Vaddio Canon VC-C50i Programmers - Manual (Page 107)

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13.44 White Balance Value Request
Camera Control Command Type 1
Function To return value of present white balance.
Command 00A7h
Length 1 byte Parameter
Value 5h
Length 2
byte Status
Range 00h (enhanced Red) ~ FFh (enhanced Blue)
Reference •To return 80h at the moment of executing command except white balance
manual mode.
Format of Control Code
d0 d1 d2 d3 d4 d5 d6
Header Device Num Command Parameter End mark
FFh 30h 3Xh 00h A7h 35h EFh
Answer Format
In case of No Error
d0 d1 d2 d3 d4 d5 d6 d7
Header Device Num Error Code Manual Value End mark
FEh 30h 3Xh 30h 30h s0 s1 EFh
⇓
Manual value indicates in hexadecimal 2 figures and its ASCII code is Status value.
Example: s0
s1
128 ⇒ 80h ⇒ 38h 30h
In case of Error
d0 d1 d2 d3 d4 d5
Header Device Num Error Code End mark
FEh 30h 3Xh e0 e1 EFh
⇓
Error Flag indicates in 2 figures hexadecimal and returns ASCII code value.
Example: e0 e1
In case of Busy :
00010000B ⇒ 10h ⇒ 31h 30h
In case of Mode Error : 10010000B ⇒ 90h ⇒ 39h 30h
Condition of Error flag to be set
Busy •In process of camera initializing operation by Camera Reset
command, etc.
•In case of executing Preset Move command.
Mode Error •Not in status of Camera ON.
•Not in status of Host Control Mode.
•In the case of not inserted Ir cut-off filter.