Newbie update and a question or two

caffeinencsu

Member
Join Date
Nov 2003
Posts
3
I finaly got a working PLC
waaaaaaaaaaaahhhhhhhhhhhhhooooooooooooooooooooo

it was broken, and then on the power up the next it arched, and blew it up, hehehehehehehehehehehe

but I finally have a real live working plc


my question is, I have a machine that sends paper down a ramp from a stack, my problem is I have to send one sheet down the ramp, then stop the next one with a stopper that pops up, send other one down on top of that sheet, drop the stopper and then start the process over again

I am having trouble restarting my counters, and good strategies.


When my counter hits the given value, it causes my relay to latch on, and i just want an impluse, is that possible?
 
As the problem seems to origin in the PLC program, it would be prudent of you to provide some details.
Such as PLC type and what code you have (attach your code as a zipped file).

First then you can hope for some help on your problem.
 
Perhaps using a counter to count a value of 1 is not that good.

There is many ways to have this done.

You could latch/unlatch a BIT.
You could ADD 1 to a register and only use the LSB as the memory BIT.
You could filp-flop a rung.
You could make a Start-Stop rung with the 2 papers being the triggers.
You could... you get my point.

I do not use counters for a preset of 1. Has given me too many troubles in the past.

My 2 cents.
 

Similar Topics

Good morning, I've had an inverter fail with firmware revision 5.002, the only spare is Rev 7.001, when updating the project with the new...
Replies
2
Views
1,247
Hello all, I'm a new member here. I've joined as I want to learn about PLC programming. I've got a few questions to begin with. To get me...
Replies
37
Views
4,426
Howdy folks. Been doing PLC programming for like 15 years now in LD and ST, but I'm trying to learn SFC now and have a kind of dumb question... I...
Replies
4
Views
1,344
Hello. New to Unity and had a couple quick questions. Can a Modicon M340 output to a small multiline LCD screen and not a full HMI?
Replies
4
Views
940
Hi. I'm learning AOI programming in RSLogix 5000. I created an AOI with several input and output parameters but when I choose the AOI in the main...
Replies
17
Views
3,101
Back
Top Bottom