Nec MultiSync E705 SST (ShadowSense) [11/104] Header message check code delimiter

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4.3 Check code

Check code is the Block Check Code (BCC) between the Header and the End of Message except SOH.

n+1

= D

XOR D

XOR ,,, D

XOR: Exclusive OR

Following is an example of a Check code (BCC) calculation.

Check code (BCC) D

= D

xor D

xor … xor D

xor D

= 30h xor 41h xor 30h xor 45h xor 30h xor 41h

xor 02h xor 30h xor 30h xor 31h xor 30h xor 30h

xor 30h xor 36h xor 34h xor 03h

= 77h

Header

Message

Check code

Delimiter

SOH D

Reserved D

Destination D

Source D

Type D

Length(H) D

Length(L) D

STX D

Data D

| |

ETX D

Check code D

n+1

P P P P P P P P

Header

Message

Check

code

(BCC)

Delimiter

SOH

Reserved

Destination

Address

Source

Address

Message

type

Message length

STX

OP code

page

OP code

Set Value

ETX

30 41 30 45 30 41

Содержание

External control nec lcd monitor 1
Rev g2e index 1
I application 3
Ii preparation 2 connectors and wiring 4
Lan control 4
Rs 232c remote control 4
Communication timing 5
Iii communication specification 3 communication parameter 5
Lan control 5
Rs 232c remote control 5
Command 6
Command reply 6
Communication format 6
Get parameter 6
Get parameter reply 6
Monitor controller 6
Save current setting command 6
Save current setting command reply 6
Set parameter 6
Set parameter reply 6
Header block format fixed length 7
Header message check code delimiter 7
Header message check code delimiter 9
Message block format 9
Address 11
Check code 11
Delimiter 11
Header message check code bcc 11
Header message check code delimiter 11
Message 11
Message length stx op code 11
Op code set value etx 11
Soh reserved destination 11
Source address 11
Delimiter 12
Header message check code delimiter 12
Get current parameter from a monitor 13
Message type 13
Get parameter reply 14
Set parameter 16
Set parameter reply 17
Commands 18
Save current settings 18
Get timing report and timing reply 19
Null message 20
How to change the backlight setting 21
Iv control commands 21
Typical procedure example 21
How to read the measurement value of the built in temperature sensors 24
Operation code op code table 27
Pictu re 27
Adjus t 28
Audi o 30
Schdu le 31
Multi display 33
Displ ay protection 34
Advan ced option1 35
Exter nal control 35
Advan ced option2 37
Carbo n footprint 38
Tempe rature sensor 38
Power control procedure 39
Power status read 39
Power control 41
Asset data read and write 43
Asset data read request and reply 43
Asset data write 45
Date time read 47
Date time read and write 47
Date time write 49
The controller requests the monitor to write date time 49
This command is used in order to write the setting of the date time 49
Schedule read 52
Schedule read and write 52
Following command also can be used for to keep backward compatibility in order to 55
Read the setting of the schedule 55
Schedule write 57
Following command also can be used for to keep backward compatibility in order to 62
Write the setting of the schedule 62
Self diagnosis 66
Self diagnosis status read 66
Serial no model name read 68
Serial no read 68
Model name read 70
Security lock 72
Security lock control 72
Direct tv chanel read reply 74
Direct tv chanel read write 74
Stx c 3 2 c majorch minorch etx 74
Direct tv chanel write reply 75
Stx c 3 2 d majorch minorch etx 75
Daylight saving read 76
Daylight saving read write 76
Daylight saving write 78
Firmware version 80
Firmware version read 80
Input name 82
Input name read 82
Input name write 84
Input name reset 86
Power save mode 88
Power save mode read 88
Power save mode write 90
Auto power save time read 92
Auto power save time write 93
Auto standby time read 95
Auto standby time write 96
Security enable 98
Security enable read 98
Security enable write 100
Lan mac address 102
Lan mac address read 102
All data are subject to change without notice 104

Nec MultiSync E705 SST (ShadowSense) [11/104] Header message check code delimiter

Содержание

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