Yokogawa PC-Based MX100 - Manual (Page 34)

2-11
IM MX190-01E
MX100 -Visual C++
2
Flow of the Process
The flow chart shown below omits the declaration section.
Connect
Start the FIFO
Get the time
information
Disconnect
END
CDAQMX::close
CDAQMX::getTimeData
CDAQMX::startFIFO
CDAQMX::getFIFODataNo
CDAQMX::open
START
Get the data range
that can be retrieved
CDAQMX::talkFIFOData
Declare the retrieval
of the measured data
Last data
number?
Last data
number?
Get the
measured data
CDAQMX::getChData
CDAQMX::stopFIFO Stop the FIFO
Communication Process
First, make a connection. After making the connection, the member functions
become available. As a termination procedure, disconnect the communication.
Note
If there is no access for approximately three minutes, the MX100 drops the
connection. Drop the connection if you are not accessing the MX100 for an extended
time. Make the connection only when necessary.
Communication Connection
open("192.168.1.12")
The IP address of the MX100 is specified.
This statement implicitly specifies the communication constant
DAQMX_COMMPORT (communication port number of the MX100).
Note
Communication can also be made when constructing the class. The connection is
dropped when the class is destructed.
FIFO Start
startFIFO()
Starts the FIFO.
2.3 Programming - MX100/Visual C++ -