Yokogawa PC-Based MX100 - Manual (Page 1067)

21-11
IM MX190-01E
21
DARWIN for Extended API - Visual Basic -
Retrieval of the Measured Data
Program Example
Attribute VB_Name = "Module1"
Public Sub Main()
'connect
comm = openDA100Reader("192.168.1.11", rc)
'get
rc = measInstChDA100Reader(comm, 0, 1)
Value = dataValueDA100Reader(comm, 0, 1)
'disconnect
rc = closeDA100Reader(comm)
End Sub
Description
Overview
Retrieves instantaneous values of the measured data from channel 1 of DARWIN
subunit number 0 and stores them in the field. Reads the measured values and
concludes the process.
Communication Connection
comm = openDA100Reader("192.168.1.11", rc)
The IP address of the DARWIN is specified. This statement specifies the
communication constant for the port number for loading the instantaneous value
data.
Retrieval of the Measured Data of Channel 1
rc = measInstChDA100Reader(comm, 0, 1)
Retrieves instantaneous values of the measured data from channel 1 of DARWIN
subunit number 0 and stores them in the field.
Reading Measured Values
Value = dataValueDA100Reader(comm, 0, 1)
Reads the measured value of channel 1 of subunit number 0 from the field where
the measured data is stored.
Comm. cut
rc = closeDA100Reader(comm)
Drops the connection.
21.4 Program for Loading Instantaneous Value Data - DARWIN/Visual Basic -