Functionblocks – OPC UA Client Function Blocks for IEC 61131-3

7 Functionblocks

Brief description of the used letter’s "B", "E" and "V":

B	Basic	Mandatory VAR_INPUT, VAR_OUTPUT, VAR_IN_OUT.
E	Extended	Optional VAR_INPUT, VAR_OUTPUT, VAR_IN_OUT.
V	Vendor Specific	Vendor specific VAR_INPUT, VAR_OUTPUT, VAR_IN_OUT.

The detailed description can be found in Annex A.

VAR_INPUT is shown on the left side of the Function Blocks.

VAR_OUTPUT is shown on the right side of the Function Blocks.

VAR_IN_OUT is shown on the left and right side of the Function Blocks and has a dashed line below.

7.1 UA_Connect

FB-Name		UA_Connect
This Function Block is used to create a (optional secure) transport connection and an OPC UA session. The connection shall be terminated by calling the UA_Disconnect after establishing the connection.
VAR_INPUT
B	Execute	BOOL	On rising edge connection is started.
B	ServerEndpointUrl	Vendor specific	Shall be STRING or WSTRING. The recommendation for new implementation is to use WSTRING. URL
B	SessionConnectInfo	STRUCT	See UASessionConnectInfo
B	Timeout	TIME	Maximum time to establish the connection.
VAR_OUTPUT
B	Done	BOOL	Signals a connection has been initially established.
B	Busy	BOOL	The FB is not finished and new output values are to be expected.
B	Error	BOOL	Signals that an error has occurred within the FB.
B	ErrorID	DWORD	Error code.
B	ConnectionHdl	DWORD	Connection handle – is valid until UA_Disconnect is called.
Notes: The connection monitoring and the reconnect handling are to be done by the client vendor implementation. The reconnect sequence is defined in OPC 10000-4.

	UA_Connect
BOOL	Execute	Done	BOOL
Vendor specific	ServerEndpointUrl	Busy	BOOL
STRUCT	SessionConnectInfo	Error	BOOL
TIME	Timeout	ErrorID	DWORD
		ConnectionHdl	DWORD

7.2 UA_Disconnect

FB-Name			UA_Disconnect
This Function Block is used to close a transport connection of an OPC UA session.
VAR_INPUT
B	Execute	BOOL	On rising edge connection is terminated.
B	ConnectionHdl	DWORD	Connection handle of connection to be closed.
B	Timeout	TIME	Maximum time to close the connection.
VAR_OUTPUT
B	Done	BOOL	FB has completed its task.
B	Busy	BOOL	The FB is not finished and new output values are to be expected.
B	Error	BOOL	Signals that an error has occurred within the FB.
B	ErrorID	DWORD	Error code.
Notes: Calling UA_Disconnect (even in case of timeout or error) will release the ConnectionHdl, all node-handles and MonitoredItems.

	UA_Disconnect
BOOL	Execute	Done	BOOL
DWORD	ConnectionHdl	Busy	BOOL
TIME	Timeout	Error	BOOL
		ErrorID	DWORD

7.3 UA_NamespaceGetIndexList

FB-Name			UA_NamespaceGetIndexList
This Function Block is used to get the namespace-indexes of numerous namespace-URIs
VAR_INPUT
B	Execute	BOOL	FB performs its task on rising edge on this input.
B	ConnectionHdl	DWORD	Connection handle.
B	NamespaceUrisCount	UINT	Number of NamespaceUris in Array of NamespaceUris.
B	NamespaceUris	ARRAY OF Vendor specific	Shall be STRING or WSTRING. The recommendation for new implementation is to use WSTRING. Array of Vendor specific with the NamespaceUris. See Constants of Array Lengths (MAX_ELEMENTS_NAMESPACES)
B	Timeout	TIME	Maximum time to response.
VAR_OUTPUT
B	Done	BOOL	FB has completed its task.
B	Busy	BOOL	The FB is not finished and new output values are to be expected.
B	Error	BOOL	Signals that an error has occurred within the FB.
E	ErrorID	DWORD	Error code.
B	ErrorIDs	ARRAY OF DWORD	Error codes. Array shall be the same number of elements as NamespaceUrisCount. See Constants of Array Lengths (MAX_ELEMENTS_NAMESPACES)
B	NamespaceIndexes	ARRAY OF UINT	Namespace Indexes. Array shall be the same number of elements as NamespaceUris. See Constants of Array Lengths (MAX_ELEMENTS_NAMESPACES)
Notes: Reads the Server-Object NamespaceArray (NS:0; Id: 2255) and returns the indexes of the requested elements which can be used in subsequent calls where the Namespace-Array-Index is required - e.g., UA_NodeGetHandleList. This is a convenient function block – could also be done with ReadList and the returned unknown array length of the NamespaceArray could be evaluated in the user program. In case the requested NamespaceUri is not found the error PLCopenUA_Bad_NSNotFound will be returned in the corresponding ErrorIDs.

	UA_NamespaceGetIndexList
BOOL	Execute	Done	BOOL
DWORD	ConnectionHdl	Busy	BOOL
UINT	NamespaceUrisCount	Error	BOOL
ARRAY of Vendor specific	NamespaceUris	ErrorID	DWORD
TIME	Timeout	ErrorIDs	ARRAY of DWORD
		NamespaceIndexes	ARRAY of UINT

7.4 UA_ServerGetUriByIndex

FB-Name			UA_ServerGetUriByIndex
This Function Block is used to get the server-URI with a given index.
VAR_INPUT
B	Execute	BOOL	FB performs its task on rising edge on this input.
B	ConnectionHdl	DWORD	Connection handle.
B	ServerIndex	UDINT	ServerArray Index.
B	Timeout	TIME	Maximum time to response.
VAR_OUTPUT
B	Done	BOOL	FB has completed its task.
B	Busy	BOOL	The FB is not finished and new output values are to be expected.
B	Error	BOOL	Signals that an error has occurred within the FB.
B	ErrorID	DWORD	Error code.
B	ServerUri	Vendor specific	Shall be STRING or WSTRING. The recommendation for new implementation is to use WSTRING. The URI from the ServerArray with the given ServerIndex.
Notes: -

	UA_ServerGetUriByIndex
BOOL	Execute	Done	BOOL
DWORD	ConnectionHdl	Busy	BOOL
UDINT	ServerIndex	Error	BOOL
TIME	Timeout	ErrorID	DWORD
		ServerUri	Vendor specific

