Sharp LC-19A35X-BK PC Control of the TV, Communication conditions, Communication procedure, ? ? ?

Connecting a PC

PC Control of the TV

•When a programme is set, the TV can be controlled from the PC using the RS-232C terminal.

The input signal (PC/video) can be selected, the volume can be adjusted and various other adjustments and settings can be made, enabling automatic programmed playing.

•Attach an RS-232C cable cross-type (commercially available) to the Din/D-sub RS-232C for the connections.

NOTE

• This operation system should be used by a person who is accustomed to using PCs.

Communication conditions

Set the RS-232C communications settings on the PC to match the communications conditions of the TV. The communications settings of the TV are as follows:

Baud rate:	9,600 bps
Data length:	8 bits
Parity bit:	None
Stop bit:	1 bit
Flow control:	None

Communication procedure

Send the control commands from the PC via the RS-232C connector.

The TV operates according to the received command and sends a response message to the PC.

Do not send multiple commands at the same time. Wait until the PC receives the OK response before sending the next command.

Command format

Eight ASCII codes e CR

C1 C2 C3 C4 P1 P2 P3 P4

Command 4-digits: Command. The text of four characters.

Parameter 4-digits: Parameter 0 — 9, space, ?

Command 4-digits Parameter 4-digits Return code

Parameter

Input the parameter values, aligning left, and fi ll with space(s) for the remainder. (Be sure that four values are input for the parameter.)

When the input parameter is not correct, “ERR” returns. (Refer to “Response code format”.)

0

0 0 0 9

a 3 0

1 0 0

0 0 5 5

When “?” is input for some commands, the present setting value responds.

?

? ? ?

?

Response code format

Normal response Problem response (communication error or incorrect command)

OK

Return code (0DH)

E R R

Return code (0DH)

41