Lenze DDS Function library PLCToolBox Manual do Utilizador descarregar pdf (Página 17)

Function library LenzePLCToolBox.lib

Functions/function blocks

2.9 L_TBGetBitOfByte

2−9

L LenzePLCToolBox.lib EN 1.5

2.9 L_TBGetBitOfByte

BOOL L_TBGetBitOfByte (byInput, byBitNr)

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

L_TBGetBitOfByte

byInput

byBitNr

0...7

state?

FALSE/TRUE

Transfer parameters

Identifiers Data type Info/possible settings

byInput Byte Value

byBitNr Byte No. (0 ... 7) of the bit of byInput whose state is to be determined.

Return value: Bool

Value Meaning

FALSE/TRUE State of bit byBitNr of byInput.

Example

Calling the function in ST:

byValue := 105 (* byValue = 105 dec = 01101001 bin *)

bBit0 := L_TBGetBitOfByte(byValue, 0); (* bBit0 = TRUE *)

bBit1 := L_TBGetBitOfByte(byValue, 1); (* bBit1 = FALSE *)

bBit2 := L_TBGetBitOfByte(byValue, 2); (* bBit2 = FALSE *)

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Lenze DDS Function library PLCToolBox Manual do Utilizador Página 17