType/
IsRotating
Program stop in reason of a programmed stop ChannelMonitoringType/
ChannelModifiers/
OptionalStop
Program aborted in reason of a failure

(incomplete) ProductionActiveProgramType/
CurrentState = Aborted

ProductionActiveProgramType/
CurrentState = Aborted

AND
MachineryItemState_StateMachineType/
CurrentState= Processing

AND

MachineryOperationModeStateMachineType/
CurrentState = Processing

Program interrupted in reason of single step Monitoring/
ChannelModifiers/
SingleStep
Error in generalOccurrence of any Alarm with Severity >= 667 MachineryItemState_StateMachineType/
CurrentState= OutOfService
Technical breakdown

MachineryItemState_StateMachineType/
CurrentState= OutOfService

AND

MachineryOperationModeStateMachineType/
CurrentState = Processing

Organisation breakdown

MachineryItemState_StateMachineType/
CurrentState= NotExecuting

AND

MachineryOperationModeStateMachineType/
CurrentState = Processing