Francis Searchlights Voyager 2 User Instruction & Installation Manual page 29

will increment as the lamp moves from centre. The least significant byte com-
prises the lower 7 bits of the value with the most significant bit set to zero.
As an example, a value of 0x0A followed by 0x08 would indicate an angle 1
degree up of centre. 0x0A = 10 but resolution is 0.1 degrees so divide integer
value by 10 to give 1.0 degrees. A value of 0x64 followed by 0x00 would indi-
cate a value of 10 degrees down of centre.
DATA_LAMP_ON (0x1A)
This is a four-byte command (Sync, Lamp address, command, CRC). The
lamp will switch on when this code is received.
DATA_LAMP_OFF (0x1B)
This is a four-byte command (Sync, Lamp address, command, CRC). The
lamp will switch off when this code is received.
DATA_RECORD (0x0D)
This is a four-byte command (Sync, Lamp address, command, CRC). The
lamp will start recording motion and lamp on / off data when this code is re-
ceived.
DATA_PLAY (0x0E)
This is a four-byte command (Sync, Lamp address, command, CRC). The
lamp will start playing back a previously recorded sequence when this code is
received.
DATA_REQUEST_LAMP_STATUS (0x1E)
This is a four-byte command (Sync, Lamp address, command, CRC). When
the interface receives this command, there is a 10mS delay then the interface
will switch to transmit and send 13 bytes as detailed below.
1. Sync (FF)
2. Lamp Address with bit 7 set - range 0x90-0xA8
3. Pan Position LSB (Same format as pan position command above)
4. Pan Position MSB
5. Tilt Position LSB (Same format as tilt position command above)
6. Tilt Position MSB
7. Lamp Status
8. Focus position - Value between 0 and 100 - finest focus at value 50.
9. Fault Status 1
Bit 0 - Lamp on
Bit 1 - Pan Limit reached
Bit 2 - Tilt Limit reached
Bit 3 - Lamp Recording
Bit 4 - Lamp Playing
Bit 5 - Lamp Overheated (not currently implemented)
Bit 6 - Lamp moving to home
Bit 0 - Pan motor current high.
Bit 1 - Tilt motor current high.
Bit 2 - Focus motor current high.
Bit 3 - FBUS +24V out current high.
Bit 4 - Heater current high.