Derby Timer Serial Protocol

Reset

Command: 'R':
Reponse: "RESET"

 

Auto Reset
Command to set Auto Reset time:  'AR<seconds>#'
Command to cancel Auto Reset: 'AC'


Force Race End

Command: 'F'
Reponse:  Cars not across finish line are given 0.0 (did not finish) as lap time, and results are sent as normal.


Mask Lane

Command: 'M<lane number>#'


Clear Lane Masks
Command: ‘C'
Response: "OK"


Rescan for auto detect lane count

Command: 'S'
Response:  <lane count>


Gate Check

Command: 'G'
Response if Gate is UP: "U"
Response if Gate is Down: "D"
Response if Gate is Not Detected: "?"


Countdown Timer

Command: 'TM<minutes>#' or ‘TS<seconds>#”


Timer Info

Command 'V'


Phase Delay

Timer display can alternate between lap time and first place differential if in phase alternating mode (command 'PA').  How long between switching between displays is the phase delay.

Command: ‘PD<seconds>#'
Response: "Phase Delay: <seconds>s”

Phase Mode

Timer display can alternate between lap time and first place differential if in phase alternating mode (command 'PA').  How long between switching between displays is the phase delay.

Command to alternative between lap time and 1st place differential: 'PA'
Command, display lap time only: ‘PT'
Command, display first place differential only: ‘PF'
Response: "OK”

Reverse Lane Order

Command for Left to Right: 'LF':
Response:  "FORWARD LANES"

Command for Right to Left: 'LR':
Response: "REVERSE LANES"