7.5 UA_ServerGetIndexByUriList

FB-Name			UA_ServerGetIndexByUriList
This Function Block is used to get several server-indexes of server-URIs
VAR_INPUT
B	Execute	BOOL	FB performs its task on rising edge on this input.
B	ConnectionHdl	DWORD	Connection handle.
B	ServerUrisCount	UINT	Number of ServerUris in Array of ServerUris.
B	ServerUris	ARRAY OF Vendor specific	Shall be STRING or WSTRING. The recommendation for new implementation is to use WSTRING. Array of Vendor specific with the ServerUris. See Constants of Array Lengths (MAX_ELEMENTS_NAMESPACES)
B	Timeout	TIME	Maximum time to response.
VAR_OUTPUT
B	Done	BOOL	FB has completed its task.
B	Busy	BOOL	The FB is not finished and new output values are to be expected.
B	Error	BOOL	Signals that an error has occurred within the FB.
E	ErrorID	DWORD	Error code.
B	ErrorIDs	ARRAY OF DWORD	Error codes. Array shall be the same number of elements as ServerUrisCount. See Constants of Array Lengths (MAX_ELEMENTS_NAMESPACES)
B	ServerIndexes	ARRAY OF UDINT	Server Indexes. Array shall be the same number of elements as ServerUris. See Constants of Array Lengths (MAX_ELEMENTS_NAMESPACES)
Notes: Reads the Server-Object ServerArray (NS:0; Id: 2254) and returns the indexes of the requested elements which can be used in subsequent calls where the Server-Array-Index is required - e.g. UA_Browse. This is a convenient function call – could also be done with ReadList and the returned unknown array length of the ServerArray could be evaluated in the user program. In case the requested ServerUri is not found the error PLCopenUA_Bad_NSNotFound will be returned in the corresponding ErrorIDs.

	UA_ServerGetIndexByUriList
BOOL	Execute	Done	BOOL
DWORD	ConnectionHdl	Busy	BOOL
UINT	ServerUrisCount	Error	BOOL
ARRAY of Vendor specific	ServerUris	ErrorID	DWORD
TIME	Timeout	ErrorIDs	ARRAY of DWORD
		ServerIndexes	ARRAY of UINT

7.6 UA_TranslatePathList

FB-Name			UA_TranslatePathList
This Function Block is used to get the node parameters of a node using paths of the node for multiple nodes.
VAR_INPUT
B	Execute	BOOL	FB performs its task on rising edge on this input.
B	ConnectionHdl	DWORD	Connection handle.
B	BrowsePathsCount	UINT	Number of UABrowsePath in Array of BrowsePaths.
B	BrowsePaths	ARRAY OF UABrowsePath	An Array of UABrowsePath with node parameters for starting node and relative path. See Constants of Array Lengths (MAX_ELEMENTS_RELATIVEPATH)
B	Timeout	TIME	Time to response.
VAR_OUTPUT
B	Done	BOOL	FB has completed its task.
B	Busy	BOOL	The FB is not finished and new output values are to be expected.
B	Error	BOOL	Signals that an error has occurred within the FB.
B	ErrorID	DWORD	Error code.
B	TargetNodeIDs	ARRAY OF STRUCT	See UANodeID. Structure UANodeID with node parameters. For target node mentioned by BrowsePath at the input of this FB. Length is vendor-specific (MAX_ELEMENTS_NODELIST). See Constants of Array Lengths
B	TargetErrorIDs	ARRAY OF DWORD	Array of TargetErrorIDs. Contains an error code for each element of the TargetNodeIDs array. Length is vendor-specific (MAX_ELEMENTS_NODELIST). See Constants of Array Lengths. Shall be same size like the NoOfElements in BrowsePath array length.
Notes: -

	UA_TranslatePathList
BOOL	Execute	Done	BOOL
DWORD	ConnectionHdl	Busy	BOOL
UINT	BrowsePathsCount	Error	BOOL
ARRAY OF UABrowsePath	BrowsePaths	ErrorID	DWORD
TIME	Timeout	TargetNodeIDs	ARRAY OF STRUCT
		TargetErrorIDs	ARRAY OF DWORD

7.7 UA_NodeGetHandleList

FB-Name			UA_NodeGetHandleList
This Function Block is used to get node handles for multiple nodes.
VAR_INPUT
B	Execute	BOOL	FB performs its task on rising edge on this input.
B	ConnectionHdl	DWORD	Connection handle.
B	NodeIDCount	UINT	Number of NodeIDs in Array of NodeIDs.
B	NodeIDs	ARRAY OF UANodeID	See UANodeID. Length is vendor-specific (MAX_ELEMENTS_NODELIST). See Constants of Array Lengths Array length of NodeIDs and NodeHdls must be same.
B	Timeout	TIME	Time to response.
VAR_OUTPUT
B	Done	BOOL	FB has completed its task.
B	Busy	BOOL	The FB is not finished and new output values are to be expected.
B	Error	BOOL	Signals that an error has occurred within the FB. Set to TRUE if either ErrorID or any of the NodeErrorIDs indicates an error.
B	ErrorID	DWORD	Error code.
B	NodeErrorIDs	ARRAY OF DWORD	Array of NodeErrorIDs. Contains an error code for each valid element of the NodeIds array. Length is vendor-specific (MAX_ELEMENTS_NODELIST). See Constants of Array Lengths Shall be same size like the NodesIDs array length.
B	NodeHdls	ARRAY OF DWORD	Array of Node Handles. Length is vendor-specific (MAX_ELEMENTS_NODELIST). See Constants of Array Lengths Array length of NodeIDs and NodeHdls must be same.
Notes: The NodeHdl is a reference to the internal management object for the node in the client. However, the internal client implementation shall also register the node at the server (“RegisterNode”). This enables the OPC UA Server to optimize the communication.

