Operating instructions

BYTE DATA DESCRIPTION
1 F8H Sync character
2 Address in hex Camera address (01H - DFH)
3 “v” Lower case “v”
4
Z2 (MS nibble) 30H
- 3FH
Position data is 30H ored with data nibble
Z11, Z10, Z09, Z08 of zoom lens position data.
5
Z1
30H - 3FH
Position data is 30H ored with data nibble
Z07, Z06, Z05, Z04 of zoom lens position data.
6
Z0 (LS nibble)
30H - 3FH
Position data is 30H ored with data nibble
Z03, Z02, Z01, Z00 of zoom lens position data.
7
F2 (MS nibble)
30H - 3FH
Position data is 30H ored with data nibble
F11, F10, F09, F08 of lens focus position data.
8
F1
30H - 3FH
Position data is 30H ored with data nibble
F07, F06, F05, F04 of lens focus position data.
9
F0 (LS nibble)
30H - 3FH
Position data is 30H ored with data nibble
F03, F02, F01, F00 of lens focus position data.
10
Terminator and
Checksum
80H - 8FH Most signicant nibble is always 8. Least signicant (LS) nibble is the XOR of all
previous bytes (LS nibble only) except for leading autobaud character F8H.
3.8 Lens Position Feedback Commands
FUNCTION Byte #3 Byte #4 DESCRIPTION
REQUEST POSITION “V”
“?” Get position. ASCII character “V” followed by the “?”
character.
The response to this command is shown in the table below:
BYTE DATA DESCRIPTION
1 F8H Sync character
2 Address in hex Camera address (01H - DFH)
3 “V” Upper case “V”
4
Z2 (MS nibble) 30H
- 3FH
Position data is 30H ored with data nibble
Z11, Z10, Z09, Z08 of zoom lens position data.
5
Z1
30H - 3FH
Position data is 30H ored with data nibble
Z07, Z06, Z05, Z04 of zoom lens position data.