9 OperationType

This ObjectType contains components which are necessary to operate the LDS. It is formally defined in Table 3.

The BrowseName of ComponentType shall be built of “Component_” and a character ‘A’, ‘B’ , … (e.g. Component_A, Component_B).

The BrowseName of AdditiveType shall be built of “Additive_” and a number from 1 to n (e.g. Additive_1).

9.1 DeviceMappingNumber

The mapping shall be stable after reconnecting the devices and is therefore not possible via IP addresses, which can be assigned dynamically via DHCP. DeviceMappingNumber sets the mapping order of peripheral devices of the same type on the local network and is therefore of type UInt32.

9.2 IdentifyDevice

Signature:

	IdentifyDevice ();

The method has no Input- or OutputArguments.

9.3 HighestActiveAlarmSeverity

9.4 ActiveErrors

9.5 ResetAllErrors

Signature:

	ResetAllErrors();

The method has no Input- or OutputArguments.

9.6 ResetErrorById

Signature:

	ResetErrorById(
		[in]	0:String	Id);

9.7 SetCycleNumber

Signature:

	SetCycleNumber(
		[in]	0:UInt64	CycleNumber);

9.8 MaterialBalanceSystemType

Type of the material balance system.

9.9 ActivateMaterialBalanceSystem

If the value is true, the material balance system is activated.

9.10 DeliveryType

The dosing system works with delivery pressure or volumetric flow. As some LSR dosing systems support the selection of the DeliveryType, the Property can be writeable. Therefore, the TypeDefinition is MultiStateValueDiscreteType, so the Properties EnumValues and ValueAsText must be filled with the supported values out of Table 11.

A server can provide manufacturer specific values with EnumValues ≥ 100.

9.11 DeliveryPressure, DeliveryPressureMeasuringPoint

With the objects DeliveryPressure and DeliveryPressureMeasuringPoint the client can set (and monitor) the delivery pressure of the LDS. Both are optional, but the two elements shall always be used together.

For systems with DeliveryPressure the components ActualValue, SetValue, UpperTolerance and LowerTolerance defined in the ControlledParameterType are mandatory. If the upper or lower tolerance band is passed it is documented in the ErrorStatus.

Unit: bar or psi (=lbf/in²)

The variable DeliveryPressureMeasuringPoint represents the position of the pressure sensor used for the DeliveryPressure. As some LSR dosing systems support the selection of the position, the Property can be writeable. Therefore, the TypeDefinition is MultiStateValueDiscreteType, so the Properties EnumValues and ValueAsText must be filled with the supported values out of Table 12.

A server can provide manufacturer specific values with EnumValues ≥ 100.

NOTE: The actual pressure for each component (for monitoring) is included in the ComponentType and the cyclic events.

9.12 DeliveryFlowrate

For system with delivery volumetric flow rate the components ActualValue, SetValue, UpperTolerance and LowerTolerance are mandatory. If the upper or lower tolerance band is passed it is documented in the ErrorStatus.

Unit: l/h or gal/h

9.13 ActualShotWeight

Specifies the value determined by the feeder as the shot weight.

Unit: g or lb

9.14 SetShotWeight

Reference value determined by the IMM or defined by the user on the IMM side.

Unit: g or lb

9.15 SetValueCompositeDensity

The composite set point of density.

Unit: g/cm³ or lb/in³

9.16 MixingRatioTarget

Target of the mixing ratio (includes ratio change when MaterialBalanceSystem is active). The share of component A (in percent) defines the value:

9.17 MaxDeviationMixingRatio, TargetDeviationMixingRatio, ActualDeviationMixingRatio

If a material balance system is used these variables are used to set and monitor the deviation from the set mixing ratio of component A and B.

MaxDeviationMixingRatio is writeable by the client and used to limit the maximum deviation in percent.

TargetDeviationMixingRatio: This deviation (in percent) is set/used by the material balance system

ActualDeviationMixingRatio: Actual deviation (in percent)

The values are given related to the mixing ratio of component A. If the maximum allowed mixing ratio is 51% component A and 49% component B MaxDeviationMixingRatio is 1%.

9.18 RemainingMaterialTime

Remaining time until first material is empty.

9.19 PurgeMode

Purge functions can be activated directly when the PurgeMode is selected on the LDS. Each device is allowed to set the PurgeMode. When in remote control and purging by the IMM is activated with a hard wired dosing signal, PurgeTimeout and PurgeQuantity has no effect.

When in remote control and purging by the IMM is activated with the StartDosing Method, either PurgeTimeout/PurgeCyclicIdleTime or PurgeQuantity/PurgeCyclicQuantity must be set.

After the dosing signal is deactivated again, the PurgeMode will be reset to OFF by the LDS.

Figure 3 shows the interactions between ActivateRemoteControl, RemoteControlActivated, PurgeMode, PurgeStatus and the dosing signal.

Note: “LDS Auto” and “LDS Manual” are LDS internal parameters which are not covered by this specification.

9.20 PurgeStatus

Actual status of the purge function. PurgeStatus must show OFF if no purge function is active. The PurgeStatus is also shown in Figure 3.

