F_CreateDpv1WriteReqPkg

F_CreateDpv1WriteReqPkg 1:

The F_CreateDpv1WriteReqPkg function generates a DPV1 telegram for a FB_Dpv1Write of one or more parameters of a drive or the controller unit of a Sinamics Profidrive (Profidrive Specification 3.1). As Profidrives use the Motorola format and IPCs the Intel format, the function automatically swaps the byte order in the DPV1 telegram of parameters with data types with more than one byte.

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

FUNCTION F_CreateDpv1WriteReqPkg : USINT

F_CreateDpv1WriteReqPkg 2: Inputs

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

Name

Type

Description

pDpv1ReqData

ARRAY OF BYTE

Pointer to an array of 240 bytes containing the DPV1 write telegram. This telegram is created by the function.

iNumOfParams

USINT

Number of parameters to be written (1 to 39). A further limitation is the telegram size of 240 bytes.

iDriveID

USINT

The ID is 1 for the ControllerUnit, 2 for the drive object A, 3 for the drive object B of a double/triple drive. The drive ID is set in the starter software. 1..16 is possible.

F_CreateDpv1WriteReqPkg 3: Inputs/outputs

VAR_IN_OUT
    stDpv1Parameter     : ARRAY [1..iMAX_DPV1_PARAMS] OF ST_Dpv1ParamAddrEx;(* list of parameters *)
    stDpv1ValueHeaderEx : ARRAY [1..iMAX_DPV1_PARAMS] OF ST_Dpv1ValueHeaderEx;(* list of values *)
END_VAR

Name

Type

Description

stDpv1Parameter

ST_Dpv1ParamAddrEx

Array of 39 parameters to be added to the DPV1 read telegram.

stDpv1ValueHeaderEx

ST_Dpv1ValueHeaderEx

Array of 39 parameter values to be added to the DPV1 write telegram.

Requirements

Development environment

Target platform

IO hardware

PLC libraries to be integrated (category group)

TwinCAT v3.1.0

PC or CX (x86)

Beckhoff FC310x PCI, CX1500-M310, EL6731

Tc2_IoFunctions (IO)