Contemporary Research ICE-HE-DXL Display Control Center with Universal Rackmount User Manual
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ICE-HE-DXL Display Control Center Product Manual 042021
Command String Protocol
“$A5,,
$A5
Starts the command
The zone or high order byte of the display device
The unit or low order byte of the display device (0 for global zone)
The number of command bytes to follow
The first two-character command
Command parameters (not used in all commands)
[
Multiple commands can be concatenated, with byte count added to
Characters in command strings are expressed in a combination of hex and ASCII characters. For clarity, the following protocol examples use
the following conventions:
•
Single-
byte hex numbers are preceded by the ‘$’ symbol.
•
ASCII characters or strings are enclosed in single quotes.
•
Numbers not marked as hex or ASCII are the decimal equivalent of a single hex byte.
•
Parameters shown in < > brackets are single byte.
•
A series of multiple commands or parameters are set apart by [ ] brackets.
•
Commas separate the bytes, but they are not part of the protocol.
•
Double quotes enclose the command string, but they are not part of the protocol.
A Decimal/ASCII/Hex conversion chart may be found a
String Format
Every software application has a different denotation for handling hex, ASCII, and decimal formats. The examples in this manual are in AMX
format, which is understood by many in the control industry:
•
Hex values begin with a dollar ($) symbol
•
ASCII values are enclosed in single quotes
•
Decimal values are shown as normal
When planning to use a mixed-format structure for commands, convert the symbols to the types required by your specific software
application. For example, a
Tune Digital Channel 12-3
command to display device 280 could be shown several ways:
•
AMX Mixed Form
at = “$A5,1,24,5,’TH’,2,12,3”
•
AMX Hex Format “$A5 $01 $18 $05 $54 $48 $02 $0C $03”
•
Standard Hex (no denotation) = A5 01 18 05 54 48 02 0C 03
•
Crestron Hex Format = \0xA5\0x01\0x18\0x05\0x54\0x48\0x02\0x0C\0x03
•
RTI = Select port, Hex mode, enter A5 01 18 05 54 48 02 0C 03 - Note that when you go back to normal editing mode, the app
inserts a \x before each Hex character.
Go to
or a handy Decimal/ASCII/Hex conversion chart.