FB_OpcUAServerGetStatus

The function block enables the current status (Running, NotResponding) of a TwinCAT OPC UA Server to be read. It should be noted at this point that this function block deals with the ADS interface of the OPC UA Server. If the OPC UA Server is restarted or shut down, the ADS interface of the server remains accessible. The ADS interface can only be closed by terminating the server process.

Syntax

Definition:

FUNCTION_BLOCK FB_OpcUAServerGetStatus
VAR_INPUT
    sNetId             : T_AmsNetId;
    bGetStatus         : BOOL;
    tTimeout           : TIME;
END_VAR
VAR_OUTPUT
    eOPCUAServerStatus : E_OPCUAServerStatus;
    bDone              : BOOL;
    bBusy              : BOOL;
    bError             : BOOL;
    nErrorId           : UDINT;
END_VAR

Inputs

Name	Type	Description
sNetId	T_AmsNetId	AmsNetId of the system on which the TwinCAT OPC UA Server runs.
bGetStatus	BOOL	A rising edge activates processing of the function block.
tTimeout	TIME	ADS Timeout

Outputs

Name	Type	Description
eOPCUAServerStatus	E_OpcUAServerStatus	Contains status information about the server.
bDone	BOOL	TRUE when processing of the function block is complete.
bBusy	BOOL	TRUE as long as processing of the function block is in progress.
bError	BOOL	Becomes TRUE as soon as an error situation occurs.
nErrorId	UDINT	Contains the error code when an error (bError) occurs.