Christie CP2000-X User Manual page 87

Sample Messages and 
Their Meaning
What is Actually Sent 
In a Message?
Available ASCII Codes 
Setup and Shutdown 
CP2000-X User Manual
020-100031-01 Rev . 1 (03-2009)
Table 3.12. Sample Messages
Desired Action
Get current Chan#
Chan# reply from proj.
Set Chan#
Get picture mute status
Picture mute reply from proj.
Set picture mute
Although you will send and read all messages as strings of ASCII characters, the
actual message travels as a sequence of bytes. Each character in a unicode message
requires 2 bytes, whereas the non-unicode requires only 1 byte. See example in
Figure 3.29 below, which illustrates a "picture mute is off" reply from the projector:
Figure 3.29. ASCII as Non-Unicode and Unicode
NOTE: Use of unicode or non-unicode in messages is auto-detected from the TPC.
All available ASCII message codes, including those with multiple parameters, are
listed and explained in Appendix B.
SETUP:

In the Admin:General menu, define which users (all, none or some) have remote
access rights.

Open an Ethernet socket to the TPC address (socket = 5000). By default, the TPC
address is 192.168.206.110. If you have additional TPCs, the installer should
have defined their addresses as 192.168.206.111, 192.168.206.112, and so on, or
used other addresses that are valid for your site.

Communication protocol should now be established (and can be confirmed with
a PNG?, if desired).
NOTE: The socket will automatically close after 15 minutes of inactivity. Program
your controller to send a PNG? message every 5-10 minutes to maintain
communication and keep the socket functioning.
IMPORTANT: To prevent shutdown of the socket, program the controller to send a
PNG? every 5-10 minutes.
You must close the application and shut down the socket properly
SHUTDOWN:
before shutting down the controller.
Message Description
(CHA?) Request by controller for current channel #
(CHA!101) Reply from proj. that current channel is 101
(CHA 101) Switch to the first channel on the TPC
(PMT?) Request by controller for picture mute status
(PMT!000) Reply from proj. that picture is mute is off.
(PMT 1) Turn the picture mute on (blank the image)
BASIC OPERATION
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