This manual is intended for qualified service personnel only.
To reduce the risk of electric shock, fire or injury, do not perform any servicing other than that
contained in the operating instructions unless you are qualified to do so. Refer all servicing to
qualified service personnel.
! WARNUNG
Die Anleitung ist nur für qualifiziertes Fachpersonal bestimmt.
Alle Wartungsarbeiten dürfen nur von qualifiziertem Fachpersonal ausgeführt werden. Um die
Gefahr eines elektrischen Schlages, Feuergefahr und Verletzungen zu vermeiden, sind bei
Wartungsarbeiten strikt die Angaben in der Anleitung zu befolgen. Andere als die angegeben
Wartungsarbeiten dürfen nur von Personen ausgeführt werden, die eine spezielle Befähigung
dazu besitzen.
! AVERTISSEMENT
Ce manual est destiné uniquement aux personnes compétentes en charge de l’entretien. Afin
de réduire les risques de décharge électrique, d’incendie ou de blessure n’effectuer que les
réparations indiquées dans le mode d’emploi à moins d’être qualifié pour en effectuer d’autres.
Pour toute réparation faire appel à une personne compétente uniquement.
This protocol manual describes the basic configuration and basic operations of various commands used
for projector. Projector can be controlled using the commands provided in “Appendix”. Using an external
CONTROLLER , etc., inputs can be switched and the power can also be turned on and off. In the following paragraphs, “CONTROLLER” means an external device such as a PC which controls projector using
these commands.
2.RS-232C (VPL-CX75 and VPL-CX76 are excluded.)
2-1.Communication Specifications
<RS-232C Communication Signal>
. Full duplex communication channels (Flow control not performed.)
. Start-stop synchronism system
. Baud rate: 38.4 kbps (bits per second)
. The bit configuration is defined as follows.
1 START Bit + 8 DATA Bits + 1 PARITY Bit + 1 STOP Bit
STARTD3D2D1D0
BIT
D4D5D6D7
(MSB)(LSB)(EVEN)BIT
EVEN Parity.....Total number of “1”s from D0 to D7 is an even number.
Communication is enabled by the use of a D-Sub 9 Pin cross (reverse) cable.
The pin assignment of D-Sub 9 Pin and D-Sub 25 Pin is as follows.
D-Sub 9 Pin
Shell = FG
3
2
7
8
6
5
1
4
9
D-Sub 25 Pin
1
2
3
4
5
6
7
8
20
22
Name
FG
Grounding for safety protection or cable shield
TxD
Transmission data
RxD
Reception data
RTS
Transmission request
CTS
Transmission permission
DSR
Data set ready
SG
GND for signal
DCD
Data channel signal carrier detection
DTR
Data terminal ready
RI
Calling display (Presence/absence of calling signal)
Pins indicated as D-Sub 25 Pin are not used.
Assured cable length: 15 m (However, assurance may not be applicable for some cables.)
The software for controlling the projector from a PC is intended for performing transmission and reception for only the TxD and RxD lines.
Therefore there is no handshake normally performed by RS-232C.
2-5.Communication Procedure
2-5-1. Outline of Communication
All communication between CONTROLLER (PC, etc.) and DEVICE (PROJECTOR) is performed by the
command block format. Communication is started by the issue of a command at CONTROLLER and
ended when the return Data is sent to CONTROLLER after DEVICE receives the command.
CONTROLLER is prohibited from sending several commands at one time. This means that after CONTROLLER sends one command, it cannot send other commands until DEVICE returns the return Data.
DEVICE sends the return Data after processing the command. The time from when CONTROLLER
sends the command until the return Data is returned differs according to the contents of the command.
n
When Sircs Direct Command is sent, return Data may not be returned in some cases.
. When sending a command from CONTROLLER, the return Data from PROJECTOR should be
received first before sending the next command. Even if the next command is sent before receiving the
return Data, since PROJECTOR will not be able to receive that command, it does not return a response
to CONTROLLER. Consequently, no error code is also sent.
The following lists the approximate waiting times for PROJECTOR to return the return Data after
CONTROLLER sends the command.
. When a communication error occurs, PROJECTOR ignores the Data received until now, and set into
the reception standby state.
. For undefined commands or commends determined as invalid by PROJECTOR, PROJECTOR will
send the “NAK” return Data to CONTROLLER .
. Take note that when Data is written when the input signal of PROJECTOR is unstable, that Data
(value) will not be incorporated.
. When INDEX specified SIRCS direct command is transmitted, leave an interval of 45 msec until the
next transmission. (Do not return the return Data (ACK, NAK) when the SIRCS direct command is
received.)
2-7.Approximate Return Waiting Times
The await-return time is approx. 30 msec.
n
This is the case, unless the communications are interfered anyway.
