VIEWSONIC ViewBoard 55" UHD 4K Interactive Display - Manual (Page 118)

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2. Get Time example
ƐƐƵŵĞĚƚŚĞĐƵƌƌĞŶƚƟŵĞŽĨĚŝƐƉůĂLJηϬϭĂƐďĞůŽǁ͗
Time: 16:27:59
Send: 0x 38 30 31 67 33 48 30 30 0D (Get Time:Hour)
Reply: 0x 38 30 31 72 33 48 31 36 0D (“H16”)
Send: 0x 38 30 31 67 33 4D 30 30 0D (Get Time:Min)
Reply: 0x 38 30 31 72 33 4D 32 37 0D (“M27”)
Send: 0x 38 30 31 67 33 53 30 30 0D (Get Time:Sec)
Reply: 0x 38 30 31 72 33 53 35 39 0D (“S59”)
3. Get RS232 Version example
Assumed the version is 3.0.1
Send: 0x 38 30 31 67 36 30 30 30 0D (Get RS232 version)
Reply: 0x 38 30 31 72 36 33 30 31 0D (“301”)