Vaddio Canon VC-C50i Programmers - Manual (Page 113)

112
13.50 Zoom Ratio Request
Camera Control Command Type 1
Function To return zoom ratio.
Command 00ABh
Parameter None
Length 2
byte Status
Value 1Ah (Fixed)
Reference •To come out 1Ah and return it equal to zoom ratio 26 times.
Format of Control Code
d0 d1 d2 d3 d4 d5
Header Device Num Command End mark
FFh 30h 3Xh 00h ABh EFh
Answer Format
In case of No Error
d0 d1 d2 d3 d4 d5 d6 d7
Header Device Num Error Code Zoom ratio End mark
FEh 30h 3Xh 30h 30h s0h s1h EFh
⇓
Zoom ratio indicates in hexadecimal 2 figures and its ASCII code is Status value.
Example: s0
s1
16 ⇒ 10h ⇒ 31h 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.