UA_Write

This function block writes values to a given node and connection handle.

Inputs

VAR_INPUT
    Execute        : BOOL;
    ConnectionHdl  : DWORD;
    NodeHdl        : DWORD;
    stNodeAddInfo  : ST_UANodeAdditionalInfo; 
    pVariable      : PVOID;
    cbData         : UDINT;     
    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 that was previously output by the function block UA_NodeGetHandle.
stNodeAddInfo	ST_UANodeAdditionalInfo	Defines additional information, e.g. which IndexRange or which attribute is to be written (by default, the' Value' attribute is used). Specified by STRUCT ST_UANodeAdditionalInfo.
pVariable	PVOID	Pointer to data to be written.
cbData	UDINT	Sets the size of the values to be written.
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_VAR

Name	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