BitAt

Description

Returns the Bit at given location in an user buffer or in the PDU.DATA buffer.

Declaration

bool BitAt(void *Buffer, int ByteIndex, byte BitIndex);

bool BitAt(int ByteIndex, byte BitIndex);

Parameters

	Type	Dir.
Buffer	Pointer	In	Pointer to an user buffer
ByteIndex	int	In	Start byte
BitIndex	byte	In	Bit inside the byte

Example

IsOn=S7.BitAt(&MyBuffer, 140, 2);

“IsOn” is true if the third bit of the byte 140 of MyBuffer is 1.

IsOn=S7.BitAt(140, 2);

“IsOn” is true if (PDU.DATA[140] & 0x04)!=0