Christie TruLife+ Griffyn 4K32-RGB Technical Reference page 9

The smallest step size for any parameter is always 1. For some controls (such as Size) the value
displayed on the screen has a decimal point (for example, 0.200 to 4.000). In this case, the values
used for the serial communications is an integer value (for example, 200 to 4000), not the decimal
value seen on the screen.
Available message types
Message type Description
Set A command to set a projector parameter at a specific level, such as changing the
brightness.
Request A request for information, such as what is the current brightness setting.
Reply Returns the data in response to a request or as confirmation of a command.
Basic message structure
Understand the component fields that comprise a standard ASCII message.
Components
Start and end of message
Prefix characters (optional) To acknowledge that Christie TruLife+ has responded, and/or maximize message
Function code
+Subcode
Christie TruLife+ Technical Reference–Serial Commands
020-103316-01 Rev. 1 (09-2020)
Copyright © 2020 Christie Digital Systems USA, Inc. All rights reserved.
Description
Every message begins with the left bracket character and ends with the right bracket
character.
If the start character is received before an end character of the previous message,
the partial (previous) message is discarded.
integrity, insert one or two special characters before the three-character function
code:
• $ (Simple Acknowledgment)—Causes a dollar sign ($) character to be sent from
Christie TruLife+ when it has finished processing the message.
• # (Full Acknowledgment)—Causes an echo of the message as a reply to be sent
from Christie TruLife+ when it has finished processing the message.
• & (Checksum)—Allows a checksum to be put as the last parameter in the
message for verification at Christie TruLife+.
The Christie TruLife+ function you want to work with, such as channel selection or
gamma, is represented by a three-character ASCII code (A-Z, upper or lower case).
This function code appears immediately after the leading bracket that starts the
message. In messages sent to Christie TruLife+ that do not have a subcode, a space
between the function code and the first parameter (or special character) is optional.
The Christie TruLife+ function you want to work with may have one or more
subcodes that allow you to select a specific source, image, channel or subfunction.
The subcode is represented by a four-character ASCII code (A-Z, upper or lower
case, and 0-9). This subcode appears immediately after the function code, with a
plus sign (+) character to separate the code and subcode. If there is no subcode, the
plus sign (+) is also omitted. In messages sent to Christie TruLife+ that have a
subcode, a space between the subcode and the first parameter (or special character)
is optional.
Communicating with Christie TruLife+
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