DataqSerial Control > Properties > ChannelCount

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ChannelCount

Applies to:

DATAQSERIAL Active X Control

Description:

Designates the number of channels to enable. The default is one channel. DataqSerial always enables channels in order (i.e., if 2 channels are enabled, it is always channels 1 and 2 in order, with the exception of a DI-194 (see below)). If ChannelCount is set higher than the total number of possible channels for the data acquisition instrument, ChannelCount will default to 1. For example, since a DI-194 has only 4 channels, if the ChannelCount is set to 10, only one channel will be enabled.

Syntax:

DataqSerial1.ChannelCount=variable (where variable is the number of channels enabled)

Variable:

Integer

Example:

Private Sub Start_Click()

'sets channel count to 4

DataqSerial1.ChannelCount = 4

DataqSerial1. EventLevel=20

DataqSerial1. Start

Label1.Caption = "You have " & DataqSerial1.ChannelCount & " channels enabled."

End Sub

 

Private Sub Stop_Click()

DataqSerial1. Stop

End Sub

 

Private Sub DataqSerial1_ NewData (ByVal Count As Integer)

DQChart1. Chart (DataqSerial1. GetData)

End Sub

 

Note to DI-194 users

ChannelCount is configured in the following manner:

To enable channels 1 and 2 use DataqSerial1.ChannelCount=2.

To enable all four channels use DataqSerial1.ChannelCount=4.

To enable channels out of sequence, use the following method: DataqSerial1.ChannelCount = 100 + H, where H is the binary channel selector. Refer to the binary channel selector table below:

H=1 enables channel 1

H=2 enables channel 2

H=3 enables channels 1 & 2

H=4 enables channel 3

H=5 enables channels 1 & 3

H=6 enables channels 2 & 3

H=7 enables channels 1 & 2 & 3

H=8 enables channel 4

H=9 enables channels 1 & 4

H=10 enables channels 2 & 4

H=11 enables channels 1 & 2 & 4

H=12 enables channels 3 & 4

H=13 enables channels 1 & 3 & 4

H=14 enables channels 2 & 3 & 4

H=15 enables channels 1 & 2 & 3 & 4

Example:

DataqSerial1.ChannelCount = 100 + 12

'enables channels 3 and 4

 

 

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