Samsung SP-H710AE Connecting the Projector to a PC, Transmission Sequence and Data Format, Communication Format (Complies with the RS232C Standard), Other

Other

RS-232C Connection and Control

Connecting the Projector to a PC

You can connect the Projector to a PC using the RS- 232C (Crossed, Female Type) cable to control the projector.

■ Do not disconnect or connect the RS-232C cable while the Computer or the Projector is operating. It may cause serious damage to the Computer or the Projector.

■ If the PC is not properly configured, the RS-232C connection may not work properly. For further details, refer to the Computer’s product documentation.

Communication Format (Complies with the RS232C Standard)

■Transmission Speed: 115,200 bps

■Parity Bit: No

■Data Length: 8 data bits, 1 stop bit

Transmission Sequence and Data Format

Information

and Connection 232C-RS

Transmission Sequence

Argument 1 → Argument 2 → -----

Argument N, Command, Response

Structure for Variables (8 bytes)

0x08 0x11 N PN CS

N : Variable’s Number (Hexadecimal)

PN : Value of the Variable

(Implemented in 4 bytes - Hexadecimal)

CS : Checksum

(Boolean complementation of the summation of all bytes except the CS)

Command Structure (4 bytes)

CN 0x12 CC CS

CN : Command + Number of Variables (Hexadecimal)

CC: Command - Hexadecimal (Refer to the commands table)

CS : Checksum

(Boolean complementation of the summation of all bytes except the CS)

Command Structure (4 bytes)

-Confirms proper data transmission

CN 0x12 CC CS

Control

78

- No response for communication errors or invalid commands

■Transmit the following control command to transmit one or more control commands if there was a successful response for the previous transmission or there was no response in over 3 seconds.

■While controlling the Projector using a Computer, you cannot check the Projector’s status change using the Computer nor will it be displayed on the Projector’s screen. Transmit the INFORMATION command to display the current information on the Projector’s screen.

■All the control commands apply to the input source and the Projector’s status currently displayed.