Fb232 Ua_Nodegethandlelist; Function And Call Interface - Ua_Nodegethandlelist - Siemens SIMATIC S7-400 Operating Instructions Manual

Parameter Declaration
Done OUT
Busy OUT
Error OUT
ErrorID OUT
5.5

FB232 UA_NodeGetHandleList

5.5.1

Function and call interface - UA_NodeGetHandleList

Function of the block
With the block, you register nodeIDs on the connected UA server.
The UA server returns the handles. These are output by the block with the "NodeHdls"
parameter. You access the items of the node handles with the blocks "UA_ReadList" and
"UA_WriteList" at their input parameter "NodeHdls".
The nodeIDs of the target server that you specify in the "NodeIDs" input parameter must be
known to you. You store these in a UDT "UANodeIDs".
The number of target nodes at the input parameter "NodeIDCount" is always 1 so you need
to call the block separately for each nodeID
CP 443-1 OPC UA
Operating Instructions, 01/2017, C79000-G8976-C427-02
S7 data type Range of values
BOOL 0, 1
BOOL 0, 1
BOOL 0, 1
DWORD See "Meaning"
Programming the OPC UA client blocks
5.5 FB232 UA_NodeGetHandleList
Meaning
Status parameter for block processing
0: Block execution aborted, not yet complet-
•
ed or not yet started
1: Block processing completed without er-
•
rors
Status parameter for block processing
0: Block not being processed
•
1: Block currently executing
•
Error code
0: No error
•
1: An error has occurred. See "" parameter
•
"ErrorID".
Output of the error number when "Error" = 1.
For the significance of the numbers, refer to the
section Error numbers (Page 107).
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