DUPLEX elevator call logic - how does THAT work?

Explained - how a Otis Elevator call system works, between TWO elevators. Easy with computer, but NOT when you're using a 1970s relay system!
SEE PART 1 here:
   • Elevator call logic, the old OTIS system  
TO SEE OTIS MACHINERY IN ACTION, this video has it all: (and took 2 MONTHS to edit!!)
   • Very detailed OTIS LIFT MOTOR ROOM vi...  

Other links features in the video:
EXPRESS LIFTS LOGIC EXPERIMENTS:
   • (3/4) PROBABLY THE BEST 'elevator rel...  
EXPRESS DMR VIDEO (18 floors):
   • (Now extinct) FASCINATING 1970's DMR ...  
OLD OTIS LIFT MOTOR ROOM:
   • 1971 Otis elevators Part 2 - The moto...  
For the all mechanical Bennie motor room:
   • All-mechanical BENNIE LIFT MOTOR ROOM...  
PROB THE BEST LIFT LOGIC EXPERIENTS vid:
   • (3/4) PROBABLY THE BEST 'elevator rel...  
SCHINDLER HYDRAULIC MOTOR ROOM WITH RELAYS:
   • Old schindler hydraulic lift - i'm lo...  
..........
  / mrmattandmrchay-110000184094857  
Please give us a 'like', thank you! :)
..........
MERCHANDISE AVAILABLE! Please support our channel by getting Siren and Lift merch from: http://www.mrmattandmrchay.com
..........
IMPORTANT NOTICE ABOUT SAFETY AND YOUTUBE:
This is a RESPONSIBLE and RESPECTABLE channel.
My channel does not promote or glamourise dangerous activities like lift surfing.
For further info, please see these links:
https://elevatorcommunity.fandom.com/...
  / 831498013530296  
..........
THE MRMATTANDMRCHAY CHANNEL, established 2008:
I'm passionate about uploading quality and interesting videos for YOU, my audience.
What is my channel about? "Old lift machinery made interesting", old air-raid sirens, prehistoric alarm equipment. If "I" don't find it interesting ...then IT DOESN'T GET UPLOADED!
I always spend a lot of time editing my videos with animations, video in-sync with music and voice overs to make them this way.
My moto - "Quality NOT Quantity" - spending a month editing a video is not a rarity!
But without you, I'm nothing here. Thank you so much for watching.
...mrmattandmrchay is me (Matt) and my son Chay.

THANK YOU very much for watching :)

#### LIFT SIM #####
   • Introducing LiftSim (now works in Win...  
This is LIFTSIM. A computer program I wrote back in the early 1990s in QBasic. I'd love to update this to a modern platform, but I don't really get the time to do so.
LiftSim focuses on logic and functionality rather than graphics. 4 Lifts, up to 250 people, up to 35 floors with Express Zones allowed, and then liftsim does the rest!

The way the call logic works in LiftSim:
1) Call allocation. When a lift goes inactive, it is assigned a floor group. After a settable inactivity time, the lift will sleep and be taken out of the call logic system until required.
2) Time to destination. Before being allocated a call, each lift is given a 'score'. +1 for each floor to travel, +10 for each stop. The lift with the lowest score gets given the call - which may not 'necessarily' be an inactive lift.
3) Return to ground. Peak periods, the lift that reaches the last up call soonest gets given a priority 'return to ground', so that a lift is available to start collecting up calls. This helps distribute lifts so that don't all gather up on the same floors.
4) Using the score system, car calls are also considered, so that neighbouring lifts do not stop to collect Landing Calls when a different lift is due to stop there anyway.
5) And it goes on! After watching the way the lifts respond, there are also all kinds of tweaks to get the lifts working more efficently.

Please bear in mind this was originally QBASIC from the 1980s. It does still work in Windows using an emulator called QB64, but the last time I tested it was Windows XP. I've no idea if it still works in W10.
LIFTSIM download (for those who want to give it a go!)
http://s000.tinyupload.com/?file_id=5...

LIFTSIM setup tutorials, Parts 1 to 4:
   • Видео  
   • Видео  
   • Видео  
   • Видео  

Please note, I'm offering very little support for LiftSim as it's essentially a DOS(QBasic) program running within Windows.
If you get it to work, great! If not (especially the sound) then...not!
############