Canon SX 50 - Manual (Page 10)

Projector User Commands
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Revision History / Date Changes Revised by Approved by
Communication system
Communication between the PC and projector is performed by the projector responding by sending a response to
the command sent from the PC.
If AC power is supplied to the projector, communication is possible regardless of whether the power is on or off.
Commands
Request transmissions sent from PC to the projector.
Transmission format
△<Command character strings> △<Delimiters>
<Command character strings>
Character strings consisting of 0 or more alphanumeric characters.
Refer to the Command List.
<Delimiters>
One of CR (0Dh), LF (0Ah), CR+LF (0Dh+0Ah), Null (00h)
Type
Type Description Response
■ OK Commands with a command character string length of 0. No command processing
is performed.
□ BUSY
■ WARN
■ ERR
□ GET
Null Commands
Character string
<Null command character string>
:= <Character string with length 0>
□ RANGE
■ OK Projector control command. The format is shown below.
■ BUSY
■ WARN
■ ERR
□ GET
Control command
Character string
<Control command character string>
:= <Control name>□<Parameter value>
□ RANGE
■ OK Command that sets values for each parameter. The format is shown below.
■ BUSY
■ WARN
■ ERR
<Setting command character strings>
:= <Parameter name>△=△<Parameter value>
□ GET
Setting command
Character string
For the definition of <Parameter value>, refer to "Parameter definitions. □ RANGE
□ OK Requests current value of each parameter. The format is shown below.
■ BUSY
■ WARN
■ ERR
■ GET
<Reference command character string>
:=?△<Parameter name> | GET□<Parameter name>
□ RANGE
□ OK
Requests range which can be set for each parameter. The format is shown below.
■ BUSY
■ WARN
■ ERR
□ GET
Reference
command
Character string
<Range request command character string>
:=RANGE□<Parameter name>
■ RANGE
PC
Commands
Projector
Response