Rs232 Command Table - ViewSonic EP4220 User Manual

4.2.

RS232 Command Table

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.
Communication Setting
- Baud Rate Select: 9600bps (fixed)
- Data bits: 8bits (fixed)
- Parity: None (fixed)
- Stop Bits: 1 (fixed)
The Set-Function packet format consists of 5 bytes.
Name Length
Byte Count 1 Byte
Bytes order 1
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
EP4220 set command table
Set Function Length
Power
Input Select
Contrast
Brightness
Sharpness
Color
Volume
Mute
Restore default
EP4220 get command table
Get Function Length
Get power status
Command
1 Byte
2
Command Code
(Hex)
5 21
5 22
5 23
5 24
5 25
5 26
5 35
5 36
5 7E
Command Code
(Hex)
5 6C
Value1 Value2
1 Byte 1 Byte
3 4
Value Range
(Three ASCII bytes)
000 : STBY
001 : ON
004 : HDMI
006 : PC
008 : USB
000 ~ 100
000 ~ 100
000 ~ 100
000 ~ 100
000 ~ 100
900:Volume down(-1)
901:Volume up(+1)
000: OFF
001: ON (mute)
000
Value Range
(Three ASCII bytes)
000 : STBY
001 : ON
12
Value3 CR
1 Byte 1 Byte
5 6
Comments
Controlled power status:
ON or Standby
Rests to factory
setting
Comments
Gets the status of the power:
000 = ePoster is in standby
001 = ePoster is ON