Your Personal PLC Tutor Site -

Finely, a plc site that gives you real answers! Iv'e been programming for about three years and I would like to have any information on the Siemens Simatic S5 and S7 plc's. I have been using Mitsubishi FX series PLC's and the MEDOC programming software. So I'm trying to acclimate myself with Siemens STD programming techniques. I know their wed site is a source of information, but would like to have some more programming examples.
randy <big_stag@msn.com>
toledo, oh USA - Wednesday, December 27, 2000 at 19:12:12 (EST)

Congratulations and many thanks.That is very spectacle site, by the teaching way, very simple and effective and cool to learn. I actually am teaching PICs and PLC Foundations, and i had worked with another programs and simulators but thi is the "Maximmus". Only rest to ask for you what softwre did you use for animation? Great, wonderful and marvelous site!!!. Argemiro Martinez
Argemiro Martinez <amartine@col3.telecom.com.co>
Sincelejo, Su Colombia - Saturday, December 16, 2000 at 21:17:34 (EST)

This site gave me the initial information on which I am building a laboratory automation business. The good news about PLCs is their power to automate. The bad news is how few people know about them. I dream of making PLCs readily useable by just about everybody. Thanks, Phil, for bringing us closer to that sensible state.
Jennifer Winkler, Lab Automation Designs <jjwinkle@concentric.net>
Fairfield, CA USA - Saturday, December 16, 2000 at 13:42:39 (EST)

excellent site. I am a student at a vocational high school and Im majoring in electrical. Hopefully I will understand most of this stuff and be able to us
Lafe <Lafe444@aol.com>
Btown, MA USA - Thursday, December 14, 2000 at 16:34:20 (EST)

This is a great site form learning PLCs. As a Mechanical Engineer for a product development firm, learning the basics of PLCs could not be any easier...
Marc Mitchell <marc@questengineering.com>
USA - Thursday, November 30, 2000 at 07:36:28 (EST)

Good site. I am an Engineer for a plc company in New Zealand as well as being the PLC tutor. I really enjoyed youe site and regularly recomend it to my students. I am able to help anyone who needs it so give me a call if you need help.
Colin G. Meaden <Colin@meadcam.freeservers.com>
Auckland, New Zealand - Wednesday, November 29, 2000 at 21:59:27 (EST)

Les felicito por la información que presentan en la página, pues es la misma esta presenta información práctica, que facilita el aprendizaje de este tipo de controladores. Les agradesco y que sigan adelante, pues que con páginas de este tipo el internet es realmente la gran autopista de la información, que por otras paginas la distorcionan.
Roberto Noboa Baertsch <maxdemian77@hotmail.com>
Riobamba, Chimborazo Ecuador - Tuesday, November 21, 2000 at 22:09:43 (EST)

IT IS A GREAT SITE FOR STUDENTS OF ENGINEERING TO SURF ON.ALSO , I FEEL THIS IS THE BEST SITE AVAILABLE FOR PEOPLE IN THIS FIELD TO UPDATE THEIR KNOWLEDGE.
Nirmal Thomas .J <Nirmalthomas@usa.net , Nirmal77@chequemail.com>
Coimbatore, TN India - Friday, November 10, 2000 at 01:27:45 (EST)

I need free download for ladder program, please tell me about sites which have this free download
ramadan soliman <ramadan_s@masrawy.com>
Alexandria, Egypt - Friday, November 10, 2000 at 00:18:12 (EST)

I have searched the web in and out for PLC and this is definately the best! Keep up the good work.
Andréas Svensson <andreas@elastocon.se>
Sweden - Thursday, November 09, 2000 at 13:17:49 (EST)

An excellent site, working with AB3 for 18 years enjoy exploring the others, good job.
Aubrey Caldwell <AWCaldwell@hotmail.com>
Richmond, VA USA - Saturday, November 04, 2000 at 23:48:21 (EST)

I want to learn about PLC . Could you please show me any sites to download free books on this subject ??? Thank you very much. Giao.
Nguyen anh Giao <nguyen-anh.giao@vn.siemens.com>
Hanoi, Vietnam - Monday, October 30, 2000 at 07:54:48 (EST)

Add your comments here very good site been looking for some thing like this for a long time jjl
jjlatchman <jjlatchman@qcs-inc.com>
uk - Saturday, October 28, 2000 at 17:54:55 (EDT)

Excellent!! I was exactly looking for this- a site in which the principles of plcs were explained. Thanx a lot.
Miguel López Genicio <lopezgenicio@usa.net>
Madrid, Spain - Thursday, October 26, 2000 at 06:38:30 (EDT)

