FB_OpcUaServer_SetServiceLevel

The TwinCAT OPC UA Server currently sets the ServiceLevel statically to the value 255. This function block enables the ServiceLevel to be set via an ADS interface in the server. A distinction is made between use with and without a watchdog.

Further information on the service level can be found in the ServiceLevel Documentation of the TwinCAT OPC UA Server.

Syntax

FUNCTION BLOCK FB_OpcUaServer_SetServiceLevel
VAR_INPUT
    tAmsNetId              : T_AmsNetId := '127.0.0.1.1.1';
    tTimeout               : TIME := T#5s;;
    bExecute               : BOOL;
    bWatchdog              : BOOL;
    nServiceLevel          : BYTE;
END_VAR
VAR_OUTPUT
    bBusy                  : BOOL;
    bError                 : BOOL;
    nErrorId               : UDINT;
END_VAR

Inputs

Name	Type	Description
tAmsNetId	T_AmsNetId	AmsNetId of the system on which the TwinCAT OPC UA Server runs. If no information is provided, the local host is used.
tTimeout	TIME	Maximum time for executing the ADS command. The setting is 5 seconds by default.
bExecute	BOOL	Optional parameter to specify a URI for the WebSocket opening handshake.
bWatchdog	BOOL	Determines whether the ServiceLevel is set with or without a watchdog.
nServiceLevel	BYTE	ServiceLevel that is set in the TwinCAT OPC UA Server.

Outputs

Name	Type	Description
bBusy	BOOL	Is TRUE as long as the function block is busy with processing.
bError	BOOL	Becomes TRUE when an error situation occurs.
nErrorId	UDINT	ADS error code.

Requirements

Development environment	Target platform	PLC libraries to include
TwinCAT v3.1.4026.x	IPC or CX (x86, x64, Arm®)	Tc3_OpcUa (1.1.8 or higher)