Please Help Urgent!

CAN ANYONE UNDERSTAND THIS COMMAND, I DO BUT JUST WANT TO SEE IF OTHERS CAN SO I CAN TALK ABOUT IT AND ASK QUESTIONS,HERE GOES NOTHIN (U MIGHT WANT TO DRAW THE LADDER DIAGRAM):
LDI 402

OUT 450

K 10

LD 450

OUT 451

K 10

LD 450

OR 474

ANI 451

OUT 474

LD 406

OR 475

ANI 411

OUT 475

LD 474

OR 475

OUT 431

END

What PLC and what software you use?
This looks a lot like Mitsubishi but the device types are missing (X, Y, T, M, ...)
I inserted them the best I could and it turns out like five rungs:


LDI M402 OUT T450 K10 (if not M402 run timer T450 with preset 10 or 1.0 sec.)

LD T450 OUT T451 K10 (if T450 run another timer etc.)

LD T450 OR M474 ANI M451 OUT M474

LD M406 OR M475 ANI M411 OUT M475

LD M474 OR M475 OUT M431

But before I waste my breath (clicks) on reply, maybe it's time for you to provide SOME info, don't you think?

Ye Sits The Mitsubishi F Series, What Is Suppose To Happen Is That As X402 Is Normally Closed The Lamp Y431 Will Come On In 10 Seconds Then Go Off Again 10 Seconds Later. But When Push Button X406 Is Pressed The Automatic Way Of Outputting Y431 Is Over Ridden And Y431 Will Come On And Stay On (not Going Off, The Reset Button 411 Turns Off The Output Y431 When Switched. Hope This Helps.

what is reset button 411? is it X411 or M411 or B411 or L411 or...?
please post code with the device types and some comments.
hope this helps.

Ok, let's see. After scratching my head over this
one, i guess this is what you wanted.
Please check it out.

      X402                  T450 K100

-----|\|----------------------( )



      T450                  T451 K100

-----| |----------------------( )



     X406    T450  T451       Y431

-----|\|------| |---|\|--+-----( )

                         |

    X406        X411     |

-----| |----+----|\|-----+

            |

    Y431    |

-----| |----+

I used to have a brown book for all the F1 addresses, but alas - I think it has been filed under 'rubbish'

So I tried wracking my brain, but as you get older the FIFO stack in there gets shorter and they must have gone into the overflow stack by now.

I do seem to remember though that the addresses are one contiguous lump (lump?) without prefix of X or M etc. Or at least if you are using a 'list' only handheld programmer.

So you have to have the address book for the F1 to have a chance otherwise all you can know are the inputs and outputs by looking at the actual PLC and they start at something like 430 431 etc

Goody is correct with regard to absence of prefixes X, Y, M, T, C, etc on F1 plc's. 400 to 427 are inputs, 430 to 447 are outputs, 450 and 451 are timers, but I havn't got a clue what 474 and 475 are. (I had a brown book too and don't know it's current whereabouts).

474=m474 & 475=m475