Yokogawa PC-Based MX100 - Manual (Page 1142)

24-51
IM MX190-01E
DARWIN for Extended API - Visual C/Visual Basic/Visual Basic.NET/Visual C# -
24
dataStringValueDA100
Syntax
int dataStringValueDA100(DAQDA100 daqda100, int chType, int
chNo, char * strValue, int lenValue);
Declaration
Visual Basic
Public Declare Function dataStringValueDA100 Lib
"DAQDA100"(ByVal daqda100 As Long, ByVal chType As Long, ByVal
chNo As Long, ByVal strValue As String, ByVal lenValue As
Long) As Long
Visual Basic.NET
Public Declare Ansi Function dataStringValueDA100 Lib
"DAQDA100"(ByVal daqda100 As Integer, ByVal chType As Integer,
ByVal chNo As Integer, ByVal strValue As String, ByVal
lenValue As Integer) As Integer
C#
[DllImport("DAQDA100.dll" CharSet=CharSet.Auto,
EntryPoint="dataStringValueDA100")]
public static extern int dataStringValueDA100(int daqda100,
int chType, int chNo, byte[] strValue, int lenValue);
Parameters
daqda100 Specify the device descriptor.
chType Specify the channel type.
chNo Specify the channel number.
strValue Specify the field where the string is to be stored.
lenValue Specify the byte size of the field where the string is to be stored.
Description
Gets the measured value of the specified channel (channel type and number) from
the stored measured data.
• Converts into a string and stores it in the specified field.
• The string stored in the field includes the terminator (NULL).
• The return value is the length of the actual string. The return value does not
include the terminator.
• Returns 0 if it does not exist.
• The strings that can be stored are, in general, ASCII strings.
Return value
Returns the length of the string.
Reference
CDAQDA100::getClassDataBuffer
CDAQDARWINDataBuffer::getClassDARWINDataInfo
CDAQDARWINDataInfo::getStringValue
24.2 Details of Functions - DARWIN (Visual C/Visual Basic/Visual Basic.NET/C#) - Retrieval Functions