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BaseAddress

Write Read TwinCAT TIA
Network REST Client ActiveClients One client

ns=2;s=DEPRAG Smart/Network/HTTP/REST/ActiveClients/0/BaseAddress

The base address of the URI for the REST API calls.

Examples:

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

Beckhoff parameter:

    bHttpReadBaseAddress
    A boolean variable that can be used to trigger the execution of the ReadBaseAddress command.
    bHttpWriteBaseAddress
    A boolean variable that can be used to trigger the execution of the WriteBaseAddress command.
    BaseAddress
    A string(255) variable in which the base address of the URI for the REST API calls is stored.
    hrHttpBaseAddress
    This can be used to monitor the execution of the command. Error codes have the type HRESULT.
    fbHttpRest
    An instance of the "FB_HttpRest" function block supplied with the DEPRAG Smart library.
    ClientId
    A String(255) variable that specifies the client that should execute the command.
    PointerToNodeValue
    A variable of the type "POINTER TO BYTE", in which the value to be set is stored.
    SizeOfNodeValue
    A UINT variable containing the length of the value to be set.
    ConnectionHandle
    "ConnectionHandle" received when establishing a connection between DEPRAG Smart Server and your OPC UA client. 


VAR
     bHttpReadBaseAddress : BOOL;
     bHttpWriteBaseAddress : BOOL;
     BaseAddress    : STRING(255);
     hrHttpBaseAddress  : HRESULT;

     fbHttpRest   : FB_HttpRest;
END_VAR

              
hrHttpBaseAddress := fbHttpRest.ReadBaseAddress(
       bExecute    := bHttpReadBaseAddress,
       ConnectionHandle  := depragSmartConnection.ConnectionHandle,
       ClientId   := '0',
       Output    => BaseAddress);
IF hrHttpBaseAddress <> S_FALSE THEN 
     bHttpReadBaseAddress := FALSE;
END_IF 
   
hrHttpBaseAddress := fbHttpRest.WriteBaseAddress(
       bExecute    := bHttpWriteBaseAddress,
       ConnectionHandle  := depragSmartConnection.ConnectionHandle,
       ClientId   := '0',
       PointerToNodeValue  := ADR(BaseAddress),
       SizeOfNodeValue  := SIZEOF(BaseAddress));
IF hrHttpBaseAddress <> S_FALSE THEN 
     bHttpWriteBaseAddress := 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".