Miangratten

Beers all around. Cheers!

Actually, no! The satisfaction of having the puzzle complete and the journey taken to get there is enough. Did you want a prize? It is now past 3am here and I am shattered so I'll bid you 'goodnight'. Thanks again.

We weren't far off! That's fabulous. Mickey you are a hero. Big thanks to; b_carlton for his/her patient explanations and coaching, Buckaroo for his/her recommendation, Michael Lloyd for making an old lady chortle with his "less chicks and bar time and more class time" comment, and of course you, Mickey. I really appreciate your assistance. Thanks all; I have learned a lot in one day. Have a great Sunday.

Hum. Now I get B3:0 is 539 and B3:1 is 675. That is incorrect. I can see the finish line though...

Wow, Mickey! You are amazing! I see some different numbers to you in rungs 2 and 6... rung 2 is -]/[- B3:0/8 rung 6 is -( )- B3:0/1 and -( )- B3:1/2 That changes things a bit doesn't it? A real PLC eh? I feel rather honoured Edited for a typo

Forgive me, b_carlton. The bits on my -] [- and -]/[- symbols are not only 1s and 0s. They are 4s, 7s, 8s and 0s. What am I missing?

I make the bit number on the far right of rung four as a 3. The ones on the left are both 8. ETA Hard for these old eyes to read too!!

Hi Mickey, I didn't spot a typo but I'm not surprised. Yes, I can see I typed in B3:0/7 instead of b3:1/7. I'm not surprised. The screenshot in post 13 was my foolish waste of a few hours setting up a programme in some software I knew nothing about... I thought there'd be a magic 'run' button that would tell me the value of B3:0 and B3:1. Much egg on my face?! The image in post 1 is from the puzzle and is correct. I would post the file you refer to if I knew what it was.

I like that you feel it is cheating! You have offered so much and I feel so dense. I will work through the rungs again (my first try has resulted in all '0's!), and use the dec/bin function on the calculator. Thank you for your help. You must think I'm a complete nutcase.

Thank you for the link. Ho hum. What a mind twist on a hot Saturday.

I'm trying to use the software to work through the rungs for me. I am looking for two 3-digit numbers and am hoping there is a 'run' button. I realise this is not a maths equation but honestly, I can't figure out where these numbers are going to come from!

Hello Me again; I'm still battling it out with this one. I have built this; Is there a kind soul who would explain what I should do next?

Thank you, both. You have been more than helpful and I appreciate the effort you have gone to to spell things out.

Hi, before I stumbled on this puzzle I had never heard of PLCs or ladder logic at all and after this puzzle will probably never need it again. I teach young children so my background is very different to yours I should think! I am simply looking for the solution. I am trying to understand the puzzle but so far am struggling.

Links? I meant hints.