This section describes the specifications, performance and operations of the network service that is going
to be installed in the target projector.
3-1-1. Advertisement
The advertisement service is provided to facilitate development of a PC application that can automatically
detect a projector on the network. This function is achieved by broadcasting the equipment information
periodically to the network.
3-1-1-1. Function
The equipment information shown below is transmitted as the broadcast packet periodically (at certain
intervals).
InformationDescription
CategoryCategory of the equipment
Equipment nameName of the equipment
Serial numberSerial number of the equipment
Installation informationInstallation location of the equipment
CommunityCommunity name of the equipment
Power statusPower status of the equipment
m
. The category of projector is 0x0a.
. The power status sets ffffh if communication error occurs.
Protocol
The SDAP protocol is defined in order to provide this service.
The remote control service is provided that can control the target equipment from remote location via
network. The SDCP protocol that serves to acquire the basic information such as equipment name and
serial numbers is installed in this projector.
3-1-2-1. Function
This responds to the control command and requests for acquiring the status and information supplied
from clients.
Control request
Enables the input to be selected and picture control to be adjusted.
SIRCS request
Enables remote control by sending the SIRCS code.
Status request
Enables equipment status information such as power status, error information and power-on time to be
acquired.
Information request
Enables equipment information such as equipment name, serial number and installation information to be
acquired.
Protocol
ItemDescription
Protocol nameSDCP (Simple Display Control Protocol)
TransportTCP
Port number53484
TCP connection timeout30 seconds
3-1-2-2. Setup Items
The items that can be set for the remote control service are described below.
1) Header
The header consists of ID (16 bit), version (8 bit) and category (8 bits).
23
1102345670980123457689012354678901
Version (8)“DA” (16)Category (8)
Fig. 2 Header
ID
It is fixed to “DA”.
Version
This indicates the version number of protocol.
It is fixed to 01h (version 1).
Category
Category number 0x0a of the projector is entered here.
(Bit position)
2) Community
The community that is set in the display equipment is entered. Community consists of four alphanumeric characters (case sensitive). The display equipment has the default value “SONY” when shipped
from the factory.
23
1102345670980123457689012354678901
Community (32)
Fig. 3 Community
3) Equipment Information
Product Name
Name of equipment (Maximum twelve characters)
In case, less than twelve characters, 00h is entered in the blank space.
Serial No.
Serial number is entered.
Power Status.
Power supply status of the equipment is entered.
Location
Information of installation location (Maximum twenty four characters)
In case, less than twenty four characters, 00h is entered in the blank space.
This section describes the packet structure of SDCP.
Header
(2)
Community
(4)
Command
(4)
Data (n)
Fig. 1 Packet structure
3-3-1. Format
3-3-1-1. Header
The header consists of Version (8 bits) and Category (8 bits).
(Bit position)
110234567098012345
Version (8)Category (8)
Fig. 2 Header structure
Version
This indicates the version number of protocol.
It is fixed to 02h (version 2).
Category
Category number 0x0a of the projector is entered here. Projector checks the category number. If a
different category number is entered, the request is ignored.
3-3-1-2. Community
When the community Data matches the community that is set in the display equipment, the request is
executed. Community consists of four alphanumeric characters (case sensitive). All display equipment
has the default value “SONY” when shipped from the factory.
23
1102345670980123457689012354678901
Community (32)
n
Community should be entered with four characters. Three characters or less are not accepted.
This section describes the format of the request command and the response command.
23
1102345670980123457689012354678901
Item No (16)Data Length (8)Request/Response (8)
(1) Request
This section describes the format of the request command that is issued from the host PC to the projector.
Community
This is the same alphanumeric characters as those of community that is set in the projector to which
request is going to be sent.
Request
There are only two types of request. One is the GET request to acquire the projector information and
status. The other is the SET request to modify the projector setup.
RequestContents
SET (00h)
SET (01h) Used to acquire the installation information, equipment status and various setup values.
Used to control turning the power on/off and to control the input selector, and to change the various setups.
Item No.
This is the item number of the request target.
Data Length
This is the length of the Data accompanying the request. The maximum length is 128 bytes. If there is no
Data, it is 0.
(Bit position)
Data
This is the Data accompanying the request.
(2) Response
This section describes the format of the response command which is used to return a response to the host
PC from the projector.
Community
The same alphanumeric characters as those of the request is entered.
Response
The response returns the result of executing the request from the host PC.
ResponseContents
NG (00h)Indicates that the request is illegal or cannot be executed.
OK (01h)Indicates that the request was executed correctly.
Item No.
The same value as those of the request is entered.
Data Length
This is the length of the Data accompanying the response. The maximum length is 128 bytes. If there is
no Data, it is 0.