HowTo:Implementing Live Values - Revision history

NWE: /* See also */

2025-03-06T10:31:33Z

‎See also

LDO at 10:24, 4 July 2024

2024-07-04T10:24:54Z

MKR at 08:13, 22 January 2020

2020-01-22T08:13:29Z

MKR at 08:45, 21 January 2020

2020-01-21T08:45:56Z

MKR at 08:45, 21 January 2020

2020-01-21T08:45:22Z

MKR: MKR moved page HowTo:Live Values to HowTo:Implementing Live Values: Title confusing

2020-01-21T08:38:44Z

MKR moved page Live Values to Implementing Live Values: Title confusing

MKR: /* How Live Values work */

2020-01-21T08:33:11Z

‎How Live Values work

NWE at 16:26, 13 December 2019

2019-12-13T16:26:20Z

CRO at 10:42, 5 December 2019

2019-12-05T10:42:09Z

CRO: /* Implementing Live Values in {{UBIK}} Studio */

2019-12-05T10:27:21Z

‎Implementing Live Values in {{UBIK}} Studio

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 </source>
 == See also ==
 * [[Plugins]]
 * [[HowTo:Add a MetaProperty to a MetaClass]]
 [[Category:How-To|Live Values]]

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 # Save the changes with {{key press|Ctrl|S}} or the save command.
 == See also ==
 * [[Plugins]]

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 == How Live Values Work ==
 Live values are special properties without a value that is persisted in the database. Instead, they get their current value frequently from a live value server, including a measurement quality indicator and a read timestamp, among other details. Live values can be used to display trends and current values (e.g., sensor values) from dynamic sources like process control systems (e.g., via OPC-UA).
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 With the UBIK.Interface.Module.OPCUA plugin, {{UBIK}} will detect that there is a live value server and it will host a live value data service, supplying our "cooling unit" objects with their current "temperature" values.
 == Implementing Live Values in {{UBIK}} Studio ==
 # Navigate to the [[MetaClass]] ''OPC_SERVER'' via the ''[[Class Browser]]''.<br/> [[File:OPCServer.PNG|330 px|border]]
 # Add a new instance (OPC Server) to the [[MetaClass]] by using the [[Bulk Editor]].
@@ Line 28: / Line 24: @@
 # Add the created Datapoint from step 4 to an instance of the above ''Metaclass'' to which it concerns. <br/> [[File:AddDatapoint.PNG|770 px|border]]
 # Save the changes with {{key press|Ctrl|S}} or the save command.
 == See also ==

@@ Line 25: / Line 25: @@
 # Navigate to the [[MetaClass]] ''LIVEVALUE_METAPROPERTY'' via the ''[[Class Browser]]''.<br/> [[File:LMP.PNG|330 px|border]]
 # Add a new instance (Live Value MetaProperty) to the [[MetaClass]] by using the [[Bulk Editor]].
-# Add the newly created ''Live Value MetaProperty'', from step 6, to the ''Metaclass'' where you want to have the live Values to bee shown.
+# Add the newly created ''Live Value MetaProperty'', from step 6, to the ''Metaclass'' where you want to have the live Values to be shown.
 # Add the created Datapoint from step 4 to an instance of the above ''Metaclass'' to which it concerns. <br/> [[File:AddDatapoint.PNG|770 px|border]]
 # Save the changes with {{key press|Ctrl|S}} or the save command.

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 == How Live Values Work ==
@@ Line 11: / Line 13: @@
 With the UBIK.Interface.Module.OPCUA plugin, {{UBIK}} will detect that there is a live value server and it will host a live value data service, supplying our "cooling unit" objects with their current "temperature" values.
-[[Category:How-To|Live Values]]
 == Implementing Live Values in {{UBIK}} Studio ==

← Older revision	Revision as of 08:38, 21 January 2020
(No difference)

