ViewSonic CD4233 - 4 Protocol 2: Without ID; Set Function Listing

Commercial Display RS-232 Protocol
Revision 1.x
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May 28, 2007 10 / 16 Commercial Display RS-232 Protocol
4 Protocol 2 : without ID
4.1 Set function listing
The PC can control the LCD Monitor for specific actions. The Set-Function command allows you to
control the LCD monitor behavior in a remote sit through the RS232 port. The Set-Function packet
format consists of 5 bytes. Note that the “Value” byte is always = 00.
Set-Function description:
Length:
Total bytes of message = 5 ASCII (35H) excluding “CR”
Command:
Function command code: One byte ASCII code
Value[1~3]:
Three bytes ASCII that defines the value
Set-Function format:
Name
Length
Command
Value1
Value2
Value3
CR
Byte Count
1 Byte
1 Byte
1 Byte
1 Byte
1 Byte
1 Byte
Bytes order
1
2
3
4
5
6
All Set-Function from PC to Monitor (ASCII)
Name
Length
Command
Value1
Value2
Value3
CR
Byte Count
5
1 Byte
1 Byte
1 Byte
1 Byte
00D
Bytes order
1
2
3
4
5
6
Example: Set Mute-ON command (ASCII)
Name
Length
Command
Value1
Value2
Value3
CR
Byte Count
5
6
0
0
0
00D
Bytes order
1
2
3
4
5
6
Example: Set Mute-OFF command (ASCII)
Name
Length
Command
Value1
Value2
Value3
CR
Byte Count
5
6
0
0
1
00D
Bytes order
1
2
3
4
5
6
Example: Set Tint to 50 command (ASCII)
Name
Length
Command
Value1
Value2
Value3
CR
Byte Count
5
„
0
5
0
00D
Bytes order
1
2
3
4
5
6
LCD Monitor will send “+” (02Bh) and “CR” bytes to PC after receiving a valid command.
LCD Monitor will send “-” (02Dh) and “CR” bytes to PC if the command is not valid.
Value Range:
Three bytes ASCII value range
Command Code:
Function command code in ASCII
CD5233/CD4233 set command table