Elmo Ceiling Presenter HV-C1000XG User Manual

Page 34

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:

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