Using the serial terminals
The main unit is equipped with SERIAL terminals located in its terminal section on the side, and this terminal is compliant with RS232C. Also a serial output terminal is provided to enable plural projector control.
Examples of connection
Single projector |
| Plural projectors |
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<Terminal section on projector side> | PC | <Terminal section on Projector 1> <Terminal section on Projector 2> | ||||
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| (female) | (male) | (female) | (male) | |
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Communication cable |
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| Communication cable | Communication cable |
Pin assignments and signal names
Serial input terminal
Pin No. Signal name | Description | |
| NC | |
TXD | Send data | |
RXD | Receive data | |
| Connected internally | |
GND | Ground | |
| NC | |
CTS | Connected internally | |
RTS | ||
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| NC |
Serial output terminal
Pin No. Signal name | Description | |
| NC | |
RXD | Receive data | |
TXD | Send data | |
| NC | |
GND | Ground | |
| NC | |
RTS | Connected internally | |
CTS | ||
NC | ||
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Communication conditions (Factory setting)
Signal level | RS232C compliant |
Synchronization method | |
Baud rate | 9 600bps |
Parity | None |
Character length | 8 bits |
Stop bit | 1 bit |
X parameter | None |
S parameter | None |
Basic format
Transmission from the computer begins with STX, then the ID, command, parameter, and ETX are sent in this order. Add parameters according to the details of control.
STX
A D
I 1
I 2
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C1
C2
C3
:
P1
P2
Pn
ETX
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| ID |
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| Semicolon |
| Colon |
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| (2 bytes) | (1 byte) |
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Start |
| ZZ, 1 to 64 and 0A to 0Z |
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| 3 command |
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(1 byte) |
| ID designate |
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| characters (3 bytes) | (undefined length) |
Attention
Note
38
•No command can be sent or received for 10 to 60 seconds after the lamp starts lighting. Try sending any command after that period has elapsed.
•When sending several commands, be sure to wait for more than 0.5 seconds after receiving a response from the projector, and then send the next command. When sending commands without parameters, a colon (:) is not necessary.
•If an unworkable command is received, the projector will send an “ER401” response to the computer.
•If an invalid command is received, the projector will send an “ER402” response to the computer.
•Projector ID supported on the RS232C interface is ZZ (ALL) and a group of 1 to 64 and 0A to 0Z.
•If a command is sent with a projector ID specified, the projector will return answer back only in the following cases: If it coincides with the projector ID,
ID specification is ALL and
•In the hexadecimal format, STX has the character code 02 and ETX the character code 03.