Protocol 2 : Without Id; Set Function Listing - ViewSonic CD4233 Hardware Interface Spec And Software Protocols

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
Byte Count 1 Byte
Bytes order 1
All Set-Function from PC to Monitor (ASCII)
Name Length
Byte Count 5
Bytes order 1
Example: Set Mute-ON command (ASCII)
Name Length
Byte Count 5
Bytes order 1
Example: Set Mute-OFF command (ASCII)
Name Length
Byte Count 5
Bytes order 1
Example: Set Tint to 50 command (ASCII)
Name Length
Byte Count 5
Bytes order 1
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
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May 28, 2007
Commercial Display RS-232 Protocol
Command Value1
1 Byte 1 Byte
2 3
Command Value1
1 Byte 1 Byte
2 3
Command Value1
6 0
2 3
Command Value1
6 0
2 3
Command Value1
„ 0
2 3
10 / 16
Value2 Value3 CR
1 Byte 1 Byte 1 Byte
4 5 6
Value2 Value3 CR
1 Byte 1 Byte 00D
4 5 6
Value2 Value3 CR
0 0 00D
4 5 6
Value2 Value3 CR
0 1 00D
4 5 6
Value2 Value3 CR
5 0 00D
4 5 6
Commercial Display RS-232 Protocol
Revision 1.x