Yokogawa PC-Based MX100 - Manual (Page 405)

7-7
IM MX190-01E
DARWIN - Visual C++ -
7
Flow of the Process
The flow chart shown below omits the declaration section.
Last channel?
Connect
Declare the retrieval
of the measured data
Get the measured data
channel by channel
Disconnect
END
CDAQDARWIN::close
CDAQDARWIN::getChDataByBinary
CDAQDARWIN::talkDataByBinary
CDAQDARWIN::open
START
Communication Process
First, make a connection. After making the connection, the member functions
become available. As a termination procedure, disconnect the communication.
Communication Connection
open("192.168.1.11")
The IP address of the DARWIN is specified. The communication report specifies the
communication constant “DAQDARWIN report number.”
Note
Communication can also be made when constructing the class. Connection is dropped
when the class is destructed.
Talker
talkDataByBinary(0, 1, 0, 2, datetime)
Sends the retrieval request of the measured data of channels 1 and 2 of subunit
number 0 and retrieves the time information (declares the retrieval of the measured
data).
Retrieval of the Measured Data
getChDataByBinary(datainfo, &flag)
Gets the measured data channel by channel. It is repeated up to the specified
channel. The end is determined by the flag status of “end data.”.
Communication Disconnection
close()
Drops the connection.
7.3 Programming - DARWIN/Visual C ++ -