Technical Information
Serial terminal
The serial connector which is on the connector panel of the projector conforms to the
Connection
Serial terminal (female)
Computer
Pin assignments and signal names
Pin No. | Signal name | Contents | |
A |
| NC | |
B | TXD | Transmitted data | |
C | RXD | Received data | |
D |
| NC | |
E | GND | Earth | |
F |
| NC | |
G | RTS | Connected internally | |
H | CTS | ||
| |||
I |
| NC |
Communication settings
Signal level | Character length | 8 bits | |
|
|
|
|
Sync. method | Asynchronous | Stop bit | 1 bit |
|
|
|
|
Baud rate | 9 600 bps | X parameter | None |
|
|
|
|
Parity | None | S parameter | None |
|
|
|
|
Basic format
|
|
|
|
|
|
|
|
|
|
|
|
|
|
| The data streaming from the computer will |
| STX | Command | : |
| Parameter | ETX |
| ||||||||
|
|
|
|
|
|
|
|
|
|
|
|
|
|
| start with STX, and proceed to Command, |
|
|
|
|
|
|
|
|
|
|
|
|
|
|
| |
| Start |
| byte |
|
|
|
|
|
|
|
| Parameter and end with ETX. You can | |||
|
|
|
| 1 byte |
|
| End | ||||||||
|
| 3 bytes | 1 byte - | ||||||||||||
| (02h) |
|
|
|
| (03h) | add the required parameter. | ||||||||
|
|
|
|
|
|
| 4 bytes | ||||||||
|
|
|
|
|
|
|
|
|
|
|
|
|
| ||
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
The projector can not receive any command for 10 seconds after the lamp is switched on. Wait 10 seconds before sending the command.
If sending multiple commands, check that a response has been received from the projector for one command before sending the next command.
When a command which does not require parameters to be sent, the colon (:) is not required.
If an incorrect command is sent from the personal computer, the ER401 command will be sent from the projector to the personal computer.
Appendix