from the Automation List department...
The top most used PLC systems around the world
PLCs and related questions. topic
Posted by Johan Bengtsson on 26 January, 2000 - 3:21 pm
Hello list

We are going to greatly extend the number of different PLC:s simulated in our educational softwares. My question is really simple: What types and brands of PLC is most used in different
parts of the world?

(Don't forget to mention what part of the world you are talking about, I don't know where all of you are from...)

/Johan Bengtsson
P&L, the Academy of Automation
Box 252, S-281 23 H{ssleholm SWEDEN
Tel: +46 451 49 460, Fax: +46 451 89 833

Posted by Weir, Bryan on 27 January, 2000 - 9:26 am

We had this thread a few months ago. Does anyone have a note of the previous

In the UK Allen-Bradley is probably the most widely used PLC. Siemens and
Mitsubishi are also very common.


Bryan Weir.

Posted by Neil Jepsen on 27 January, 2000 - 2:56 pm
In New Zealand, AB and Omron. ( My opinion)
neil J

Posted by Rick Roth on 27 January, 2000 - 3:41 pm
Here in northwest BC, A-B has the sawmill market pretty well cornered - thats 40 larger mills, 100 small ones. The exception is the smelter I work in, which uses Modicon, almost exclusively,
a few GE 9030s, and four Slc 100s.

Regards to the List! Rick..............

Posted by Jack Gallagher on 27 January, 2000 - 3:58 pm
I think these are as follows:

Allen Bradley


I am unsure of the rest of the world or if I am correct at all. Just what I have noticed.

Jack Gallagher
3 Vision Drive
Natick, MA 01760
Phone: (508) 650-9147
Fax: (508) 650-9310

Posted by David Lawton Mars on 27 January, 2000 - 4:47 pm
From my experience the 2 most popular are Allen Bradley and Siemens, in that order.
Mitsubishi is also fairly popular here in the UK and I've come across a few Modicon PLC's too.

Posted by Kevin Yates (Manchester) on 28 January, 2000 - 10:37 am
Just for interest. Rockwell in the UK claim to have 39% of the market.


Kevin Yates
Wormald Control Systems

Posted by Vijaysinh Kadam on 28 January, 2000 - 2:04 pm

I know that following are the PLC's used in US.

1. AB
2. Omron
3. Mitsubishi
4. Siemens

I have heard about use of Siemens PLC's in India.


Vijay Kadam
Automation Engineer
Mitta Technology Group
The Newest Division of
Work Ph # (408) 745 0500 Ext. 310
Home Ph # (408) 297 3063

Posted by Vijaysinh L Jadeja on 31 January, 2000 - 1:09 pm
Siemens PLCs are also widely used for power plants and cement industries.

Posted by Peter Kosin on 1 February, 2000 - 9:50 am
IMHO it is safe to say that the most used PLCs are Allen Bradley in the US, Siemens in Europe and
Mitsubishi in Asia. They all boast >40% market shares in their respective areas. Other common PLCs would include Modicon, Telemecanique, Omron ...

Peter Kosin

Process control engineer
INEA d.o.o.

Posted by Martin Karlin on 2 February, 2000 - 12:05 pm
Hello List,
I'm in Italy an alls that we see is SIEMENS. Maybe its because FIAT at some stage, I believe, had a lot of shares in Siemens, but if the factory is connected in some way to FIAT, its SIEMENS you'll find. I've seen some AB's but they're mostly on US supplied machinery.

Posted by Roger Irwin on 8 February, 2000 - 4:12 pm
> I'm in Italy an alls that we see is SIEMENS. Maybe its because FIAT at some
> stage, I believe, had a lot of shares in Siemens, but if the factory is
> connected in some way to FIAT, its SIEMENS you'll find.

Perhaps it also has to do with the Italian mentality that German products are great. That's why GM and Ford try to present themselves as German car manufacturers in the Italian market! Ironicly a lot of German badged products (such as Siemens washing machines) are in fact Italian products with German branding.

> I've seen some AB's
> but they're mostly on US supplied machinery.

At the electricians end (simple PLC's, counters ecc.) there is also a lot of OMRON stuff, but yes, nearly all automation seems to be SIEMENS. They are not so keen on the drives, ABB are very popular, and I was rather suprised to find out that there is a big ABB servomotor plant just down the road from me in Asti. This would appear to be 'contratendenza'!

