Using the Serial Terminals

1. Basic Format

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

Basic control command (without parameter)

 

 

 

Start

Command

End

 

 

 

 

(STX)

 

(ETX)

 

 

 

 

1 byte

3 bytes

1 byte

 

 

 

 

 

 

 

 

 

 

Basic control command (with parameters)

 

 

 

 

 

 

 

 

 

Start

Command

Separator

Parameters

End

 

(STX)

 

(colon)

 

(ETX)

 

1 byte

3 bytes

1 byte

Undefined length

1 byte

 

 

 

 

 

 

 

Response (Callback) of the basic control command

In the period when the command can be accepted

Differs according to each command.

In the period when commands cannot be accepted or the command does not exist

 

Hexadecimal

02h

 

45h

52h

34h

30h

31h

03h

 

Character

 

 

E

R

4

0

1

 

 

 

 

 

 

 

 

 

 

 

In case of the parameter error

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

Hexadecimal

02h

 

45h

52h

34h

30h

32h

03h

 

Character

 

 

E

R

4

0

2

 

 

 

 

 

 

 

 

 

 

 

Notes:

When sending several commands, be sure to wait for a response from the projector, and send the next command after 0.5 seconds or more pass.

It might take time by the time the response returns because the command is processed in the projector. Set the time-out to 10 seconds or longer.

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