ViewSonic CDE3205-EP - Инструкция по эксплуатации - Страница 33

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10.3.  Protocol

10.3.1. Set-Function Listing

The PC can control the TV/DS for specific actions. The Set-Function command allows you to control the TV/

DS behavior in a remote site through the RS232 port. The Set-Function packet format consists of 9 bytes.

Set-Function description:
Length:

Total Byte of Message excluding “CR”.

TV/DS ID

 Identification for each of TV/DS (01~98; default is 01) 

If we want to set all TV/DS settings, use the TV/DS ID “

99

”, and it will not have 

Reply

command on this function. 

The TV/DS ID can be set via the OSD menu for each TV/DS set.

Command Type

   Identify command type,  

“s” (0x73h) : Set Command 

“+” (0x2Bh) : Valid command Reply 

“-“ (0x2Dh) : Invalid command Reply

Command:

Function command code: One byte ASCII code.

Value[1~3]: 

Three bytes ASCII that defines the value.

CR 

0x0D

Set-Function format 
Send: (Command Type=”s”)

Name 

Length

ID

Command 

Type

Command Value1

Value2

Value3

CR

Byte Count

1 Byte

2 Byte

1 Byte

1 Byte

1 Byte

1 Byte

1 Byte

1 Byte

Bytes order

1

2~3

4

5

6

7

8

9

NOTE

:    For VT2405LED-1 and VT3205LED, the set “Power on” command is the exception 

Reply: (Command Type=”+” or “-”)

Name 

Length

ID

Command 

Type

CR

Byte Count

1 Byte

2 Byte

1 Byte

1 Byte

Bytes order

1

2~3

4

5

NOTE

:    

1.   The reply for “Power on” command is the exception for VT2405LED-1 and VT3205LED.  

It’s 0x322B0D ( 2+<CR>).

2.  When PC applies command to all displays (ID=99), only the #1 set needs to reply by the name of ID=1. 

Example1: Set Brightness as 76 for TV-02 and this command is valid
Send (Hex Format) 

Name 

Length

ID

Command 

Type

Command Value1

Value2

Value3

CR

Hex 

0x38

0x30

0x32

0x73

0x24

0x30

0x37

0x36

0x0D

Reply (Hex Format) 

Name 

Length

ID

Command 

Type

CR

Hex 

0x34

0x30

0x32

0x2B

0x0D