UA_NodeReleaseHandle
This function block releases a node handle.
Inputs
VAR_INPUT
Execute : BOOL;
ConnectionHdl : DWORD;
NodeHdl : DWORD;
Timeout : TIME := DEFAULT_ADS_TIMEOUT;
END_VAR Name | Type | Description |
|---|---|---|
Execute | BOOL | The command is triggered by a rising edge at this input. |
ConnectionHdl | DWORD | Connection handle previously output by the function block UA_Connect. |
NodeHdl | DWORD | Node handle to be released. |
Timeout | TIME | Time until the function is aborted. DEFAULT_ADS_TIMEOUT is a global constant, set to 5 seconds. |
Outputs
VAR_OUTPUT
Done : BOOL;
Busy : BOOL;
Error : BOOL;
ErrorID : DWORD;
END_VARName | Type | Description |
|---|---|---|
Done | BOOL | Switches to TRUE if the function block was executed successfully. |
Busy | BOOL | TRUE until the function block has executed a command, at the most for the duration of the "Timeout" at the input. The inputs accept no new command as long as Busy = TRUE. It is not the connection time that is monitored but the reception time. |
Error | BOOL | Switches to TRUE if an error occurs while executing a command. The command-specific error code is included in ErrorID. |
ErrorID | DWORD | Contains the command-specific ADS error code of the most recently executed command. |
Requirements
Development environment | Target platform | PLC libraries to include |
|---|---|---|
TwinCAT 3.1 | Win32, Win64, CE-X86, CE-Arm® | Tc3_PLCopen_OpcUa |