	UA_NodeGetHandleList
BOOL	Execute	Done	BOOL
DWORD	ConnectionHdl	Busy	BOOL
UINT	NodeIDCount	Error	BOOL
ARRAY OF STRUCT	NodeIDs	ErrorID	DWORD
TIME	Timeout	NodeErrorIDs	ARRAY OF DWORD
		NodeHdls	ARRAY OF DWORD

7.8 UA_NodeReleaseHandleList

FB-Name			UA_NodeReleaseHandleList
This Function Block is used to release a set of node handles.
VAR_INPUT
B	Execute	BOOL	FB performs its task on rising edge on this input.
B	ConnectionHdl	DWORD	Connection handle.
B	NodeHdlCount	UINT	Number of Nodes in NodeHdls Array.
B	NodeHdls	ARRAY OF DWORD	Array of Node handles to be released. Length is vendor-specific (MAX_ELEMENTS_NODELIST). See Constants of Array Lengths NULL is not a valid handle.
B	Timeout	TIME	Time to response.
VAR_OUTPUT
B	Done	BOOL	FB has completed its task.
B	Busy	BOOL	The FB is not finished and new output values are to be expected.
B	Error	BOOL	Signals that an error has occurred within the FB. Set to TRUE if either ErrorID or any of the NodeErrorIDs indicates an error.
B	ErrorID	DWORD	Error code.
B	NodeErrorIDs	ARRAY OF DWORD	Array of DWORD. Contains an error code for each valid element of the NodeHdls array. Length is vendor-specific (MAX_ELEMENTS_NODELIST). See Constants of Array Lengths Shall be same size like the NodeHdls array length.
Notes: After calling UA_NodeReleaseHandleList the NodeHdls will be invalid.

	UA_NodeReleaseHandleList
BOOL	Execute	Done	BOOL
DWORD	ConnectionHdl	Busy	BOOL
UINT	NodeHdlCount	Error	BOOL
ARRAY OF DWORD	NodeHdls	ErrorID	DWORD
TIME	Timeout	NodeErrorIDs	ARRAY OF DWORD

7.9 UA_NodeGetInformation

FB-Name		UA_NodeGetInformation
This Function Block is used to get the node information.
VAR_INPUT
B	Execute	BOOL	On rising edge node information will be read.
B	ConnectionHdl	DWORD	Connection handle.
B	NodeID	UANodeID	See UANodeID
B	Timeout	TIME	Time to response.
VAR_OUTPUT
B	Done	BOOL	FB has completed its task.
B	Busy	BOOL	The FB is not finished and new output values are to be expected.
B	Error	BOOL	Signals that an error has occurred within the FB.
E	ErrorID	DWORD	Error code.
B	NodeGetInfoErrorIDs	ARRAY [0 .. 22] OF DWORD	Array of DWORD. Contains an error code for each valid element of the NodeHdls array. Shall be same size like number of UANodeInformation elements. This struct has 20 elements. The NodeGetInfoErrorIDs have the same indices as in OPC 10000-6 specification defined, e.g. (Value = 13). The size of the array is from 0 to 22 where elements 0 and 1 are not being used.
B	NodeInfo	UANodeInformation	See UANodeInformation
Notes: Depending on the responded NodeClass (see UANodeClassMask) the corresponding NodeGetInfoErrorID shall have the following errors. Elements, which are not in this NodeClass existing shall have PLCopenUA_Bad_AttributeIdUnknown. Elements, which should exist but don’t, shall have PLCopenUA_Bad_AttributeIdInvalid. Valid elements shall have OpcUa_Good.

	UA_NodeGetInformation
BOOL	Execute	Done	BOOL
DWORD	ConnectionHdl	Busy	BOOL
STRUCT	NodeID	Error	BOOL
TIME	Timeout	ErrorID	DWORD
		NodeGetInfoErrorIDs	ARRAY OF DWORD
		NodeInfo	UANodeInformation

7.10 UA_SubscriptionCreate

FB-Name			UA_SubscriptionCreate
This Function Block can be used to create a subscription.
VAR_INPUT
B	Execute	BOOL	On rising edge subscription will be created.
B	ConnectionHdl	DWORD	Connection handle.
B	PublishingEnable	BOOL	Activate the publishing.
B	Priority	BYTE	Priority of the Subscription in the server relative to the other Subscriptions created by this client. See OPC 10000-4.
B	Timeout	TIME	Maximum time to response.
VAR_OUTPUT
B	Done	BOOL	FB has completed its task.
B	Busy	BOOL	The FB is not finished and new output values are to be expected.
B	Error	BOOL	Signals that an error has occurred within the FB.
B	ErrorID	DWORD	Error code.
B	SubscriptionHdl	DWORD	Subscription handle.
VAR_IN_OUT
B	PublishingInterval	TIME	Publishing interval (can be changed by the Server revised publishing interval).
Notes: The connection monitoring and the reconnect handling are to be done by the client vendor implementation. The reconnect sequence is defined in OPC 10000-4. SubscriptionHdl must be unique even if the client is connected to multiple servers.

	UA_SubscriptionCreate
BOOL	Execute	Done	BOOL
DWORD	ConnectionHdl	Busy	BOOL
BOOL	PublishingEnable	Error	BOOL
BYTE	Priority	ErrorID	BOOL
TIME	Timeout	SubscriptionHdl	DWORD

TIME	PublishingInterval	PublishingInterval	TIME

7.11 UA_SubscriptionDelete

FB-Name			UA_SubscriptionDelete
This Function Block can be used to delete a subscription.
VAR_INPUT
B	Execute	BOOL	On rising edge, the subscription mentioned by SubscriptionHdl will be deleted.
B	SubscriptionHdl	DWORD	Subscription handle.
B	Timeout	TIME	Time to response.
VAR_OUTPUT
B	Done	BOOL	FB has completed its task.
B	Busy	BOOL	The FB is not finished and new output values are to be expected.
B	Error	BOOL	Signals that an error has occurred within the FB.
B	ErrorID	DWORD	Error code.
Notes: -

	UA_SubscriptionDelete
BOOL	Execute	Done	BOOL
DWORD	SubscriptionHdl	Busy	BOOL
TIME	Timeout	Error	BOOL
		ErrorID	DWORD

7.12 UA_SubscriptionModify

FB-Name			UA_SubscriptionModify
This Function Block is designed to be optionally called to modify publishing parameters (enable / interval).
VAR_INPUT
B	Execute	BOOL	FB operates on rising edge.
B	SubscriptionHdl	DWORD	Subscription handle.
B	PublishingEnable	BOOL	Activates the publishing.
B	Priority	BYTE	Priority of the Subscription in the server relative to the other Subscriptions created by this client.
B	Timeout	TIME	Time to response.
VAR_OUTPUT
B	Done	BOOL	FB has completed its task.
B	Busy	BOOL	The FB is not finished and new output values are to be expected.
B	Error	BOOL	Signals that an error has occurred within the FB.
B	ErrorID	DWORD	Error code.
VAR_IN_OUT
B	PublishingInterval	TIME	Publishing interval (can be changed by the Server revised publishing interval).
Notes: -

