Usually, WS DataPoints in the catgeories “measured values“ or “counter” are of the type definition WSAnalogUnitType (see chapter 8.1) and are either of the DataType Float or UInt32. The ObjectType WSBaseStateMachineType (see 7.5) is used in the category OperatingStates. Some WS DataPoints in the categories “Alarms” or “Warnings” are instances of the ObjectTypes WSAlarmType (see 7.3) or WSWarningType (see 7.4). The DataType WSOperatingModeEnumerationType (see 9.1) is used for WS DataPoints in the OperatingModes category, the WSProgramEnumerationType (see 9.2) is used for WS DataPoints in the Programs category, respectively. Members of the WS Industrial User Group can define additional vendor-specific data points and machine profiles in addition to the WS DataPoints and integrate them into the WS information model.
A general mapping from WS Protocol data types to WS OPC UA TypeDefinition and DataTypes are listed in Table 13.
Table 13 – General mapping from WS Protocol data types to WS OPC UA TypeDefinition and DataTypes
|
WS Category |
WS OPC UA TypeDefinition |
WS OPC UA DataType |
WS Protocol data type |
|
Alarms |
WSAlarmType |
|
UNSIGNED32 |
|
Batch and article tracing |
WSBaseDataVariableType |
String |
STRING16 |
|
Batch and article tracing |
WSAnalogUnitType |
UInt32 |
UNSIGNED32 |
|
Batch and article tracing |
WSAnalogUnitType |
Float |
REAL |
|
Counters |
WSAnalogUnitType |
UInt32 |
UNSIGNED32 |
|
Counters |
WSBaseDataVariableType |
Number |
Arbitrary |
|
Measured values |
WSAnalogUnitType |
Float |
REAL |
|
Operating modes |
WSBaseDataVariableType |
WSOperatingStateEnumerationType |
HEX32 or UNSIGNED32 |
|
Operating states |
WSBaseStateMachineType |
|
HEX32 or UNSIGNED32 |
|
Parameters |
WSBaseDataVariableType |
LocalizedText |
UNSIGNED32 |
|
Parameters |
WSBaseDataVariableType |
UInt32 |
UNSIGNED32 |
|
Parameters |
WSAnalogUnitType |
Float |
REAL |
|
Parameters |
WSBaseDataVariableType |
String |
STRING16 |
|
Parameters |
WSAnalogUnitType |
UInt32 |
UNSIGNED32 |
|
Programs |
WSBaseDataVariableType |
WSProgramEnumerationType |
HEX32 or UNSIGNED32 |
|
Programs |
WSBaseDataVariableType |
LocalizedText |
UNSIGNED32 |
|
Warnings |
WSWarningType |
|
UNSIGNED32 |