Yokogawa PC-Based MX100 - Manual (Page 768)

17-34
IM MX190-01E
measDataChMX100
Syntax
int measDataChMX100(DAQMX100 daqmx100, int chNo);
Declaration
Visual Basic
Public Declare Function measDataChMX100 Lib "DAQMX100"(ByVal
daqmx100 As Long, ByVal chNo As Long) As Long
Visual Basic.NET
Public Declare Ansi Function measDataChMX100 Lib
"DAQMX100"(ByVal daqmx100 As Integer, ByVal chNo As Integer)
As Integer
C#
[DllImport("DAQMX100.dll" CharSet=CharSet.Auto,
EntryPoint="measDataChMX100")]
public static extern int measDataChMX100(int daqmx100, int
chNo);
Parameters
daqmx100 Specify the device descriptor.
chNo Specify the channel number.
Description
Gets the measured data of the specified channel number.
• If the constant for “Specify all channel numbers” is specified for the channel
numbers, all channels are processed.
• Advances one measurement point only.
• When combining FIFO specification and instantaneous value specification, the
data order changes.
• First, the amount of retrievable data is retrieved and stored, and the first data is
set as the current status data . Then, each time the function is called, the
measurement point of the stored data advances by one, and the next data is set
as the current status. When the last stored data is reached, the next retrievable
amount of data is retrieved again.
• When retrieving data by communications, other status changes are performed.
Return value
Returns an error number.
Error:
Not descriptor
No device descriptor.
Reference
CDAQMX100::measDataCh
17.1 Details of Function - MX00 (Visual C/Visual Basic/Visual Basic.NET/C#) - Status Transition Functions