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RS-232 terminal specifications
Communication configuration
To control the projector from and LCD control panel, connect
Setting | Value |
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Bits per second | 115,200 | ||
Data bits | 8 |
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Parity | None | ||
Stop bits | 1 |
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Flow control | None | ||
Emulation | VT100 | ||
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RS232 COMMAND FORMAT
All commands consist of 3 alpha characters followed by a request, all enclosed in parentheses. The request can be a read request (indicated by a “?”) or a write request (indicated by 1 to 4 ASCII digits).
A read request format (AAA?) where
( | starts the command |
AAA | denotes the command |
?denotes the read request
) | ends the command |
A read command returns the range and the current setting, for example:
Function | Command | Response |
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Brightness | (BRT?) | ||
Lamp hours | (LMP?) | ||
A write request example: (AAA####) where
( | starts the command |
AAA | denotes the command |
####denotes the value to be written (leading in zeros not necessary)
) | ends the command |
Some commands have ranges, while others are absolute. If a number greater than the maximum range is received, it is automatically set to the maximum number for that function. If a command is received that is not understood, a “?” is returned. With absolute settings, “0” is off,
The one exception is the Power command, where 0 is off and 1 is on.