	UA_SubscriptionModify
BOOL	Execute	Done	BOOL
DWORD	SubscriptionHdl	Busy	BOOL
BOOL	PublishingEnable	Error	BOOL
BYTE	Priority	ErrorID	DWORD
TIME	Timeout

TIME	PublishingInterval	PublishingInterval	TIME

7.13 UA_SubscriptionProcessed

FB-Name			UA_SubscriptionProcessed
This Function Block is designed to be optionally called to check if monitored items have been published. The use of the function block depends on the underlying system – see notes.
VAR_INPUT
B	Execute	BOOL	FB operates on each call.
B	SubscriptionHdl	DWORD	Subscription handle.
B	Timeout	TIME	Time to response.
VAR_OUTPUT
B	Done	BOOL	FB has completed its task.
B	Busy	BOOL	The FB is not finished and new output values are to be expected.
B	Error	BOOL	Signals that an error has occurred within the FB.
B	ErrorID	DWORD	Error code.
B	Published	BOOL	Indicates, that variables have been published since the last call.
Notes: It is expected to use this call, if the underlying system WILL publish the values automatically. Shall not be used together with the function block UA_MonitoredItemOperateList. This call is expected to return with a valid result after it is called. See also 4.2 Monitored Items.

	UA_SubscriptionProcessed
BOOL	Execute	Done	BOOL
DWORD	SubscriptionHdl	Busy	BOOL
TIME	Timeout	Error	BOOL
		ErrorID	BOOL
		Published	DWORD

7.14 UA_MonitoredItemAddList

FB-Name			UA_MonitoredItemAddList
This Function Block can be used to add handle of multiple nodes using a list of node handles.
VAR_INPUT
B	Execute	BOOL	On rising edge monitored items will be added to a subscription.
B	SubscriptionHdl	DWORD	Subscription handle.
B	NodeHdlCount	UINT	Number of valid elements in the array to add.
B	NodeHdls	ARRAY OF DWORD	Array of Node handles. Max length of array is to be defined by the vendor and shall be same length thanVariables array length. Shall be the same size as NodeHdlCount. See Constants of Array Lengths (MAX_ELEMENTS_MONITORLIST)
B	SyncMode	UAMonitoringSyncMode	See UAMonitoringSyncMode See chapter 4.2 Monitored Items for general concept of SyncModes 0 = UAMSync_Unknown Default, this results into an error code – has to be set to one of the following options 1 = UAMS_ControllerSync 2 = UAMS_FwSync
B	NodeAddInfos	ARRAY OF UANodeAdditionalInfo	See UANodeAdditionalInfo. Specifies the attribute and IndexRange. See Constants of Array Lengths (MAX_ELEMENTS_MONITORLIST) This parameter is optional. If not existing, the UAAI_Value (13) will be taken from internal implementation.
B	Timeout	TIME	Time to response.
VAR_OUTPUT
B	Done	BOOL	FB has completed its task.
B	Busy	BOOL	The FB is not finished and new output values are to be expected.
B	Error	BOOL	Signals that an error has occurred within the FB.
B	ErrorID	DWORD	Error code.
B	NodeErrorIDs	ARRAY OF DWORD	Array of DWORD. Contains an error code for each element of the Variables array. Length is vendor-specific (MAX_ELEMENTS_MONITORLIST). See Constants of Array Lengths. Shall be the same length than NodeHdlCount.
B	MonitoredItemHdls	ARRAY OF DWORD	Array of monitored item handles. Length is vendor-specific (MAX_ELEMENTS_MONITORLIST). See Constants of Array Lengths. Shall be the same length than NodeHdlCount.
VAR_IN_OUT
B	Variables	ARRAY OF UAMonitoredVariables	See UAMonitoredVariables. Length is vendor-specific (MAX_ELEMENTS_MONITORLIST). See Constants of Array Lengths. Shall be the same length as NodeHdlCount
B	MonitoringParameter	ARRAY OF UAMonitoringParameter	See UAMonitoringParameter Length is vendor-specific (MAX_ELEMENTS_MONITORLIST). See Constants of Array Lengths. Shall be the same length as NodeHdlCount.
B	ValuesChanged	ARRAY OF BOOL	Indicates that the values of the monitored item have been changed. Length is vendor-specific (MAX_ELEMENTS_MONITORLIST). Shall be the same length as NodeHdlCount. See Constants of Array Lengths
B	MinLostValueCount	ARRAY OF UINT	Count the minimum lost values if queue size is > 1 – see also UAMonitoredVariables.
Notes: VAR_IN_OUT: „Variables” as would provide best type save solution for users: The client firmware is able to map the UA memory layout to the controller layout. The firmware client can receive the type definition from the OPC UA Server. Workaround would be to provide a byte array as “Variables” and the firmware client just provide the blob (UA memory layout – so called “raw data”) into that byte array. A “Variable” could be the name of the variable so the internal firmware can get address, length, data type of variable.

	UA_MonitoredItemAddList
BOOL	Execute	Done	BOOL
DWORD	SubscriptionHdl	Busy	BOOL
UINT	NodeHdlCount	Error	BOOL
ARRAY OF DWORD	NodeHdls	ErrorID	DWORD
UAMonitoringSyncMode	SyncMode	NodeErrorIDs	ARRAY OF DWORD
ARRAY OF UANodeAdditionalInfo	NodeAddInfos	MonitoredItemHdls	ARRAY OF DWORD
TIME	Timeout

ARRAY OF UAMonitoredVariables	Variables	Variables	ARRAY OF UAMonitoredVariables
ARRAY OF UAMonitoringParameter	MonitoringParameter	MonitoringParameter	ARRAY OF UAMonitoringParameter
ARRAY OF BOOL	ValuesChanged	ValuesChanged	ARRAY OF BOOL
ARRAY OF UINT	MinLostValueCount	MinLostValueCount	ARRAY OF UINT

