VIEWSONIC ViewBoard 55" UHD 4K Interactive Display - Manual (Page 106)

106
Protocol
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dŚĞWĐĂŶĐŽŶƚƌŽůƚŚĞŝƐƉůĂLJĨŽƌƐƉĞĐŝĮĐĂĐƟŽŶƐ͘dŚĞ^ĞƚͲ&ƵŶĐƟŽŶĐŽŵŵĂŶĚ
allows you to control the Display behavior at a remote site through the RS-232 port.
dŚĞ^ĞƚͲ&ƵŶĐƟŽŶƉĂĐŬĞƚĨŽƌŵĂƚĐŽŶƐŝƐƚƐŽĨϵďLJƚĞƐ͘
^ĞƚͲ&ƵŶĐƟŽŶĞƐĐƌŝƉƟŽŶ͗
Length: Total Byte of Message excluding “CR”
LFD ID Identification for each of Display (01~98; default is 01)
ID “99” means to apply the set command for all connected
displays. Under such circumstances, only ID#1 display has to
reply.
The LFD ID can be set via the OSD menu for each Display.
Command Type Identify command type,
“s” (0x73h): Set Command
“+” (0x2Bh): 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;ŽŵŵĂŶĚdLJƉĞс“Ɛ͟Ϳ
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;ŽŵŵĂŶĚdLJƉĞс͞н͟Žƌ͞Ͳ͟Ϳ
Name Length ID Command Type CR
Byte
Count
1 Byte 2 Byte 1 Byte 1 Byte
Bytes
order
1 2~3 4 5
EKd͗ഩ When PC applies command to all displays (ID=99), only the #1 set needs
to reply by the name of ID=1.