Programming the OPC UA client blocks
5.6 FB233 UA_NodeReleaseHandleList
CP 443-1 OPC UA
Operating Instructions, 01/2017, C79000-G8976-C427-02
93
Figure 5-5 Call interface in FBD representation
Parameter - UA_NodeReleaseHandleList
Block parameters
The following table explains the formal parameters of the program block.
Table 5- 7 Parameters of the block UA_NodeReleaseHandleList
Execute IN BOOL 0, 1 A rising edge 0 → 1 at the parameter starts
Connection identifier supplied by UA_Connect
NodeHdlCount IN WORD 1 Number of elements in the data area von
"NodeHdls". The number of must be 1.
NodeHdls IN ARRAY of
DWORD
0 .. 4 294 967 295 Array of the IDs of the handles to be canceled.
If execution of the block is successful, the han-
dles are canceled on the server and therefore
become invalid.
Timeout IN TIME 5000 .. 120000 Maximum time for establishing the connection
in milliseconds. If the value is exceeded, pro-
cessing of the block is aborted with error num-
ber B0007001.
If a value is entered outside the permitted
range, the default value of 60000 (60 seconds)
Done OUT BOOL 0, 1 Status parameter for block processing
• 0: Block execution aborted, not yet complet-
ed or not yet started
• 1: Block processing completed without er-
rors
Busy OUT BOOL 0, 1 Status parameter for block processing
• 0: Block not being processed
• 1: Block currently executing
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