FB_SoERead_ByDriveRef

VAR_INPUT

VAR_INPUT
    stDriveRef      : ST_DriveRef; (* contains sNetID of EcMaster, nSlaveAddr of EcDrive, nDriveNo of EcDrive, either preset or read from NC *)
    nIdn            : WORD; (* SoE IDN: e.g. "S_0_IDN + 1" for S-0-0001 or "P_0_IDN + 23" for P-0-0023*)
    nElement        : BYTE; (* SoE element.*)
    pDstBuf         : DWORD; (* Contains the address of the buffer for the received data. *)
    cbBufLen        : UDINT; (* Contains the max. number of bytes to be received. *)
    bExecute        : BOOL; (* Function block execution is triggered by a rising edge at this input.*)
    tTimeout        : TIME := DEFAULT_ADS_TIMEOUT;(* States the time before the function is cancelled. *)
END_VAR

stDriveRef: The drive reference can be linked in the System Manager between PLC and drive. The link can be done to an instance of the ST_PlcDriveRef. The structure ST_PlcDriveRef contains the NetID as byte array. The byte array can be converted to a string. See ST_DriveRef.

nIdn: Identification number of the parameter that is to be read.

nElement: Element number of the parameter that is to be read. The following values are allowed:

pDstBuf:The address (pointer) of the buffer to be read.

cbBufLen:The maximum available buffer size for the data to be read, in bytes.

bExecute: The block is activated by a rising edge at this input.

tTimeout: Maximum time allowed for the execution of the function block.

VAR_OUTPUT

VAR_OUTPUT
    bBusy         : BOOL;
    bError        : BOOL;
    iAdsErrId     : UINT;
    iSercosErrId  : UINT;
    dwAttribute   : DWORD;
END_VAR

bBusy: This output is set when the function block is activated and remains set until an acknowledgement is received.

bError: This output is set up after the bBusy output has been reset if there has been an error in transmission of the command.

nErrId: Supplies the ADS error code associated with the most recently executed command if the bError output is set.

iSercosErrId: Supplies the Sercos error code associated with the most recently executed command if the bError output is set.

Requirements