PDPRP Technical LBC Bench Switch Check

In the LBC routine, check_tel(), I decide if it is time to switch benches. Here is how it works:

Are we in dwell mode?
- Yes
  - Is dwell over?
    - Yes
      - Turn on light-released signal
      - Set timer for next cycle
      - Continue
    - No
      - Return saying not time to switch
- No
  - Continue
Was light already released?
- Yes
  - Continue
- No
  - Is light now released?
    - Yes
      - Continue
    - No
      - Are we timed out waiting for DWL?
        
        Yes - display error and let user decide fate
        No - return saying not time to switch
Check each bench in list to see if its time has arrived.
Has a bench's time arrived?
- Yes
  - Is bench ready for light?
    - Yes
      - Return that bench as the one to go to next
    - No
      - Try next bench
- No
  - Return not time to switch