F_CreateDpv1ReadReqPkg

F_CreateDpv1ReadReqPkg 1:

The “F_CreateDpv1ReadReqPkg” function creates a DPV1 telegram for an FB_Dpv1Read of one or more parameters of a drive or the controller unit of a Sinamics Profidrive (Profidrive Specification 3.1). Since Profidrives use the Motorola format and IPCs the Intel format, the function automatically swaps the byte order of parameters with data types with more than one byte in the DPV1 telegram.

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

FUNCTION F_CreateDpv1ReadReqPkg : USINT

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 containing the DPV1 read telegram. This telegram is created by the function.

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

iDriveID: The ID is 1 for the controller unit, 2 for the drive object A and 3 for the drive object B of a double/triple drive. The 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 to be added to the DPV1 read telegram (type: ST_Dpv1ParamAddrEx).

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)