Sony VPL-VW50 Service Manual ▷ View online
1
VPL-VW50
EVEN Parity ...... Total number of “1”s from D0 to D7 is an even number.
8 0
...... Total number of “1”s from D0 to D7 is an odd number.
8 1
D4
D5
D6
D7
(MSB)
(LSB)
(EVEN)
BIT
PARITY STOP
BIT
START
D3
D2
D1
D0
1. Introduction
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 follow-
ing paragraphs, “CONTROLLER” means an external device such as a PC which controls projector using
these commands.
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 follow-
ing paragraphs, “CONTROLLER” means an external device such as a PC which controls projector using
these commands.
2. RS-232C
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.
. 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
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VPL-VW50
2-2. Command Block Format
The code from B0 to B7 as described below are transmitted.
START CODE : 0xA9
B0
B1
B2
B4
B3
DATA
ITEM NUMBER
ACK / NAK
ITEM NUMBER
SET / GET
ACK
DUMMY DATA
CHECK SUM
END CODE : 0x9A
DATA
REPLY
B5
B6
B7
Transmission from
the Master side
Reception in
the Master side
Reception in the Master side
(With Data)
B0 START CORD
Common in the all FORMAT
B6 CHECK SUM
B1 to B5 are calculated by OR;
<Example of Calculation>
0xA9
1010
1001
0xA9
1010
1001
0xA9
1010
1001
0x9A
1001
1010
Answer
1010
1001
Answer
1011
1011
0xA9
0xBB
B7 END CODE
Common in the all FORMAT
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VPL-VW50
2-3. Block Format
START CODE
B0
B1
B2
B4
B3
DATA
ITEM NUMBER
SET / GET
CHECK SUM
END CODE
B5
B6
B7
START CODE
B0
B1
B2
B4
B3
DUMMY DATA
ACK / NAK
ACK
CHECK SUM
END CODE
B5
B6
B7
START CODE
B0
B1
B2
B4
B3
DATA
ITEM NUMBER
REPLY
CHECK SUM
END CODE
B5
B6
B7
Transmission from the Master side
Reception in the Master side
Reception in the Master side (With Data)
Data transmission to the Projector
Start of Command
Set the Data Category Value desired.
Refer to the Appendix Table 1 for details.
Refer to the Appendix Table 1 for details.
SET: 0x00 (Set data)
GET: 0x01 (Get data)
GET: 0x01 (Get data)
SET: Data to be set (Refer to the Appendix Table 2)
GET: Unused. Set Dummy data [0x00, 0x00]
GET: Unused. Set Dummy data [0x00, 0x00]
Check Sum
End of Command
Receive results of the data transmission from the Projector.
Start of Command
Results correspond with the data transmission
Refer to the Appendix Table 3 for the data in detail.
Refer to the Appendix Table 3 for the data in detail.
[0x03]
Express Reply data either of ACK, or NAK
Express Reply data either of ACK, or NAK
This data does not mean any senses.
Dummy Data [0x00, 0x00] is stored.
Dummy Data [0x00, 0x00] is stored.
Check Sum
End of Command
Check Sum
End of Command
Receive data from the Projector
Start of Command
Data to acquire
Refer to the Appendix Table 1 in detail.
Refer to the Appendix Table 1 in detail.
[0x02]
Express data to be Reply data
Express data to be Reply data
Received data
Refer to the Appendix Table 2 in detail.
Refer to the Appendix Table 2 in detail.
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VPL-VW50
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 CON-
TROLLER 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.
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 CON-
TROLLER 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 Sircs Direct Command is sent, return data may not be returned in some cases.
2-4. Connection
<RS-232C Connection>
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.
The pin assignment of D-Sub 9 Pin and D-Sub 25 Pin is as follows.
Pins indicated as D-Sub 25 Pin are not used.
Assured cable length: 15 m (However, assurance may not be applicable for some cables.)
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 recep-
tion for only the TxD and RxD lines.
Therefore there is no handshake normally performed by RS-232C.
tion for only the TxD and RxD lines.
Therefore there is no handshake normally performed by RS-232C.
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
TxD
RxD
RTS
CTS
DSR
SG
DCD
DTR
RI
Grounding for safety protection or cable shield
Transmission data
Reception data
Transmission request
Transmission permission
Data set ready
GND for signal
Data channel signal carrier detection
Data terminal ready
Calling display (Presence/absence of calling signal)
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