F_CreateDpv1ReadReqPkgPNET : USINT

F_CreateDpv1ReadReqPkgPNET : USINT 1:

The function "F_CreateDpv1ReadReqPkgPNET" creates a DPV1 telegram for a FB_Dpv1Read of one or multiple parameters of a drive or the controller unit of a Sinamics Profidrive (Profidrive specification 3.1) via Profinet. Since the profidrive uses the Motorola format and the IPC uses the Intel format, the function automatically swaps the bytes in the DPV1 telegram of parameters with data types bigger than one byte.

The function returns the current length of the DPV1 telegram in bytes (max. 240 bytes).

VAR_INPUT

VAR_INPUT
    pDpv1ReqData    : POINTER TO ARRAY [1..iMAX_DPV1_SIZE] OF BYTE; (* DPV1 read request *)
    iNumOfParams    : USINT; (* 1..39; else: reserved *)
    iDriveId        : USINT;
END_VAR

pDpv1ReqData: Pointer to an array of 240 bytes, which contains the DPV1 read request telegram. This telegram is being created in this function.

iNumOfParams: Number of parameters to be read (1 to 39). Another limitation is the telegram size to 240 bytes.

iDriveID: The drive ID is 1 for the Controller Unit, 2 for the A drive, 3 for the B drive of double/triple drive. Drive ID is set in the Starter software. 1..16 is possible.

VAR_IN_OUT

VAR_IN_OUT
    stDpv1Parameter : ARRAY [1..iMAX_DPV1_PARAMS] OF ST_Dpv1ParamAddrEx; (* list of parameters *)
END_VAR

stDpv1Parameter: Array of 39 parameters, which have to be added to the DPV1 read request telegram.

Requirements

Development environment

Target platform

IO hardware

PLC libraries to include

TwinCAT v2.11.0, Build > 1553

TwinCAT v2.11.0 R2, Build > 2024

PC (i386)

 

Beckhoff EL6632

TcIoFunctions.Lib

( Standard.Lib; TcBase.Lib; TcSystem.Lib; TcUtilities.Lib linked automatically )