@@ Line 1: / Line 1: @@
-== How Live Values work ==
+== How Live Values Work ==
-Live values are special properties without a value that is persisted in the database. Instead, they get their current value frequently from a live value server, including a measurement quality indicator and a read time stamp, among other details. Live values can be used to display trends and current values (e.g., sensor values) from dynamic sources like process control systems (e.g., via OPC-UA).
+Live values are special properties without a value that is persisted in the database. Instead, they get their current value frequently from a live value server, including a measurement quality indicator and a read timestamp, among other details. Live values can be used to display trends and current values (e.g., sensor values) from dynamic sources like process control systems (e.g., via OPC-UA).
-In {{UBIK}}, live value properties are defined by a special kind of [[MetaProperty]], a live value meta property. So, if you want to add a live value to a {{UBIK}} object, you first need to add such a meta property to the meta class of the object in question. You can get such a live value meta property from creating an instance of the [[MetaClass]] ''LIVEVALUE_METAPROPERTY''. This way, for example, you could define a property "temperature" on a meta class "cooling unit".
+In {{UBIK}}, live value properties are defined by a special kind of [[MetaProperty]], a live value meta property. So, if you want to add a live value to a {{UBIK}} object, you first need to add such a meta property to the metaclass of the object in question. You can get such a live value meta property from creating an instance of the [[MetaClass]] ''LIVEVALUE_METAPROPERTY''. This way, for example, you could define a property "temperature" on a metaclass "cooling unit".
 So, following this example, how do individual "cooling unit" instances know their specific "temperature" values? An individual live value property holds the answer: It actually ''has'' a persisted value - a reference to a so-called live value data point. Such a data point knows a live value server (providing access to a process control system for example), and an identifier of (or path to) a dynamic variable, e.g. representing a specific temperature sensor in the process control system. This means, for a specific "cooling unit" instance, we want to configure the correct live value data point as a value of the "temperature" live value property.
-Hence, we require a live value data point and a live value server. There is a {{UBIK}} plugin UBIK.Interface.Module.OPCUA which we can use for getting those. That module implements a specific kind of live value server, namely the OPC-UA live value server. It is represented by a meta class ''OPC_SERVER'', and instances thereof can be used to configure a connection to a specific OPC server. Similarly, there is a meta class ''OPC_DATAPOINT'' representing variable configurations. We want to have a data point instance with a link to a server instance (and a path to the variable we need). This data point instance must be set on the "temperature" property in our example.
+Hence, we require a live value data point and a live value server. There is a {{UBIK}} plugin UBIK.Interface.Module.OPCUA which we can use for getting those. That module implements a specific kind of live value server, namely the OPC-UA live value server. It is represented by a metaclass ''OPC_SERVER'', and instances thereof can be used to configure a connection to a specific OPC server. Similarly, there is a metaclass ''OPC_DATAPOINT'' representing variable configurations. We want to have a data point instance with a link to a server instance (and a path to the variable we need). This data point instance must be set on the "temperature" property in our example.
 With the UBIK.Interface.Module.OPCUA plugin, {{UBIK}} will detect that there is a live value server and it will host a live value data service, supplying our "cooling unit" objects with their current "temperature" values.
 == Implementing Live Values in {{UBIK}} Studio ==

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 #Add the newly created ''Live Value MetaProperty'', from step 6, to the ''Metaclass'' where you want to have the live Values to bee shown.
 #Add the created Datapoint from step 4 to an instance of the above ''Metaclass'' to which it concerns. <br/> [[File:AddDatapoint.PNG|770 px|border]]
 # Save the changes with {{key press|Ctrl|S}} or the save command.

@@ Line 3: / Line 3: @@
 First of all, download the UBIK.Interface.Module.OPCUA from the ''Augmensys Realease Portal/Plugins'' and copy them into the injections folder from your {{UBIK}} Studio as well as in the injection folder of the Web Service.<br>
 <br>
-# Implementing the Server under ''System/System.Interface/System.Interface.OPCIUA/OPC_SERVER OPC''.
+# Navigate to the [[MetaClass]] ''OPC_SERVER OPC'' via the ''[[Class Browser]]''.<br/> [[File:OPCServer.PNG|330 px|border]]
-#Implementing a Datapoint under ''System/System.Interface/System.Interface.OPCIUA/OPC_DATAPOINT OPC''. As ''REF_OPC_SERVER'' take the server created before in step 1.
+# Add a new instance (OPC Server) to the [[MetaClass]] by using the [[Bulk Editor]].
-#Create a LiveValue MetaProperty under ''System/System.Interface/System.Interface.LiveValue/LiveValue_METAPROPERTY'' and add it to the Metaclass where you want to have the live Values to bee shown.
+# Navigate to the [[MetaClass]] ''OPC_DATAPOINT OPC'' via the ''[[Class Browser]]''.<br/> [[File:OPCDATAPOINT.PNG|330 px|border]]
-# Add the created Datapoint from Step 2 and add it to an equipment to which it concerns.
+# Add a new instance (OPC Datapoint) to the [[MetaClass]] by using the [[Bulk Editor]]. As ''REF_OPC_SERVER'' take the server created before in step 2.<br/> [[File:OPCDatapointInstance.PNG|770 px|border]]
-<br>
+# Navigate to the [[MetaClass]] ''LIVEVALUE_METAPROPERTY'' via the ''[[Class Browser]]''.<br/> [[File:LMP.PNG|330 px|border]]
 [[Category:How-To|Live Values]]