PLC question for beginner...again?

Practical Goat · Apr 17, 2019

Hi guys - I've got a Mitsubishi FX-24MR PLC that I'd like to check the terminal configuration. I'm new and learning the ropes here so I'd appreciate feedback.

I can see the top left-side (if looking at the PLC the right way up) has the power input (230VAC) - as for the 24v and 0v... is that my control input (separate 24v supply required?) or is it internally transformed and rectified to be an output? I understand I want the S/S connected up to sink (0v) so I'll link it with my DC 0v and am I right in thinking the RUN is connected to 24vdc to start the PLC..? I'll just link that across if so, so the PLC runs on start.

Thank you. I hope that made sense.

[ElectriciansForums.net] PLC question for beginner...again?

Practical Goat · Apr 17, 2019

Practical Goat said:
Hi guys - I've got a Mitsubishi FX-24MR PLC that I'd like to check the terminal configuration. I'm new and learning the ropes here so I'd appreciate feedback.

I can see the top left-side (if looking at the PLC the right way up) has the power input (230VAC) - as for the 24v and 0v... is that my control input (separate 24v supply required?) or is it internally transformed and rectified to be an output? I understand I want the S/S connected up to sink (0v) so I'll link it with my DC 0v and am I right in thinking the RUN is connected to 24vdc to start the PLC..? I'll just link that across if so, so the PLC runs on start.

Thank you. I hope that made sense.

View attachment 48879

I've sorted it now. It is an internal power supply. Just not sure what to do with the RUN terminal

plugsandsparks · Apr 17, 2019

Just looks like a remote input for Run, give it a try and see if the unit goes from stop to run when connected.
BTW - if you want to play with the unit , download the appropriate hardware manual for how to connect inputs and outputs and the software manual for programming. Been a while since i have touched a Melsec but they are straight forward

Practical Goat · Apr 18, 2019

Thanks plugsandsparks

timbobelfast · Apr 21, 2019

RUN just acts as an Input

See attached manual section 5.1.1

Are you using GX developer to programme?

Practical Goat · Apr 21, 2019

timbobelfast said:
RUN just acts as an Input

See attached manual section 5.1.1

Are you using GX developer to programme?

I am yeah - I've got both GXworks2 and GX Developer.

Thanks.

The Sword · Jul 1, 2019

Hi, hope you don't mind me chipping in. I'm all Allen-Bradley myself, have been for years, but I did cut my teeth on Mitsubishi. I have GX Developer myself. I think you will find the manuals quite easy to follow, so I hope you have lots of fun with it. If there is anything I may be able to help with, I will certainly try.

LeeH · Jul 1, 2019

FXGP is available as a free download if you hunt around.

edexlab · Sep 14, 2019

I'm looking to learn about PLC's and have got hold of an Mitsubishi FX2n-64MT for free brand new in the box ,it was going in the skip but I kept it back

Can anyone tell me is this a unit that I can learn basics on?
ie is there free software available ?

timbobelfast · Sep 15, 2019

Should be suitable for a test rig setup. You can download the wiring manual on the Web.
I've heard there is free software. Gx developer is the genuine programming software. You'll also need a programming cable. There's a few on ebay, yellow coloured with USB connection. Good luck!

StinkyPete · Sep 15, 2019

edexlab said:
I'm looking to learn about PLC's and have got hold of an Mitsubishi FX2n-64MT for free brand new in the box ,it was going in the skip but I kept it back

Can anyone tell me is this a unit that I can learn basics on?
ie is there free software available ?

Hello

IMO PLCs are very reasonably priced and use the industry standard ladder symbols.
Software is also free.
They are a good starting point.

But it really depends on what you are looking to achieve? And where you want to end up?

Do you want to build a custom central heating zoned control system?
Or design an automated scrubber system for use at an offshore gas terminal?

Home automation is very different to industrial...
Industrial is moving almost completely towards Rockwell nowadays (despite what Mitsi and Siemens fans will tell you).
But Allen Bradley is massively overkill for smaller projects. And expensive. And a bit too complicated if you've never seen it before/will rarely look at it for maintenance/upgrades/etc.

To through a spanner in the works... Domestic automation can now be pretty much all covered by use of Raspberry Pis. So is it worth learning PLCs for smaller projects? Better to learn some basic electronics and buy a £20 quid Pi starter kit and a bit of reading online?

(To state my position: I do industrial work. And have never been in the same room as a Raspberry Pi.)

What would you eventually want to do with PLC knowledge?

Cheers, SP

SheffSimon · Sep 16, 2019

StinkyPete said:
Hello

IMO PLCs are very reasonably priced and use the industry standard ladder symbols.
Software is also free.
They are a good starting point.

But it really depends on what you are looking to achieve? And where you want to end up?

Do you want to build a custom central heating zoned control system?
Or design an automated scrubber system for use at an offshore gas terminal?

Home automation is very different to industrial...
Industrial is moving almost completely towards Rockwell nowadays (despite what Mitsi and Siemens fans will tell you).
But Allen Bradley is massively overkill for smaller projects. And expensive. And a bit too complicated if you've never seen it before/will rarely look at it for maintenance/upgrades/etc.

To through a spanner in the works... Domestic automation can now be pretty much all covered by use of Raspberry Pis. So is it worth learning PLCs for smaller projects? Better to learn some basic electronics and buy a £20 quid Pi starter kit and a bit of reading online?

(To state my position: I do industrial work. And have never been in the same room as a Raspberry Pi.)

What would you eventually want to do with PLC knowledge?

Cheers, SP

I work in Industrial automation, to say it's completely moving towards Rockwell is a strange statement, I work on my many new Siemens systems, PLC, SCADA and PCS7. Power stations, packaging, baggage handling systems to name but a few.

edexlab · Sep 16, 2019

Really it's to broaden my horizons
I'm in a new job with some plc work not done any yet training at some point in the future but its mainly just checking the program when there are issues, no programming as such but it's no reason not to learn for myself

timbobelfast · Sep 17, 2019

This is a good book covering multiple brands for programming logic, Mitsubishi Siemens rockwell erc

Amazon.com

Cbuk2k2 · Sep 26, 2019

timbobelfast said:
This is a good book covering multiple brands for programming logic, Mitsubishi Siemens rockwell erc

Amazon.com

W. Bolton has written quite a lot of useful books.

If you want a cheap PLC to play with the automation direct click ones are really cheap.

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Practical Goat said:
Hi guys - I've got a Mitsubishi FX-24MR PLC that I'd like to check the terminal configuration. I'm new and learning the ropes here so I'd appreciate feedback.

I can see the top left-side (if looking at the PLC the right way up) has the power input (230VAC) - as for the 24v and 0v... is that my control input (separate 24v supply required?) or is it internally transformed and rectified to be an output? I understand I want the S/S connected up to sink (0v) so I'll link it with my DC 0v and am I right in thinking the RUN is connected to 24vdc to start the PLC..? I'll just link that across if so, so the PLC runs on start.

Thank you. I hope that made sense.

View attachment 48879

Have you got the software to program it? Ou can normally pick the cables up from eBay but the software is often a few £100, the modern stuff can be £1000’s.

PLC question for beginner...again?

Practical Goat

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plugsandsparks

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CLICK Series PLCs (Stackable Micro Brick) | Programmable Controllers | Products | AutomationDirect

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