Excellent material for starters like me. Keep up the excellent work! Eagerly waiting to check out... every single new Chapter from your site!!
Swee Hing, Young <SweeHing.Young@my.bosch.com>
Bayan Lepas, Penang Malaysia - Monday, October 23, 2000 at 00:05:39 (EDT)

Brilliant site i found what i wanted to help me do my school assignment. The Pictures added that extra bit of touch to it Thanx again from the Hopstr
Scott Blackford <hoppygoingtotheyr2000@yahoo.com>
Darwin, N.T. Australia - Thursday, October 19, 2000 at 12:02:34 (EDT)

A very good site to share information. It would be very useful if the site could house some ladder logic programming examples for beginners and/or experts to see a new/better way to program.
Alan Verhagen <averhagen@chinetco.com>
Waterville, ME USA - Monday, October 16, 2000 at 13:45:17 (EDT)

Great site ,i realy get some answers and it looks that you can get good respons for your questions , keep going !!!!
Jerry Rutström <info@rutstrom.com>
Jokkmokk, Sweden - Friday, October 13, 2000 at 16:45:50 (EDT)

WELL DONE A REALLY USEFULL AND VERY WELL LAIDOUT SITE. HOPE THE BOOK IS AS ENJOYABLE.
james power <james.power@esatclear.ie>
WATERFORD, USA - Tuesday, October 10, 2000 at 16:51:37 (EDT)

Very very good web site. I even learned something after using plc for a few years. well done phil. May I make a suggestion how about a demonstration ladder program for example, what about a set of traffic lights. and some text explaining it.. Again briliant site well done
mark adlington
UK - Tuesday, October 10, 2000 at 12:30:35 (EDT)

It's wonderful site. I'm a college student and I want to learn PLC. Can I get a free handbook (PLC pict. include)? Thanks a lot.
Ganjar Nugraha <ganjar@bozz.com>
Bandung, Indonesia - Sunday, October 08, 2000 at 04:22:48 (EDT)

This really wonderful site for those people who are in PLC field. It is really great work done by you. However i would like know about real world applications in areas like Process control
Girish <girish.uppin@mailcity.com>
Mumbai, Maharastra India - Friday, October 06, 2000 at 11:28:35 (EDT)

I was recently registered as a Longshoreman and have been working at DeltaPort on container cranes.They have some of the most advanced PLCS in the world,and this tutoriol has helped me tremendously.I've been a Journeyman Electrician for 23 years but have not been much in Industrial.With my brothers help and this great site I'll have a good fix on things now. I'll look forward to e-mails and updates.Thank you considerably.James.
james ireland <nrg_ys@hotmail.com>
coquitlam, BC canada - Monday, October 02, 2000 at 01:22:43 (EDT)

I am an EE with experience in writting and working with various kinds of software from the computer industry. I am new to PLC's and I have been searching for some assistance in begining to learn. Your site is fantastic, just what I needed. The only comment that I can think of as a slight improvement would be to slow down your animations. (They step through so quickly I have a time keeping track of changes that interreact with multiple points.) Thanks and thanks again.
Mark Miller <miller.mark.b@worldnet.att.net>
Hampstead, NC USA - Sunday, October 01, 2000 at 15:19:52 (EDT)

Phil, the message board is a great addition to your site. I keep referring all my students here. The feedback has always been good. It makes my job easier when they can review the fundamentals online from home.
William Hiltz <w_hiltz@husky1.symarys.ca>
Halifax, NS Canada - Sunday, October 01, 2000 at 09:01:40 (EDT)

I am a Electrical & Electronics Diploma Holder, working as a PLC Technician for Baggage Handling System in Dubai International Airport. This is a very useful site for both begginers and experts. I appreciate the people who built this site for their fruitful hardwork. Thanks a lot.
shenbagaraj <shenbagaraj@yahoo.com>
Dubai, UAE - Saturday, September 30, 2000 at 03:05:19 (EDT)

I am an Electrical engineer and we are using Allen Bradley and Ge Fenuc Plc's, I found this helpful both for begginers and for people working alreadyon Plc.s. I must congratulate peoples who have contributed in creating such a wonderfill site.
Arif Hashmi <engineerarif900@yahoo.com>
karachi, Sindh Pakistan - Friday, September 29, 2000 at 17:54:50 (EDT)

I am new in the PLC business and I appreciate your help to guide me around in this matter. Thanks !!!!
Mark Grypdon <mark.grypdon@teejet.be>
Ghent, Belgium - Thursday, September 28, 2000 at 07:18:56 (EDT)

