Ceiling Presenter Instruction Manual

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Data Format Specifications
This command is executed in the form of 1-command/1 packet. The next command is not
accepted until the previous processing is completed.
• The communication command always starts with STX (Start of Text) , and ends with ETX
(End of Text) .
• If the communication format or command name is wrong, NAK (Negative
Acknowledgement) will be sent from this product.
• When the communication format is correctly received, this product sends ACK (Normal
Acknowledgement).
■ Transmission command (PC → Ceiling Presenter)
Each operation command is executed in ASCII code, and transmitted in a set of 7 bytes as
follows:
S
T
X
E
T
X
Command
(
PC
)
(Ceiling
Presenter
)
→ ACK
Data Parameter
Connection
If the RS-232C cable is not correctly connected between this product and the PC, no
acknowledgement is transmitted. Connect the RS-232C cable correctly, and fix it firmly with
the connector set screws before the operation.
Transmission Specifications
• Full duplex start-stop sync. mode
• Start bit : 1 bit
• Data bit : 8 bits
• Stop bit : 1 bit
• Parity bit : None
• X parameter : None
• Baud rate (Communication speed) : 9600bps