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IsStarted

Read TwinCAT TIA
Network MQTT Client ActiveClients One client

ns=2;s=DEPRAG Smart/Network/MQTT/ActiveClients/0/IsStarted

Indicates whether the MQTT client is started.

Examples:

In addition to the parameters already explained, the following variables must be created / transferred for the implementation in TwinCAT 3:

Beckhoff parameter:

    bMqttIsStarted
    A boolean variable that can be used to trigger the execution of the IsStarted command.
    OutputMqttIsStarted
    A boolean variable to which the return value of the IsStarted command is written.
    hrMqttIsStarted
    This can be used to monitor the execution of the command. Error codes have the type HRESULT.
    fbMqtt
    An instance of the "FB_Mqtt" function block supplied with the DEPRAG Smart library.
    ClientId
    A String(255) variable that specifies the client that should execute the command.
    ConnectionHandle
    "ConnectionHandle" received when establishing a connection between DEPRAG Smart Server and your OPC UA client. 


VAR
   bMqttIsStarted          : BOOL;
   OutputMqttIsStarted         : BOOL;
   hrMqttIsStarted          : HRESULT;

   fbMqtt  : FB_Mqtt;
END_VAR

hrMqttIsStarted := fbMqtt.IsStarted(
       bExecute    := bMqttIsStarted,
       ConnectionHandle  := depragSmartConnection.ConnectionHandle,
       ClientId   := '0',
       Output    => OutputMqttIsStarted);
IF hrMqttIsStarted <> S_FALSE THEN 
    bMqttIsStarted := FALSE;
END_IF

For examples and explanations regarding the calls of nodes via Siemens TIA Portal please refer to the sub-menu "Siemens TIA Portal" in section "Getting Started".