Fantastic Site! I still don't believe there is such a site. I just bought the book. Thanks for everything!
Tony Ruggio <tonyru67@hotmail.com>
Mayfield, MI USA - Sunday, September 24, 2000 at 23:36:53 (EDT)

Great Site! I am utilizing the PLC Programming Tutor for my Instrument Techs and Electricians who are interested in learning PLC programming principals.
Mike LeBlanc <mike@instrumentcontrol.com>
Ventura, CA USA - Sunday, September 17, 2000 at 15:11:47 (EDT)

Great great site,first site which i found so useful for plc related people like me, i thanks heartly. Please add prgraming related matter.
riyajahamad <riyaj_kaji@yahoo.com>
nashik, maharashtra india - Sunday, September 17, 2000 at 11:38:31 (EDT)

Phil I bought your book 6 months ago and it really helped me get the concept of programming down. Thanks By the way can you write part 2 with PID loop control, Encoders, stepper motor control and any other things you might dream up. Thanks Rick
Rick Bristol <rabristol@yahoo.com>
El Cajon, Ca. USA - Sunday, September 17, 2000 at 03:24:57 (EDT)

An excellent site for biginners. Very simple instructions with real world examples. I recommended your site tp two of my friend who wants to learn about PLCs. Good Job!
narasimha casturi <racsturi@hotmail.com>
Houston, TX USA - Saturday, September 16, 2000 at 19:23:09 (EDT)

I just found your site, and it looks great so far, but I can't find any thing on pid loops??
Steve Black <steve.s.black@fritolay.com>
Casa Grande, Az USA - Thursday, September 14, 2000 at 04:16:21 (EDT)

THIS IS THE FIRST SITE THAT I REMEMBER WHEN I NEED INFO ABOUT PLCS'. THANK YOU
Kaan KALYONCU <kalyoncu_kaan@hotmail.com>
KARABUK, TURKEY - Tuesday, September 12, 2000 at 12:00:10 (EDT)

I found that site very good for beginners. Very useful, to the point and easy to understand. Also good animation and examples. Good work Thankyou.
Shoaib ARshad <shoaib@plant.tapalenergy.com.pk>
Karachi, sindh Pakistan - Saturday, September 09, 2000 at 07:34:53 (EDT)

I just started in the maintenance dept at work and this is one of the things that i needed to learn about (PLC's) I would just like to say thank you for the help and all the great documentation that you put out for all of us to use.
john dasilva <tdasilva2@home.com>
Windsor, on canada - Monday, September 04, 2000 at 00:48:44 (EDT)

I just started in the maintenance dept at work and this is one of the things that i needed to learn about (PLC's) I would just like to say thank you for the help and all the great documentation that you put out for all of us to use.
john dasilva <tdasilva@home.com>
Windsor, on canada - Monday, September 04, 2000 at 00:48:12 (EDT)

thankyou verymuch for creating this site.i knew first time this site on internet.I want to give a suggetion to creat a progamming examples on this site for all typs of plcs&I/O specification.
S.K.Verma <jai_69bild@yahoo.com>
Delhi, delhi INDIA - Sunday, September 03, 2000 at 07:02:29 (EDT)

I just have to tell you what a fantastic job you've done here. We all owe youplenty for developing such a wonderful place to learn about plcs. I've seen the light!!!!!! Keep it up.
Tom Anderson <toma1652@yahoo.com>
Detroit, MI USA - Tuesday, August 29, 2000 at 23:43:19 (EDT)

GREAT SITE FELLAS OR FEMALES? JUST GETTINT INTO PLC PROGRAMMING AS MY EXPERTESE IS VB,ASP THOUGHT I WOULD TRY TO MAKE SOMETHING MOVE ABOUT INSTEAD OF JUST ADDING STUFF UP THANKS FOR THE HELP KEEP IT GOING
JOHN HICKLING <OWEN1807@HOTMAIL.COM>
NOTTS, UK - Thursday, August 24, 2000 at 07:16:31 (EDT)

This site is awesome cause it really helped me understand how plc's work. Please keep this good work and god bless you all.
Junior Crespo <dalepabajo16@hotmail.com>
Isabela, PR USA - Wednesday, August 23, 2000 at 22:15:17 (EDT)

I can't help it, though everyone else is saying but still, I must.... say ... it too, YEAH! its a great site, but if there was an option of ONLINE CHAT with the GURUs, that would add the sparkling tint in this site. ANYway keep up the good work
M. Jamil <iel@cyber.net.pk>
Karachi, PAKISTAN - Thursday, August 10, 2000 at 06:42:45 (EDT)

this is a really informative site. to the point easy to use . to understand working of PLC's. this is the best site i found on such topics. U have done an Excellent Job !!!!. You can now go to other fields like DCS (distributed control system.) .
Gaurav Kasaliwal <gaurav_rk@yahoo.com>
Mumbai, India - Monday, August 07, 2000 at 14:09:40 (EDT)

Nothing to declare!!!SIMPLY THE BEST SITE OF PLCs of internet!!! A great job of the site's founders!!! I am from Brazil and I will recommend this site for the people of my country!!! This site says to the new users in a language that they understand!!! Very GOOD!!!
Leandro Oliveira <l.oliveira@ig.com.br>
Rio de Janeiro, RJ Brazil - Saturday, August 05, 2000 at 22:10:32 (EDT)

Really, great site. I'll more expirienced by means of this site.THANKS..
MUSTAFA ALTIPARMAK <maltipar@kalekalip.com.tr>
ISTANBUL, 90 TUR - Friday, August 04, 2000 at 07:57:35 (EDT)

Great site taking users from fundamentals to complexities in a gradual manner...... Again great job!!!
Rahul <rahuk_iit@usa.net>
India - Thursday, August 03, 2000 at 02:29:15 (EDT)

i was looking the website in the net for this plcs and got this in search engine and felt very happy after seeing this because i gives us all details of the plcs both hardware and software and hoew they work and all the things i needed. this is very good
G. RAJA RANJITH <raja_ranjith@123india.com>
bhubaneswar, orissa india - Monday, July 31, 2000 at 12:59:56 (EDT)

Great site, here at the Washington metropolitan Transit Authority we use various vendors plc's in such equipment as train lifts, elevators, escalators, overhead cranes,train washers, bus washers pumping stations and tunnel ventilation.
Quinton Jones <quintonjones@excite.com>
Fort Washington, Md USA - Wednesday, July 26, 2000 at 20:45:29 (EDT)

A very good site indeed for all PLC concerns I work in the field as an Automation Engineer and come across different problems with different vendor PLC's so I may be of help to someone and viceaversa.
Rudy Gonzalez <gonzar@ch.etn.com>
Anahein, CA USA - Monday, July 24, 2000 at 00:51:48 (EDT)

One more plant electrician(water production) has been enlightened on "plc,s". great site. keep up the good work!
allan strachan <al@strac.worldonline.co.uk>
aberdeen, uk - Sunday, July 23, 2000 at 16:17:11 (EDT)

Ive been looking for a site to learn about plcs and came across this one,got to say best ive seen very informative and easy to follow well done!
nige b <nb.99@ic24.net>
manchester, uk - Sunday, July 16, 2000 at 09:52:50 (EDT)

Hey Phil, Great site! Our plc techies at ConAgra recommended it to me. Now I am on the way to the plc promised land. Hell, I even bought the book! Pretty cool, huh?
Chris Moore <crmoore@alltel.net>
Dalton, GA USA - Tuesday, July 11, 2000 at 12:34:50 (EDT)

I DISCOVERED THE SITE THROUGH www.eng-tips.com THE TUTOR LEVEL IS VERY NICE AND BIG EXPOSURE. THANKS FOR INVALUABLE INFORMATION BEING SUPPLIED TO US.
JITENDRA MAGANLAL GORASHIA <harshada@zajil.net>
RIYADH, SAUDI ARABIA - Friday, June 30, 2000 at 04:02:34 (EDT)

I am just learning PLC programming and you site is very informative on the basic concepts. The plant I currently working out incorprate 5 plc and hundreds of I/O.
Brain Atkinson <batkinson@jnlk.com>
Millivile, NJ USA - Tuesday, June 27, 2000 at 12:32:56 (EDT)

This is the best site for "Electricians" that I have Visited Keep up the excellent work . regards Brant Grundy (Trumby)
Brant Grundy <trumby@emerge.net.au>
Esperance, WA Australia - Sunday, June 25, 2000 at 22:50:29 (EDT)

Well A Good Site after a long time , Informative , Easy to Understand , Nice Shading , beautiful mantainence , Highly Qualified staff in Live Q&A and really site of the Millinium.I really apperciate them who made this incredible site , They Are the Good Guys in small World.
Mohammad Bin Shan <shanimm@engineer.com>
karachi, sind Pakistan - Sunday, June 25, 2000 at 03:03:52 (EDT)

it is good to have dedicated site of plc programmes I came to this site accidently while looking for automation. and found this site quite informative but slight on elementary side for 5years programmer on plc like me.keep it up. as i am going to visit this site quite aften
sunil rathaur <sunilrathaur@usa.net>
baroda, gujarat india - