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Projector Control
Page 2 Version 1.0
1 SETTING UP.................................................................................................................................. 4
1.1 RS232 CONTROL CABLES .............................................................................................................. 4
1.2 RS232 SETTINGS ............................................................................................................................ 4
2 GENERAL...................................................................................................................................... 5
3 FUNCTION TYPE........................................................................................................................ 5
4 PROTOCOL MESSAGES ............................................................................................................ 5
4.1 MESSAGE FORMATS ....................................................................................................................... 5
4.1.1 Message Head.......................................................................................................................... 5
4.1.2 Message Body.......................................................................................................................... 6
5 COMMAND RETURN CODES................................................................................................... 7
6 TRANSACTION EXAMPLES ..................................................................................................... 7
6.1.1 Example 1: Set ........................................................................................................................ 7
6.1.2 Example 2: Get ....................................................................................................................... 7
6.1.3 Example 3: Hex sequence for Set Brightness to 70% => 0.7*255 = 178 = 0xB2............... 8
6.1.4 Example 4: Hex sequence for power on (with CRC deactivated)......................................... 8
6.1.5 Example 5: Hex sequence for get Brightness........................................................................ 8
6.1.6 Example 5: To get ASCII Information Set Parameter in the State String function ........... 8
7 TABLE OF FUNCTIONS............................................................................................................. 9
APPENDIX 1: CRC CALCULATION ALGORITHM.......................................................................... 11