7.15 UA_MonitoredItemRemoveList

FB-Name			UA_MonitoredItemRemoveList
This Function Block can be used to remove multiple nodes from a subscription using a list of node handles.
VAR_INPUT
B	Execute	BOOL	On rising edge monitored items will be removed from the subscription.
B	SubscriptionHdl	DWORD	Subscription handle.
B	MonitoredItemHdlCount	UINT	Number of valid elements in the array to remove.
B	MonitoredItemHdls	ARRAY OF DWORD	Monitored item handles. Length is vendor-specific (MAX_ELEMENTS_MONITORLIST). See Constants of Array Lengths. Shall be the same size than MonitoredItemHdlCount
B	Timeout	TIME	Time to response.
VAR_OUTPUT
B	Done	BOOL	FB has completed its task.
B	Busy	BOOL	The FB is not finished and new output values are to be expected.
B	Error	BOOL	Signals that an error has occurred within the FB.
B	ErrorID	DWORD	Error code.
B	NodeErrorIDs	ARRAY OF DWORD	Array of DWORD. Contains an error code for each valid element of the Variables array. Length is vendor-specific (MAX_ELEMENTS_MONITORLIST). See Constants of Array Lengths Shall be the same size than MonitoredItemHdlCount.
Notes: -

	UA_MonitoredItemRemoveList
BOOL	Execute	Done	BOOL
DWORD	SubscriptionHdl	Busy	BOOL
UINT	MonitoredItemHdlCount	Error	BOOL
ARRAY OF DWORD	MonitoredItemHdls	ErrorID	DWORD
TIME	Timeout	NodeErrorIDs	ARRAY OF DWORD

7.16 UA_MonitoredItemModifyList

FB-Name			UA_MonitoredItemModifyList
This Function Block is designed to be optionally called to modify a list of monitored item parameters.
VAR_INPUT
B	Execute	BOOL	On rising edge monitored items will be modified.
B	SubscriptionHdl	DWORD	Subscription handle.
B	MonitoredItemHdlCount	UINT	Number of valid elements in the array to modify.
B	MonitoredItemHdls	ARRAY OF DWORD	Array of monitored item handles. Length is vendor-specific (MAX_ELEMENTS_MONITORLIST). See Constants of Array Lengths. Shall be the same size than MonitoredItemHdlCount
B	Timeout	TIME	Time to response.
VAR_OUTPUT
B	Done	BOOL	FB has completed its task.
B	Busy	BOOL	The FB is not finished and new output values are to be expected.
B	Error	BOOL	Signals that an error has occurred within the FB.
B	ErrorID	DWORD	Error code.
B	NodeErrorIds	ARRAY OF DWORD	Length is vendor-specific (MAX_ELEMENTS_MONITORLIST). See Constants of Array Lengths – including the “Overflow bit” indication
VAR_IN_OUT
B	MonitoringParameters	ARRAY OF UAMonitoringParameter	See UAMonitoringParameter
Notes: -

	UA_MonitoredItemModifyList
BOOL	Execute	Done	BOOL
DWORD	SubscriptionHdl	Busy	BOOL
UINT	MonitoredItemHdlCount	Error	BOOL
ARRAY OF DWORD	MonitoredItemHdls	ErrorID	DWORD
TIME	Timeout	NodeErrorIds	ARRAY OF DWORD

ARRAY OF UAMonitoringParameter	MonitoringParameters	MonitoringParameters	ARRAY OF UAMonitoringParameter

7.17 UA_MonitoredItemOperateList

FB-Name			UA_MonitoredItemOperateList
This Function Block is designed to be called to update the values of a list of Variables and the corresponding information in the associated lists like ValuesChanged, TimeStamps and NodeQualityIDs of the control program. The use of the function block depends on the underlying system – see notes.
VAR_INPUT
B	Execute	BOOL	On rising edge monitored items will be modified.
B	SubscriptionHdl	DWORD	Subscription handle.
B	MonitoredItemHdlCount	UINT	Number of valid elements in the array to modify.
B	MonitoredItemHdls	ARRAY OF DWORD	Array of monitored item handles. Length is vendor-specific (MAX_ELEMENTS_MONITORLIST). See Constants of Array Lengths. Shall be the same size than MonitoredItemHdlCount.
VAR_OUTPUT
B	Done	BOOL	FB has completed its task.
B	Busy	BOOL	The FB is not finished and new output values are to be expected.
B	Error	BOOL	Signals that an error has occurred within the FB.
B	ErrorID	DWORD	Error code.
B	NodeErrorIDs	ARRAY OF DWORD	Array of DWORD. Contains an error code for each element of the MonitoredItemHdls-Array. Length is vendor-specific (MAX_ELEMENTS_MONITORLIST). See Constants of Array Lengths Shall be the same length than MonitoredItemHdlCount.
B	Published	BOOL	Indicates, that variables have been published since the last call. At least one element of the array of ValuesChanged will be TRUE.
Notes: It is expected to use this call, if the underlying system will NOT update the values automatically. Shall not be used together with the function block UA_SubscriptionProcessed. After the successful execution it is expected, that the values of the Variables and the corresponding information in the associated lists like ValuesChanged, TimeStamps and NodeQualityIDs have been updated. See also 4.2 Monitored Items.

	UA_MonitoredItemOperateList
BOOL	Execute	Done	BOOL
DWORD	SubscriptionHdl	Busy	BOOL
UNIT	MonitoredItemHdlCount	Error	BOOL
ARRAY OF DWORD	MonitoredItemHdls	ErrorID	DWORD
		NodeErrorIDs	ARRAY OF DWORD
		Published	BOOL

