Esc/vp21 command formats, Set command format, Get command format – Epson EMP-X56 User Manual
Page 4: Null command, Illegal commands, Source 21, Vol inc, Source, Source = 21
ESC/VP21 Command User's Guide for Business Projectors
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2.ESC/VP21 Command Formats
2.1.Set command format
A set command consists of a command and a parameter. Projector returns a colon after executing the command.
There are two types of parameters. One is fixed such as ON, OFF, or 21.Other is a step parameter such as INC, DEC or INIT.
INC increments the parameter by one.
DEC decrements the parameter by one.
INIT initializes the parameter.
Set command example 1
: SOURCE 21
Colon from projector Command Space Parameter Return
Set command example 2
: VOL INC
Colon from projector Command Space Parameter Return
2.2.Get command format
A get command consists of a command and ?. Projector returns a response parameter after executing the command.
Get command example
: SOURCE?
Colon from projector Command ? Return
Response parameter example
SOURCE = 21
:
Colon from projector Command = Parameter
2.3.Null command
The null command is a command code of the return key code (Hex 0D). Projector returns a colon. The null command can be used to confirm
that the projector is in operation.
2.4.Illegal commands
Projector returns “ERR” and a return key code (Hex 0D) and a colon when it receives invalid commands.
ERR
: