VIEWSONIC ViewBoard 55" UHD 4K Interactive Display - Manual (Page 112)

112
'ĞƚͲ&ƵŶĐƟŽŶ>ŝƐƟŶŐ
dŚĞWĐĂŶŝŶƚĞƌƌŽŐĂƚĞƚŚĞ>&ĨŽƌƐƉĞĐŝĮĐŝŶĨŽƌŵĂƟŽŶ͘dŚĞ'ĞƚͲ&ƵŶĐƟŽŶƉĂĐŬĞƚ
ĨŽƌŵĂƚĐŽŶƐŝƐƚƐŽĨϵďLJƚĞƐǁŚŝĐŚŝƐƐŝŵŝůĂƌƚŽƚŚĞ^ĞƚͲ&ƵŶĐƟŽŶƉĂĐŬĞƚƐƚƌƵĐƚƵƌĞ͘
Note that the “Value” byte is always = 000.
'ĞƚͲ&ƵŶĐƟŽŶĞƐĐƌŝƉƟŽŶ͗
Length: Total Byte of Message excluding “CR”.
TV/DS ID Identification for each of TV/DS (01~98; default is 01).
Command Type Identify command type,
“g” (0x67h) : Get Command
“r” (0x72h) : 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
'ĞƚͲ&ƵŶĐƟŽŶ&ŽƌŵĂƚ
^ĞŶĚ͗;ŽŵŵĂŶĚdLJƉĞс͞Ő͟Ϳ
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
ZĞƉůLJ͗;ŽŵŵĂŶĚdLJƉĞс͞ƌ͟Žƌ͞Ͳ͟Ϳ
If the Command is valid, Command Type = “r”
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
/ĨƚŚĞŽŵŵĂŶĚŝƐEKdǀĂůŝĚ͕ŽŵŵĂŶĚdLJƉĞс͞Ͳ͟
Name Length ID Command Type CR
Byte
Count
1 Byte 2 Byte 1 Byte 1 Byte
Bytes
order 1 2~3 4 5