CogInputLines.GetGroupValue Method

CogInputLines GetGroupValue Method

Cognex VisionPro 9.8

Reads a group of up to 32 input line values as a binary number.

Namespace: Cognex.VisionPro
Assembly: Cognex.VisionPro.Core (in Cognex.VisionPro.Core.dll) Version: 75.1.0.0

Syntax

public int GetGroupValue(
	int firstIndex,
	int numberOfBits
)

public int GetGroupValue(
	int firstIndex,
	int numberOfBits
)

Public Function GetGroupValue ( 
	firstIndex As Integer,
	numberOfBits As Integer
) As Integer

Public Function GetGroupValue ( 
	firstIndex As Integer,
	numberOfBits As Integer
) As Integer

public:
int GetGroupValue(
	int firstIndex, 
	int numberOfBits
)

public:
int GetGroupValue(
	int firstIndex, 
	int numberOfBits
)

Parameters

firstIndex: Type: System Int32
The first input line.

numberOfBits: Type: System Int32
The number of lines to read.

Return Value

Type: Int32

Exceptions

Exception	Condition
CogCollectionInvalidIndexException	firstIndex is < 0 or >= Count.
ArgumentException	numberOfBits is < 1 or > 32.

Remarks

Reads a group of up to 32 input line values as a binary number.

The first input line, specified by firstIndex has a binary value of 1. The last input line, specified by firstIndex+numberOfBits-1, has a binary value of 2^(numberOfBits-1).

Note: The line values you specify are logical lines. Make sure that the frame grabber and I/O adapter configuration that you are using maps the range of logical lines you specify as contiguous physical lines.