Posted by Michael Johnson on 15 February, 2000 - 1:15 pm
It seems to me that if you are doing work in Europe and Central America, then Siemens is the norm. If you work here in the states, A-B is the norm with Square-D and Modicon coming in at a close second. However, Siemens is found all around the world while A-B/Rockwell is localized in North America and very small parts of Central America and the Caribbean. Hence, I think Siemens is number one in the world, not Rockwell.

Posted by Michael Sullivan on 2 February, 2000 - 1:48 pm
The top PLCs used in the world are as follows based on market share:

1. Siemens
2. Schneider Electric
3. Rockwell

North America
1. Rockwell
2. Schneider Electric
3. Siemens

1. Siemens
2. Rockwell
3. Schneider Electric

Mitsubishi has the leading market share in Japan and many other Asian countries.
Schneider Electric, Rockwell, and Siemens also have a strong prescence in Asia.

Posted by Mike Ryan on 3 February, 2000 - 2:09 pm
Are you presenting this as fact or opinion? If fact, what's the source of these rankings.

Mike Ryan
Aerojet Fine Chemicals

Posted by Michael Sullivan on 8 February, 2000 - 11:37 am
These rankings are based on facts obtained from the Automation Research Corporations Advisory Group in its report "Worldwide PLC Outlook" with data through October 1999. The details of this data (precise market share percentages by world, region, industry, company) can be purchased from ARC. Similar data is also available from several other research sources.

Correction: In North America, the current rankings are 1. Rockwell, 2.
Schneider Electric, 3. GE Fanuc, 4. Siemens.

Posted by Phill O'Meley on 7 February, 2000 - 11:45 am
This is a fairly broad statement, what is the I/O range you are referring to?

Phill O'Meley

Posted by Johan Bengtsson P&L Automatik AB on 7 March, 2000 - 12:51 pm
Thanks for the replies, both on list and off list

It seems like the worlds most popular PLC:s are quite what I already expected; A-B, Siemens and Schnider Electric. Modicon, Mitsubishi and Omron being a little bit smaller but quite significant

Europe: most Siemens
North America: most A-B
Asia: most Mitsubishi

This will mean implementing A-B and Schneider Electric (Siemens and Mitsubishi already there)

/Johan Bengtsson

P&L, the Academy of Automation
Box 252, S-281 23 H{ssleholm SWEDEN
Tel: +46 451 49 460, Fax: +46 451 89 833

Posted by Vijay Bharadva on 16 September, 2009 - 7:21 am
It depends on the application. With my experience as a PLC programmer, I have seen following applications.

1. Process industry : Rockwell
2. Machine application : rockwell/Siemens
3. CNC application : siemens/Allen-Bradley
4. power industry : GE fanuc
5. Tyre Industry : Rockwell/Modicon
6. Building automation : Telemechanique/Siemens LOGO/Rockwell PICO.

It depends on your maintenance crew's user friendliness also. With my experience Allen-Bradley is most user friendly PLCs.

Posted by Remco de Jong on 16 September, 2009 - 4:46 pm
Hello there,

Here in the Netherlands. For small crab and crane applications, normally I'll make my PLC-Programs in Siemens LOGO. It's a very simple PLC. For greater Cranes (For example 2 crabs) I'll make my programs in Siemens S7-200.

For automatic cranes I'll use the Siemens S7-300.

So you can see I'll make all of my PLC Projects with Siemens.


Remco de Jong
Control & Automation Engineer
Van den Berg Transporttechniek (DEMAG Cranes & Components)

Posted by M on 17 September, 2009 - 1:33 am
Wow does nobody use GE anymore? I come from a GE background well... my plant mainly used GE from series six's to pax RX7I's... actually we even had a few series one's on our gantry cranes.

Posted by curt wuollet on 17 September, 2009 - 9:36 am
They seem to have lost a lot of their popularity, I don't hear much. I don't think of them for anything new, I'm sure the PLCs are OK, I just haven't liked their software after logicmaster LM90. Reminds me of Step 7, I guess tools are important.


Posted by Mike Lamond on 17 September, 2009 - 4:27 pm
Cimplicity/Proficy Machine Edition is one of those tools that reminds me of Will Smith's line in the movie Men in Black about "unlimited technology" and Agent K's Ford LTD. The original quote is boderline if we're keeping the language clean here.


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