7.18 UA_ReadList

FB-Name			UA_ReadList
This Function Block is used to read values of multiple nodes using a list of node handles.
VAR_INPUT
B	Execute	BOOL	On rising edge node information will be read.
B	ConnectionHdl	DWORD	Connection handle.
B	NodeHdlCount	UINT	Number of valid elements in the array to read.
B	NodeHdls	ARRAY OF DWORD	Array of Node Handles. Length is vendor-specific (MAX_ELEMENTS_NODELIST). See Constants of Array Lengths Shall be same size like the Variables array length.
B	NodeAddInfos	ARRAY OF UANodeAdditionalInfo	See UANodeAdditionalInfo. Array of UANodeAdditionalInfo. Specifies the attribute and IndexRange. Length is vendor-specific (MAX_ELEMENTS_NODELIST). See Constants of Array Lengths Shall be same size like the Variables array length. This parameter is optional. If not existing the UAAI_Value (13) will be taken from internal implementation.
B	Timeout	TIME	Time to response.
VAR_OUTPUT
B	Done	BOOL	FB has completed its task.
B	Busy	BOOL	The FB is not finished and new output values are to be expected
B	Error	BOOL	Signals that an error has occurred within the FB. Set to TRUE if either ErrorID or any of the NodeErrorIDs indicates an error.
B	ErrorID	DWORD	Error code for the OPC UA service call.
B	NodeErrorIDs	ARRAY OF DWORD	Array of DWORD. Contains an error code for each valid element of the Variables array. Length is vendor-specific (MAX_ELEMENTS_NODELIST). See Constants of Array Lengths Shall be same size like the Variables array length.
B	TimeStamps	ARRAY OF Vendor specific	Shall be DT or LDT. The recommendation for new implementation is to use LDT. Contains a TimeStamp for each valid element of the Variables array. Length is vendor-specific (MAX_ELEMENTS_NODELIST). Constants of Array Lengths Constants of Array Lengths Shall be same size like the Variables array length. This parameter is optional. If not existing the internal client implementation shall not ask for any timestamp from server side.
VAR_IN_OUT
B	Variables	ARRAY OF Vendor specific	Vendor specific. Length is vendor-specific (MAX_ELEMENTS_NODELIST). See Constants of Array Lengths
Notes: Vendors can handle “Variables” in a vendor specific way. Independent of the vendor specific solution the mapping of the controller data type and OPC UA data type shall be handled in the function block. VAR_IN_OUT: “Variables” as would provide best type save solution for users: The client firmware is able to map the UA memory layout to the controller layout. The firmware client can receive the type definition from the OPC UA Server. Workaround would be to provide a byte array as “Variables” and the firmware client just provide the blob (UA memory layout – so called “raw data”) into that byte array. A “Variable” could be the name of the variable so the internal firmware can get address, length, data type of variable.

	UA_ReadList
BOOL	Execute	Done	BOOL
DWORD	ConnectionHdl	Busy	BOOL
UINT	NodeHdlCount	Error	BOOL
ARRAY OF DWORD	NodeHdls	ErrorID	DWORD
ARRAY OF STRUCT	NodeAddInfos	NodeErrorIDs	ARRAY OF DWORD
TIME	Timeout	TimeStamps	ARRAY OF Vendor specific

ARRAY OF Vendor specific	Variables	Variables	ARRAY OF Vendor specific

7.19 UA_WriteList

FB-Name			UA_WriteList
This Function Block is used to write values to multiple nodes using a list of node handles.
VAR_INPUT
B	Execute	BOOL	On rising edge node values will be written.
B	ConnectionHdl	DWORD	Connection handle.
B	NodeHdlCount	UINT	Number of valid elements in the array to write.
B	NodeHdls	ARRAY OF DWORD	Array of Node Handles. Length is vendor-specific (MAX_ELEMENTS_NODELIST). See Constants of Array Lengths Shall be same size like the Variables array length.
B	NodeAddInfos	ARRAY OF UANodeAdditionalInfo	See UANodeAdditionalInfo. Array of UANodeAdditionalInfo. Specifies the attribute and IndexRange. Length is vendor-specific (MAX_ELEMENTS_NODELIST). See Constants of Array Lengths Shall be same size like the Variables array length. This parameter is optional. If not existing, the UAAI_Value (13) will be taken from internal implementation.
B	Timeout	TIME	Time to response.
VAR_OUTPUT
B	Done	BOOL	FB has completed its task.
B	Busy	BOOL	The FB is not finished and new output values are to be expected.
B	Error	BOOL	Signals that an error has occurred within the FB. Set to TRUE if either ErrorID or any of the NodeErrorIDs indicates an error.
B	ErrorID	DWORD	Error code for the OPC UA service call.
B	NodeErrorIDs	ARRAY OF DWORD	Array of DWORD. Contains an error code for each valid element of the Variables array. Length is vendor-specific (MAX_ELEMENTS_NODELIST). See Constants of Array Lengths Shall be same size like the Variables array length.
VAR_IN_OUT
B	Variables	ARRAY OF Vendor specific	Vendor specific. Length is vendor-specific (MAX_ELEMENTS_NODELIST). See Constants of Array Lengths.
Notes: Vendors can handle “Variables” in a vendor specific way. Independent of the vendor specific solution the mapping of the controller data type and OPC UA data type shall be handled in the function block. VAR_IN_OUT: “Variables” as would provide best type save solution for users: The client firmware is able to map the UA memory layout to the controller layout. The firmware client can receive the type definition from the OPC UA Server. Workaround would be to provide a byte array as “Variables” and the firmware client just provide the blob (UA memory layout – so called “raw data”) into that byte array. A “Variable” could be the name of the variable so the internal firmware can get address, length, data type of variable.

	UA_WriteList
BOOL	Execute	Done	BOOL
DWORD	ConnectionHdl	Busy	BOOL
UINT	NodeHdlCount	Error	BOOL
ARRAY OF DWORD	NodeHdls	ErrorID	DWORD
ARRAY OF STRUCT	NodeAddInfos	NodeErrorIDs	ARRAY OF DWORD
TIME	Timeout

ARRAY OF Vendor specific	Variables	Variables	ARRAY OF Vendor specific

7.20 UA_MethodGetHandleList

FB-Name			UA_MethodGetHandleList
This Function Block is used to get multible method handles for method calls.
VAR_INPUT
B	Execute	BOOL	FB performs its task on rising edge on this input.
B	ConnectionHdl	DWORD	Connection handle.
B	NodeIDCount	UINT	Number of elements the ObjectNodeIDs and MethodNodeIDs shall have.
B	ObjectNodeIDs	ARRAY OF UANodeID	See UANodeID. Array shall have the size of NodeIDCount See Constants of Array Lengths
B	MethodNodeIDs	ARRAY OF UANodeID	See UANodeID. Array shall have the size of NodeIDCount See Constants of Array Lengths
B	Timeout	TIME	Time to response.
VAR_OUTPUT
B	Done	BOOL	FB has completed its task.
B	Busy	BOOL	The FB is not finished and new output values are to be expected.
B	Error	BOOL	Signals that an error has occurred within the FB.
E	ErrorID	DWORD	Error code.
B	ErrorIDs	ARRAY OF DWORD	Error codes.
B	MethodHdls	ARRAY OF DWORD	Method handles.
Notes: -

	UA_MethodGetHandleList
BOOL	Execute	Done	BOOL
DWORD	ConnectionHdl	Busy	BOOL
UINT	NodeIDCount	Error	BOOL
ARRAY OF UANodeID	ObjectNodeIDs	ErrorID	DWORD
ARRAY OF UANodeID	MethodNodeIDs	ErrorIDs	ARRAY OF DWORD
TIME	Timeout	MethodHdls	ARRAY OF DWORD

