3.2
Preset Command Messages
These commands control the position presets and some of the operational parameters of the pan/tilt platform. Byte number 1 is the start of message “F8”, byte
number 2 is the device address (default = 01), and byte number five is the message terminator byte. Note that preset 63 is reserved for another function; this preset
number is used in the commands “P””?” and “H””?”.
FUNCTION
Byte #3
Byte #4
DESCRIPTION
GOTO PRESET POSITION
Presets 1 – 64
“H”
01H – 40H
Goto preset position.
SAVE PRESET POSITION
Presets 1 – 64
“P”
01H – 40H
Store preset position.
CLEAR PRESET
Presets 1 – 63
“K”
01H – 40H
Clear preset position from memory.
CLEAR ALL PRESETS
“P”
“C”
Clears all presets from memory
AUTO TOUR ON
“L”
“A”
Enables the auto tour. Any pan left or pan right will turn off the auto tour.
PRESET STATUS REQUEST
“H”
“?”
Requests current preset status
3.3
Preset Response Message
FUNCTION
Byte #3
Byte #4
DESCRIPTION
PRESET INQUIRY RESPONSE
“H”
01H – 40H
“A”
“I”
“E”
Currently at preset 01H – 40H.
“A” Active, going to preset.
“I” Inactive, not at preset.
“E” Error, unable to go to preset.
3.4
Address Assignment Message**
This six-byte command sets the address of the dome. The address is in hexadecimal and is contained in bytes 4 and 5. If the address is set to FFH, then the unit
derives its address from the dipswitch. Byte number 1 is the start of message “F8”, byte number 2 is the device address (default = 01), and byte number six is the
message terminator byte.
FUNCTION
Byte #3
Byte #4
Byte #5
DESCRIPTION
ASSIGN UNIT ADDRESS
“A”
30H - 3FH
30H - 3FH
Set unit address. Byte 4 contains
the ms nibble of address and Byte
5 contains ls nibble of address.
Example: Set address of unit 1 to 53 (decimal) = 35H :
F8H 01H 41H 33H 35H 86H
3.5
Goto Position Message
This command causes the platform to go to an absolute position based on the motor encoders. The “GOTO POSITION” command is longer than the preceding command mes-
sages and is shown in its complete form in the following table:
BYTE
DATA
DESCRIPTION
1
F8H
Sync character
2
Address in hex
Camera address (01H - FFH)
3
“p”
Lower case “p”
4
A2 (MS nibble) 30H - 3FH
Position data is 30H ored with data nibble
A11, A10, A09, A08 of azimuth data.
5
A1
30H - 3FH
Position data is 30H ored with data nibble
A07, A06, A05, A04 of azimuth data.
6
A0 (LS nibble)
30H - 3FH
Position data is 30H ored with data nibble
A03, A02, A01, A00 of azimuth data.
