Lenze DDS Function library PLCToolBox Manual do Utilizador descarregar pdf (Página 18)

Function library LenzePLCToolBox.lib

Functions/function blocks

2.10 L_TBGetBitOfDword

2−10

LenzePLCToolBox.lib EN 1.5

2.10 L_TBGetBitOfDword

BOOL L_TBGetBitOfDword (dwInput, byBitNr)

This function returns the state of a single bit within a "double word" value.

L_TBGetBitOfDword

dwInput

byBitNr

0...31

state?

FALSE/TRUE

Transfer parameters

Identifiers Data type Info/possible settings

dwInput Double word Value

byBitNr Byte No. (0 ... 31) of the bit of dwInput whose state is to be determined.

Return value: Bool

Value Meaning

FALSE/TRUE State of bit byBitNr of dwInput.

Example

Calling the function in ST:

dwValue := 105

(* dwValue = 105 dec = 00000000 00000000 00000000 01101001 bin *)

bBit0 := L_TBGetBitOfDword(dwValue, 0); (* bBit0 = TRUE *)

bBit1 := L_TBGetBitOfDword(dwValue, 1); (* bBit1 = FALSE *)

bBit2 := L_TBGetBitOfDword(dwValue, 2); (* bBit2 = FALSE *)

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