Chapter 6 Appendix — Technical information

Communication conditions (Factory default)

Signal level

RS‑232C-compliant

Sync. method

Asynchronous

Baud rate

9 600 bps

Parity

None

Character length

8 bits

Stop bit

1 bit

X parameter

None

S parameter

None

Basic format

Transmission from the computer starts with STX, then the ID, command, parameter, and ETX are sent in this order. Add parameters according to the details of control.

ID designate

ZZ, 01 to 64 and 0A to 0Z

(2 bytes) End (1 byte)

Parameter (undefined length)

Colon (1 byte)

3 command characters (3 bytes) Semi-colon (1 byte)

2 ID characters (2 bytes)

Start (1 byte)

Basic format (has subcommands)

Same as the basic format

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

Sub command (5 bytes)

 

 

 

 

 

Parameter (6 bytes)*1

 

 

 

 

 

 

 

Symbol “+” or “–” (1 byte) and setting or adjustment value (5

 

 

 

 

 

 

 

bytes)

 

 

 

 

 

 

 

 

 

 

 

 

Operation (1 byte)*1

 

 

“=” (Set the value specified using parameter)

*1 When transmitting a command which does not need a parameter, an operation (E) and parameter are not necessary.

Attention

ff If a command is transmitted after the lamp starts illuminating, there may be a delay in response or the command may not be executed. Try sending or receiving any command after 60 seconds.

ff When transmitting multiple commands, be sure to wait until 0.5 seconds has elapsed after receiving the response from the projector before sending the next command. When transmitting a command which does not need a parameter, a colon (:) is not necessary.

Note

ff If a command cannot be executed, the “ER401” response is sent from the projector to the computer. ff If an invalid parameter is sent, the “ER402” response is sent from the projector to the computer.

ff ID transmission in RS‑232C supports ZZ (ALL) and 01 to 64, as well as 0A to 0Z groups.

ff If a command is sent with a specified ID, a response will be sent to the computer only in the following cases. gg It matches the projector ID

gg ID setting is set to ALL and [RESPONSE(ID ALL)] is [ON]

gg ID setting is set to GROUP and [RESPONSE(ID GROUP)] is [ON]

ff STX and ETX are character codes. STX shown in hexadecimal is 02, and ETX shown in hexadecimal is 03.

162 - ENGLISH