Christie QuadHD84 Guia De Inicio Rapido página 13

RS-232C
RJ-45
RS232C CheckSum
Prefix code
command
#0
Set Power 0xCC
We can make CheckSum with Header (5 bytes) and Payload(4 bytes).
For example:
(0xCC) XOR (0x33) XOR (0x01 = Set ID) XOR (0x00) XOR (0x04) XOR (0x10) XOR (0x01 =
ON) XOR (0x00) XOR (0x00) = 0xEB
* Full list of RS-232C / RJ-45 commands available on request.
QuadHD84 Quick Start Guide
020-000672-01 Rev. 1 (10-2013)
Controlling the Multiple Product
Header (5 bytes)
Prefix code Set Payload
#1 ID Type
0x33 0
(Prefix code#0) XOR (Prefix code#1) XOR (Set ID) XOR (Command Payload Type) XOR
(# of Payload bytes) XOR (Command) XOR (data #0) XOR (data #1) XOR (data#2) =
CheckSum
Payload (4 bytes)
# of payload
Command
bytes
4 0x10
A2
data #0 data #1 data #2
"0 : 0ff reserved reserved
1 : On" (0x00) (0x00)
Checksum
(1byte)
CS #0
Header XOR
Payload