Hitachi CP-X2521WN Communication settings, Protocol, Header code, Packet, Data size, CRC flag

RS-232C Communication (continued)

Communication settings

1.Protocol

19200bps,8N1

2.Command format ("h" shows hexadecimal)

Byte Number

0

1

2

3

4

5

6

7

8

9

10

11

12

Command

Header

Data

Header

Data

CRC

Action

Type

Setting

code

Packet

size

ag

code

Action

L

H

L

H

L

H

L

H

L

H

L

H

<SET>Change setting to desired value [(cL)(cH)] by [(eL)(eH)].

<GET>Read projector internal setup value [(bL) (bH)] .

<INCREMENT> Increment setup value [(bL)(bH)] by 1.

<DECREMENT> Decrement setup value [(bL)(bH)] by 1.

<EXECUTE> Run a command [(bL)(bH)].

BEh

EFh

03h

		(aL)	(aH)	01h	00h	(bL)	(bH)	(cL)	(cH)
		(aL)	(aH)	02h	00h	(bL)	(bH)	00h	00h
06h	00h
		(aL)	(aH)	04h	00h	(bL)	(bH)	00h	00h
		(aL)	(aH)	05h	00h	(bL)	(bH)	00h	00h
		(aL)	(aH)	06h	00h	(bL)	(bH)	00h	00h

[Header code], [Packet], [Data size]

Set [BEh, EFh, 03h, 06h, 00h] to byte number 0 ~ 4.

[CRC flag]

For byte number 5, 6, refer to RS-232C Communication / Network command table (17).

[Action]

Set functional code to byte number 7, 8.

<SET> = [01h, 00h], <GET> = [02h, 00h], <INCREMENT> = [04h, 00h] <DECREMENT> = [05h, 00h], <EXECUTE> = [06h, 00h]

Refer to the command table above.

[Type], [Setting code]

For byte number 9 ～ 12, refer to RS-232C Communication / Network command table (17).

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