9.21 PurgeQuantity

The PurgeQuantity is only used in relation with PurgeMode EnumValue 1-4 and describes the amount of material during the active purge mode.

Unit: cm³ or in³

9.22 PurgeTimeout

PurgeTimeout describes the maximum time of the active PurgeMode (1-5). For PurgeMode EnumValue 1-4, the PurgeMode is set to 0 after the PurgeTimeout has expired. For PurgeMode EnumValue 5, the PurgeCyclicActive is set to false, PurgeMode is unaffected.

9.23 PurgeCyclicQuantity

The PurgeCyclicQuantity is only used in relation with PurgeMode EnumValue 5 and describes the amount of material during a purge cycle as the sum of both components. After the volume is reached, the variable PurgeCyclicActive will become false and PurgeCyclicIdleTime starts.

Unit: cm³ or in³

9.24 PurgeCyclicIdleTime

The PurgeCyclicIdleTime is only used in relation with PurgeMode EnumValue 5 and describes the time until the next purge cycle starts.

9.25 PurgeCyclicActive

PurgeCyclicActive is only used in relation with PurgeMode EnumValue 5 and indicates the difference between purging (true) and waiting (false)

9.26 ActivateRemoteControl

It is necessary to synchronize the dosing between IMM and LSR dosing systems. This can be done via a separate interface e.g. via hardwired signals or also via OPC UA (if the process is robust against small time delays that can be caused by the client/server-connection). Signal 0 can be set by IMM or LDS, signals > 0 only by IMM.

With ActivateRemoteControl the client selects the method of remote control. If the server provides only one method for remote control, the other one is not listed in the possible values of the MultiStateValueDiscreteType.

A server can provide manufacturer specific values with EnumValues ≥ 100.

Figure 3 shows the interaction between ActivateRemoteControl and RemoteControlActivated.

9.27 RemoteControlActivated

With this signal, the LDS signals, if it is ready to be controlled via this or a separate interface. See Table 15 for possible values.

Figure 3 shows the interaction between ActivateRemoteControl and RemoteControlActivated.

9.28 StartDosing, StopDosing, DosingActive

NOTE: The dosing can also be stopped by the LDS itself (e.g. when SetShotWeight has been reached) to avoid everlasting dosing when the client does not call the method StopDosing.

Signatures:

	StartDosing();
	StopDosing();

The methods have no Input- or OutputArguments.

9.29 LDSCycleParametersEventType

The LDSCycleParametersEventType represents information on a dosing cycle. A complete dosing is defined from the beginning of the dosing signal to the next one, i.e. the event for cycle n is fired, when the dosing signal for cycle n+1 starts. After the last cycle the event must be raised after a timeout which corresponds to the cycle time.

Note: The event data refer to the current injected material and not to the current dosing process (1 cycle offset).

The LDSCycleParametersEventType is formally defined in Table 18.

9.29.1 CycleNumber

Number of the dosing cycle. Gets counted up after each dosing cycle. The value can be set by calling the method “SetCycleNumber”. It is recommended to synchronize CycleNumber after a reconnection by calling this method.

Example: 900

9.29.2 DosingTime

Duration of the dosing cycle.

9.29.3 MixingRatioTarget

Target mixing ratio of the last cycle (includes ratio change when MaterialBalanceSystem is active). The share of component A (in percent) defines the value:

9.29.4 MixingRatioActual

Actual mixing ratio of the components. The share of component A defines the value:

9.29.5 AdditivesRatioTarget

Target ratios of additives in percentage which are set in AdditiveFraction of AdditiveType.

9.29.6 AdditivesRatioActual

Actual ratios of additives in percentage.

Example: [ 2,1 % ; 1,2 % ]

9.29.7 VolumeA

Volume of component A that was added to the process in the last cycle.

Unit: cm³ or in³

9.29.8 VolumeB

Volume of component B that was added to the process in the last cycle.

Unit: cm³ or in³

9.29.9 VolumeAB

Volume of components A + B that was added to the process in the last cycle.

Unit: cm³ or in³

9.29.10 VolumeAdditives

Volumes of the additives that were added to the process in the last cycle.

Unit: cm³ or in³

9.29.11 VolumeTotal

Volume of all components (A + B + all additives).

Unit: cm³ or in³

9.29.12 ResidualAmountA

Residual weight amount of component A at the end of the dosing cycle.

Unit: kg or lb

9.29.13 ResidualAmountB

Residual weight amount of component B at the end of the dosing cycle.

Unit: kg or lb

9.29.14 MixingPointPressureA

Average pressure of component A during the last cycle at the blender.

Unit: bar or psi

9.29.15 MixingPointPressureB

Average pressure of component B during the last cycle at the blender.

Unit: bar or psi

9.29.16 MixingPointPressureBlender

Average pressure of components A and B during the last cycle at the blender.

Unit: bar or psi

9.29.17 AdditivesPressure

Average pressure of the additive during the last cycle at the measuring point.

Unit: bar or psi

9.29.18 FilterPressurePrimary, FilterPressureSecondary

Average material pressure during the last cycle before and after the filter. The Pressure difference between FilterPressurePrimary & FilterPressureSecondary can be used to check if the filter is blocked/ will be blocked soon/ has to be maintained. Unit: bar or psi