RS-232C connector specifications (DSUB-9P)
Pin No. | Code | Name | Direction of data | |||
Presenter | PC | |||||
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1 | CD | Carrier Detect |
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2 | RXD | Received Data |
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3 | TXD | Transmitted Data |
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4 | DTR | Data Terminal Ready |
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5 | SG | Signal Ground |
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6 | DSR | Data Set Ready |
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7 | RTS | Request To Send |
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8 | CTS | Clear To Send |
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Data format specifications
This command is executed in the form of
•The communication command always starts with STX (Start of Text) [02H], and ends with ETX (End of Text) [03H].
•If the communication format or command name is wrong, NAK (Negative Acknowledgement) [15H] will be sent from the Presenter as a result of failing to receive correctly.
•When the communication format is correctly received, the Presenter sends ACK (Normal Acknowledgement) [06H].
Transmission Command (PC 
Presenter)
Each operation command is executed in ASCII code, and transmitted in a set of 7 bytes as follows:
| S |
(PC) | T |
| X |
Command
Parameter
Data
E T X
| [02H] |
(Presenter) | ACK |
[06H]
[03H]
All response data are sent in ASCII code in correspondence to the parameters on the table of the communication commands.
• Status request format (Parameter 0)
| S | Lighting | Input |
| Color | Pointer |
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| Local | E | |
(Presenter) | T | 30H | 30H | Pause | T | ||||||
selection | selection | /B&W | display | Lock out | |||||||
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• Status request format (Parameter 2)
(Presenter)
• ROM version
S T X
30H
Gamma selection
30H
Aparture selection
30H
30H
30H
30H
E T X
(Presenter)
S T X
V
56H
H
48H
E
45H
H
H
H
E T X
Version
25
