Lenze Global Drive PLC Developer Studio Instrukcja Użytkownika Pobierz pdf (Strona 17)

LenzeFpiDrv.lib function library

Functions

3.1 Initialisation (L_Rs232Open)

3−2

LenzeFpiDrv.lib EN 1.1

Feedback value

Data type Bit Value Meaning Priority

Double Word 0

0 Driver is initialised. −

1 Error during initialisation.

0 Driver setting Ok.

1 Selected driver ( wDrvNr ) is not available on target system.

0 Baud rate setting Ok.

1 Selected baud rate ( dwBaudrate ) is not available.

0 Data bits setting Ok.

1 Wrong number of data bits ( byNumberOfDataBits ).

0 Stop bits setting Ok.

1 Wrong number of stop bits ( byNumberOfStopBits ).

0 Parity setting Ok.

1 Wrong parity setting ( byParity ).

6−15 Reserved for future extensions (bits set to 0).

16−31 Version of the FPI driver

Format: main version/subversion (e. g. 0103hex = version 1.03)

Example

Calling up the function in ST with decading of the feedback value:

(* open FPI − returns g_dwOpenStatus *)

g_dwOpenStatus := L_Rs232Open (30, 4800, 8, 1, 1);

g_bInitOK := NOT DWORD_TO_BOOL (g_dwOpenStatus AND 16#0000_00001);

g_bDriverFail := DWORD_TO_BOOL ( SHR (g_dwOpenStatus,1) AND 16#0000_0001);

g_bBaudrateFail:= DWORD_TO_BOOL ( SHR (g_dwOpenStatus,2) AND 16#0000_0001);

g_bDatabitsFail:= DWORD_TO_BOOL ( SHR (g_dwOpenStatus,3) AND 16#0000_0001);

g_bStopbitsFail:= DWORD_TO_BOOL ( SHR (g_dwOpenStatus,4) AND 16#0000_0001);

g_bParityFail := DWORD_TO_BOOL ( SHR (g_dwOpenStatus,5) AND 16#0000_0001);

g_wVersion := DWORD_TO_WORD ( SHR (g_dwOpenStatus,16) AND 16#FFFF);

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Lenze Global Drive PLC Developer Studio Instrukcja Użytkownika Strona 17