Udt753 Uanodeid; Fb233 Ua_Nodereleasehandlelist; Function And Call Interface - Ua_Nodereleasehandlelist - Siemens SIMATIC S7-400 Operating Instructions Manual

Programming the OPC UA client blocks

5.6 FB233 UA_NodeReleaseHandleList

5.5.3

UDT753 UANodeID

UANodeID
The following table shows the meaning of the parameters of UANodeID to identify the target
node on the OPC UA server. UANodeID supplies the parameter "NodeIDs" of the
UA_NodeGetHandleList" block.
Table 5- 6
Parameter
NamespaceIndex
Identifier
IdentifierType
5.6 FB233 UA_NodeReleaseHandleList
5.6.1

Function and call interface - UA_NodeReleaseHandleList

Function of the block
With the block you release the node handles of the current session on the connected UA
server. This deletes the list.
The input parameter "NodeHdls" references the data block to which the handles of the
output parameter "NodeHdls" of the "UA_NodeGetHandleList" block are written.
The number of handles at the input parameter "NodeHdlCount" is always 1 so you need to
call the block separately for each handle.
92
Parameters of UDT UANodeID
S7 data Range of
type values
WORD 0 .. 65535
STRING Max. 254
WORD 1 .. 2
Meaning
Index of the name space of the server
Specifies the nodeID in the name space index.
Specifies the format and the area of application
(generally the server) of the node ID. Supported
types:
1: UAIdentifierType_String
•
String identifiers distinguish upper and lower
case.
2: UAIdentifierType_Numeric
•
Numeric identifier
Operating Instructions, 01/2017, C79000-G8976-C427-02
CP 443-1 OPC UA