Vaddio Canon VC-C50i Programmers - Manual (Page 164)

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Format of Control Code
d0 d1 d2 d3 d4 d5 d6 d7
Header Device Num Command Parameter End mark
FFh 30h 3Xh 00h 91h p0 p1 EFh
⇓
Status of display indication indicates in hexadecimal 2 figures and returns its
ASCII code as value.
Example: Display Indication ON (All Display ON)
p0 p1
01h ⇒ 30h 31h
Date Indication ON2 (Indication Format 2) p0 p1
09h ⇒ 30h 39h
Answer Format
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 No Error :
00000000B ⇒ 00h ⇒ 30h 30h
In case of Parameter Error : 01010000B ⇒ 50h ⇒ 35h 30h
In case of Mode Error : 10010000B ⇒ 90h ⇒ 39h 30h
Condition of Error flag to be set
Parameter Error •In case of assigned parameter besides 00h~09h.
Mode Error
•Not in status of Camera ON.
•Not in status of Host Control Mode.