Rockwell Automation 2727-M7P20D1P1, -M7P20D1Q2,-M7P20D1Q3 MobileView Machine Terminal MT750 - Manual (Page 85)

Publication 2727-UM003D-EN-P
Windows CE Applications 6-3
Data transmission between the controller and MobileView terminal is
based on the Ethernet connection (TCP/IP protocol, Listening Port
0xCEBA). All devices must be identified by their IP address.
Several MobileView terminals may be connected to one controller, but
only one controller can be connected to a MobileView terminal at any
given time.
The VC protocol is an event-driven protocol, i.e. each station can send
data at any time without request.
Getting Started
Refer to the MobileView MT750/G750 User Document CD that ships
with the terminal for the Virtual Channel Development Kit. The
Development Kit includes the API functions, header files,.all files, and
sample code.
Activating the Virtual Channel
To enable the user of the virtual channel:
1. Select Start>Programs>MobileView>Virtual Channel
2. Double-tap the
icon on the status bar.
3. Enter server IP address and tap the Connect button.
Events Causing the Client to Send Data
• Modification of value of potentiometer (override)
• Modification of handwheel value
• Modification of key status of a key/button
• Data inquiry of server
With each event, the client sends the server a data package containing
the information about the type of event as well as the current data of
all operating elements. If the client produces several events one after
the other, and the server cannot process all of them at once, the server
will send one message containing all events.
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