RSLogix 500 Question, 1st time poster

ktm

Member
Join Date
Oct 2007
Location
NC
Posts
15
Hi everyone,
I am new here and to PLC programming, Im just studying the basics.

I am doing a practice exercise on an AB SLC 5/01

The Goal:
1) Start the motor from either of 2 non momentary switches
2) Stop the motor by pushing a stop push button
3) must have a maintained circuit.
4) make a green pilot light light up when the motor is energized
make a red pilot light light up when the motor is de-energized


So far I am using 3 rungs for my ladder.

first rung
XIC I1:1/0 XIO I1:1/2 (motor) O0:2/0
XIC I1:1/1 branch 1
XIC B3:1/0 branch 2
XIC O0:2/0 branch 3
my 3 branches come back to the fist rung before the XIO

Rung 2
XIC O0:2/0 (green) O0:2/1
Rung 3
XIO O0:2/0 (red) O0:2/2

This is what I come up with so far. Im not sure if Im quite on the right track with my addressing, I was thinking I might refer my input address for the lights from a bit file.
Any advice or direction is appreciated for this newbie.

Thnx
 
Last edited:
KTM,

Welcome to a great site..

Next time you may want to post the code (the RSLogix) or a PDF, it makes it easier for people to vision it..

Do you have RSLogix on the PC you are using? if so you can also post screen shots
 
Try this...

Fill in the blanks, you could make this code several ways

Fill it in then let me know if I made any errors :)

tetst.gif
 
Welcome KTM

Your ladder would work as you discribed (good job :)), GIT's would be easier tho.

There is one minor error in you ladder and that's the XIC B3:1/0 branch 2 in your first rung. It doesn't do anything, so you can just remove it. It wouldn't cause any problems tho. It just doesn't do anything :)
 
nettogrisen and GIT,

Is it just me that thinks 1,2,and 3 are a little abigious when all are used in the same context?
ktm said:
1) Start the motor from either of 2 non momentary switches
2) Stop the motor by pushing a stop push button
3) must have a maintained circuit.
4) make a green pilot light light up when the motor is energized
make a red pilot light light up when the motor is de-energized
 
geniusintraining said:
Try this...

Fill in the blanks, you could make this code several ways

Fill it in then let me know if I made any errors :)

tetst.gif



Thanks for some excellant advice I didn't even know I could branch the OTE.

So if I address this like:

XIC I1:1/0 XIO I1:1/2 (motor) O0:2/0
(green) O0:2/0

XIC I1:1/1
XIO O0:2/0

XIO O0:2/0 (red) O0:2/1

That would satisfy the requirements.

Does anyone know of a simulator or practice emulator available so I can try different ideas at home.
My company shutdown and moved to mexico but I was lucky enough to
qualify for 2 years of college retraining we just have to tighten the belt and live on unemployment while I go back to school.
It is a great door of opportunity that has opened up to me.

Thanks for the quick and helpful responses.
 
nettogrisen said:
Yeah, I was wondering about that, but figured he probably ment momentary switches

sorry I did mean momentary, my typing fingers got happy
 
milldrone said:
Whew! I thought I had too much coffee!

???? I never knew there was such a thing as tooo much coffee :eek:

I know its time for a cup when I stop shaking... or I get that headache
 
ktm said:
Thanks for some excellant advice I didn't even know I could branch the OTE.

So if I address this like:

XIC I1:1/0 XIO I1:1/2 (motor) O0:2/0
(green) O0:2/0

XIC I1:1/1
XIO O0:2/0

XIO O0:2/0 (red) O0:2/1

Not exactly. The motor and the green light has 2 different addresses. I suspect it's just another typing error, but it's going to look like this.

asdf.JPG


http://www.thelearningpit.com/lp/logixpro.html is a nice PLC simulator. Free download, but it costs alittle to unlock all the exercises.
 
Doh! Of course....

It's late here, maybe I should START drinking more coffee...
 
Last edited:

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