1
VPL-HW15
RS-232C
Simplified Command
Asynchronous
Sub Command
1. Overview
1-1. Introduction
The projector is remotely controllable over RS-232C. It is useful for setting up the projector away from
the operator.
This protocol manual describes the speci
fi
cations such as packet format and procedures for controlling the
projector.
In the following sections below, the term “CONTROLLER” is used as a device which controls the projec-
tor. CONTROLLER can be a PC or other speci
fi
c device that is able to handle RS-232C.
Although most of commands are available for both RS-232C.
1-2. Glossary of Terms
Table 1-1 Glossary of Terms
Terms Abbreviated
Description
CONTROLLER
_
Command initiator such as PCs.
PROJECTOR
_
Front
projector.
1-3. Protocol Stack Structure
The protocol stack structure diagram is shown below. Though the stack is drawn for RS-232C, the follow-
ing portions are common.
Table 1-2 Common Portions in Protocol Stack
Layer Name
Description
Sub Command
Value is assigned for projector’s functions. Refer to the section 2-1 for detail
description.
Simpli
fi
ed Command
Packet format for sending/receiving “Sub Command”. Refer to the section 3-4-1 for
detail description.
(1) RS-232C
Fig. 1-1 RS-232C Protocol Stack
“RS-232C” layer is physical portion and “Asynchronous” is the traditional protocol layer as shown in the
section 3-2.