7.21 UA_MethodReleaseHandleList

FB-Name			UA_MethodReleaseHandleList
This Function Block is used to release method handles.
VAR_INPUT
B	Execute	BOOL	FB performs its task on rising edge on this input.
B	ConnectionHdl	DWORD	Connection handle.
B	MethodHdlCount	UINT	Number of elements the MethodHdls shall have.
B	MethodHdls	ARRAY OF DWORD	Method handles to be released. See Constants of Array Lengths (MAX_ELEMENTS_METHOD)
B	Timeout	TIME	Time to response.
VAR_OUTPUT
B	Done	BOOL	FB has completed its task.
B	Busy	BOOL	The FB is not finished and new output values are to be expected.
B	Error	BOOL	Signals that an error has occurred within the FB.
E	ErrorID	DWORD	Error code.
B	ErrorIDs	ARRAY OF DWORD	Error codes. See Constants of Array Lengths (MAX_ELEMENTS_METHOD)
Notes: After calling UA_MethodReleaseHandle or MethodReleaseHandleList the MethodHdl(s) will be invalid.

	UA_MethodReleaseHandleList
BOOL	Execute	Done	BOOL
DWORD	ConnectionHdl	Busy	BOOL
UINT	MethodHdlCount	Error	BOOL
ARRAY OF DWORD	MethodHdls	ErrorID	DWORD
TIME	Timeout	ErrorIDs	ARRAY OF DWORD

7.22 UA_MethodCall

FB-Name		UA_MethodCall
This Function Block is used to call a method routine.
VAR_INPUT
B	Execute	BOOL	FB performs its task on rising edge on this input.
B	ConnectionHdl	DWORD	Connection handle.
B	MethodHdl	DWORD	Method handle.
B	Timeout	TIME	Time to response.
VAR_OUTPUT
B	Done	BOOL	FB has completed its task.
B	Busy	BOOL	The FB is not finished and new output values are to be expected.
B	Error	BOOL	Signals that an error has occurred within the FB.
B	ErrorID	DWORD	Error code.
VAR_IN_OUT
E	MethodResult	DWORD	StatusCode of the Method executed in the Server. If a vendor do not provide this extended output then the operation result should be returned in the ErrorID.
B	InputArguments	Vendor specific	Variable containing input parameters. Vendor specific.
B	OutputArguments	Vendor specific	Variable containing output parameters. Vendor specific.
Notes: -

	UA_MethodCall
BOOL	Execute	Done	BOOL
DWORD	ConnectionHdl	Busy	BOOL
DWORD	MethodHdl	Error	BOOL
TIME	Timeout	ErrorID	DWORD

DWORD	MethodResult	MethodResult	DWORD
Vendor specific	InputArguments	InputArguments	Vendor specific
Vendor specific	OutputArguments	OutputArguments	Vendor specific

7.23 UA_Browse

FB-Name			UA_Browse
This Function Block is used to navigate through the Address Space. Passing a starting node, the server retuns a list of nodes by references. The MaxArray size is configured for the controller must be passed as the RequestMaxReferencePerNode in the firmeware service call.
VAR_INPUT
B	Execute	BOOL	FB performs its task on rising edge on this input.
B	ConnectionHdl	DWORD	Connection handle.
E	ViewDescription	UAViewDescription	Optional: Shall be an empty parameter if NOT browsing a View.
B	BrowseDescription	UABrowseDescription	Starting Node and other information for navigation. See UABrowseDescription Hint: This parameter is ignored if the ContinuationPointIn is not 0
B	ContinuationPointIn	DWORD	If set to 0 the browse starts with starting node. If set to ContinuationPointOut it can be used for browse next service.
B	Timeout	TIME	Time to response.
VAR_OUTPUT
B	Done	BOOL	FB has completed its task.
B	Busy	BOOL	The FB is not finished and new output values are to be expected.
B	Error	BOOL	Signals that an error has occurred within the FB.
B	ErrorID	DWORD	Error code.
B	BrowseResultCount	UINT	The number of entries in the BrowseResult array
B	BrowseResult	ARRAY OF UAReferenceDescription	List of references and target node information for the node passing the filter criteria in the request See UAReferenceDescription Length is vendor-specific (MAX_ELEMENTS_BROWSERESULT). See Constants of Array Lengths Hint: MaxSize is initialized by a predefined fixed size
B	ContinuationPointOut	DWORD	Set when the server was not able to to deliver all results. Can be used to copy it to ContinuationPointIn for browse next service
Notes: -

	UA_Browse
BOOL	Execute	Done	BOOL
DWORD	ConnectionHdl	Busy	BOOL
UAViewDescription	ViewDescription	Error	BOOL
UABrowseDescription	BrowseDescription	ErrorID	DWORD
DWORD	ContinuationPointIn	BrowseResultCount	UINT
TIME	Timeout	BrowseResult	ARRAY OF UAReferenceDescription
		ContinuationPointOut	DWORD

7.24 UA_EventItemAdd

FB-Name			UA_EventItemAdd
This Function Block is used to add handles for events.
VAR_INPUT
B	Execute	BOOL	FB performs its task on rising edge on this input.
B	SubscriptionHdl	DWORD	Subscription handle.
B	NodeHdl	DWORD	Handle of the node to monitor for emitted events. Events are only produced by the node classes Object and View. Whether a node is actually producing events or not may be determined by its EventNotifier attribute.
B	EventType	UANodeID	Type of the event to monitor. The EventType will be included as OfType operator in the Where Clause of the event monitored item filter.
B	EventFieldSelectionCount	UINT	Number of elements in EventFieldSelections
B	EventFieldSelections	ARRAY OF UARelativePath	Array of UARelativePath for the event fields to select. The path starts from the event type node. The FieldSelection is used as Select Clause of the event monitored item filter. Examples are 0: Message selects the Message event field 0: ActiveState/0: Id selects the Boolean representation of the Alarm ActiveState. Length is vendor-specific (MAX_EVENT_FIELD_SELECTIONS). See Constants of Array Lengths Hint: MaxSize is initialized by a predefined fixed size
B	Timeout	TIME	Time to response.
VAR_OUTPUT
B	Done	BOOL	FB has completed its task.
B	Busy	BOOL	The FB is not finished and new output values are to be expected.
B	Error	BOOL	Signals that an error has occurred within the FB.
B	ErrorID	DWORD	Error code
B	EventItemHdl	DWORD	Event Item Handle. The handle can be used to process the published events with UA_EventItemOperate and remove them from the subscription with UA_EventItemRemove.
VAR_IN_OUT
B	EventFields	ARRAY OF Vendor specific	Vendor specific list of variables used to receive the events field data for one event occurrence. Vendor specific.
B	EventProcessed	BOOL	Indicates that the values of the event item have been changed.
B	RemainingEventCount	UINT	Number of remaining events available for processing
B	FieldErrorIDs	ARRAY OF DWORD	Contains an error code for each valid element of the EventFieldSelection array. Length is vendor-specific (MAX_EVENT_FIELD_SELECTIONS). See Constants of Array Lengths – including the “Overflow bit” indication.
Notes: -

	UA_EventItemAdd
BOOL	Execute	Done	BOOL
DWORD	SubscriptionHdl	Busy	BOOL
ARRAY OF DWORD	NodeHdl	Error	BOOL
ARRAY OF UANodeId	EventType	ErrorID	DWORD
UINT	EventFieldSelectionCount	EventItemHdl	DWORD
ARRAY OF UARelativePath	EventFieldSelection
TIME	Timeout

ARRAY OF Vendor specific	EventFields	EventFields	ARRAY OF Vendor specific
BOOL	EventProcessed	EventProcessed	BOOL
UINT	RemainingEventCount	RemainingEventCount	UINT
ARRAY OF DWORD	FieldErrorIDs	FieldErrorIDs	ARRAY OF DWORD

7.25 UA_EventItemOperateList

FB-Name			UA_EventItemOperateList
This Function Block is used to get a list of event infomation.
VAR_INPUT
B	Execute	BOOL	FB performs its task on rising edge on this input.
B	SubscriptionHdl	DWORD	Subscription handle.
B	EventItemHdlCount	UINT	Number of elements the EventItemHdls shall have.
B	EventItemHdls	ARRAY OF DWORD	Event Item Handles Length is vendor-specific (MAX_ELEMENTS_EVENTITEMLIST). See Constants of Array Lengths
B	Timeout	TIME	Time to response.
VAR_OUTPUT
B	Done	BOOL	FB has completed its task.
B	Busy	BOOL	The FB is not finished and new output values are to be expected.
B	Error	BOOL	Signals that an error has occurred within the FB.
B	ErrorID	DWORD	Error code.
B	EventProcessed	BOOL	Indicates if a new event was processed.
B	FieldErrorIDs	ARRAY OF DWORD	Contains an error code for each valid element of the EventFieldSelection array. Length is vendor-specific (MAX_ELEMENTS_EVENTITEMOPERATE). See Constants of Array Lengths – including the “Overflow bit” indication. Note: For compatibility reason “FieldErrorIDs” is not renamed, but “EventErrorIDs” is ment therefore instead.
Notes: The EventFields has to be defined what is the best declaration in IEC language for 25 different event type structures.

	UA_EventItemOperateList
BOOL	Execute	Done	BOOL
DWORD	SubscriptionHdl	Busy	BOOL
UINT	EventItemHdlCount	Error	BOOL
ARRAY OF DWORD	EventItemHdls	ErrorID	DWORD
TIME	Timeout	EventProcessed	BOOL
		FieldErrorIDs	ARRAY OF DWORD

7.26 UA_EventItemRemoveList

FB-Name		UA_EventItemRemoveList
This Function Block can be used to remove an event item handle from a subscription.
VAR_INPUT
B	Execute	BOOL	On rising edge node information will be read.
B	SubscriptionHdl	DWORD	Subscription handle.
B	EventItemHdlCount	UINT	Number of elements the EventItemHdls shall have.
B	EventItemHdls	ARRAY OF DWORD	Event item handles. Length is vendor-specific (MAX_ELEMENTS_EVENTITEMLIST). See Constants of Array Lengths
B	Timeout	TIME	Time to response.
VAR_OUTPUT
B	Done	BOOL	FB has completed its task.
B	Busy	BOOL	The FB is not finished and new output values are to be expected.
B	Error	BOOL	Signals that an error has occurred within the FB.
E	ErrorID	DWORD	Error code.
B	ErrorIDs	ARRAY OF DWORD	Error codes
Notes: -

	UA_EventItemRemoveList
BOOL	Execute	Done	BOOL
DWORD	SubscriptionHdl	Busy	BOOL
UINT	EventItemHdlCount	Error	BOOL
ARRAY OF DWORD	EventItemHdls	ErrorID	DWORD
TIME	Timeout	ErrorIDs	ARRAY OF DWORD

7.27 UA_HistoryUpdate

FB-Name			UA_HistoryUpdate
This Function Block is used to insert or replace or update data in the historical database.
VAR_INPUT
B	Execute	BOOL	FB performs its task on rising edge on this input.
B	ConnectionHdl	DWORD	Connection handle.
B	NodeHdl	DWORD	Node handle.
B	PerformInsert	BOOL
B	PerformReplace	BOOL
B	DataValueCount	UNIT	Number of values to be inserted, replaced or updates
B	DataValues	ARRAY of UAHADataValue	Array of UAHADataValue See UAHADataValue
B	Timeout	TIME	Time to response.
VAR_OUTPUT
B	Done	BOOL	FB has completed its task.
B	Busy	BOOL	The FB is not finished and new output values are to be expected
B	Error	BOOL	Signals that an error has occurred within the Function Block.
B	ErrorID	DWORD	Error code. (StatusCode)
B	ValueErrorIDs	ARRAY OF DWORD	Contains an error code for each valid element.
Notes: The idea of this scenario is to have an OPC UA server with HA (Historical Access) functionality available, either local on the same system or remotely in the network. In traditional way the OPC UA Server is responsible to collect data on his own from the underlying process. This FB UA_HistoryUpdate allows the OPC UA-HA Server to stay inactive and wait that an OPC UA client is actively pushing data into OPC UA-HA-Server making use of the Server’s HistoryUpdate interface.

	UA_HistoryUpdate
BOOL	Execute	Done	BOOL
DWORD	ConnectionHdl	Busy	BOOL
DWORD	NodeHdl	Error	BOOL
BOOL	PerformInsert	ErrorID	DWORD
BOOL	PerformReplace	ValueErrorIDs	ARRAY OF DWORD
UINT	DataValueCount
ARRAY OF UAHADataValue	DataValues
TIME	Timeout