VIEWSONIC VS11857 User Manual
Page 56
ViewSonic
CD3200 vi
4
Get-Function Listing
The PC can interrogate the LCD Monitor for specific information. The Get-Function packet format consists of 5
bytes which is similar to the Set-Function packet structure. Note that the “Value” byte is always = 00.
Get-Function description:
Length:
Total bytes of message = 5 ASCII (35H), excluding “CR”
Command:
Get-Function command code: One byte ASCII code
Value[1~3]:
Always = 000
Get-Function format from PC to LCD (ASCII)
Name
Length Command Value1 Value2 Value3 CR
Byte Count
5
1 Byte
0
0
0
00D
Bytes order
1
2
3
4
5
6
Monitor shall response to Get-Function with the following packet format:
LCD Monitor response packet format:
Name
Length Value1 Value2 Value3 Value4
CR
Byte Count
5
1 Byte 1 Byte
1 Byte
1 Byte 00D
Bytes
order 1 2 3 4 5
6
Response packet (to Get-Function):
Length:
Total bytes of packet = 5 ASCII excluding “CR”
Exception: Total bytes for On-Hours = 6
Value[1-4]:
Four ASCII codes: Value range is from 0000 ~ 9999
Exception: Value[1-5] for On-Hours
LCD Monitor will send “+” (02Bh), “CR” bytes to PC after receiving a valid command
LCD Monitor will send “-” (02Dh), “CR” bytes to PC if the command is not valid