Dukane 8943 参考指南

7

RS-232C Communication

RS-3C Communication

6

7

8

9

3

4

5

 

  

 

 

6

7

8

9

3

4

5

 

 CONTROL port 

RS-3C cable (Cross) 

RS-3C port 

  of the projector 

 

of the computer

 

- () 

() CD 

 

RD () 

() RD 

 

TD (3) 

(3) TD 

 

- (4) 

(4) DTR 

 

GND (5) 

(5) GND 

 

- (6) 

(6) DSR 

 

RTS (7) 

(7) RTS 

 

CTS (8) 

(8) DTS 

 

- (9) 

(9) RI

 

Connecting the cable

. 

Turn off the projector and the computer. 

. 

Connect  the  CONTROL  port  of  the  projector  with  a  RS-3C  port  of 
the  computer  by  a  RS-3C  cable  (cross).  Use  the  cable  that  fulfills  the 

specification shown in the previous page.

3. 

Turn the computer on, and after the computer has started up turn the 
projector on.

Communications setting

900bps, 8N
1 . Protocol 
Consist of header (7 bytes) + command data (6 bytes).
2 . Header 
BE + EF + 03 + 06 + 00 + CRC_low + CRC_high

CRC_low : Lower byte of CRC flag for command data

CRC_high : Upper byte of CRC flag for command data
3 . Command data 
Command data chart

byte_0

byte_

byte_

byte_3

byte_4

byte_5

Action

Type

Setting code

low

high

low

high

low

high

Action (byte_0 - )

Action

Classification

Content

SET

Change setting to desired value.

GET

Read projector internal setup value.

4

INCREMENT

Increment setup value by .

5

DECREMENT

Decrement setup value by .

6

EXECUTE

Run a command.

8943 & 8944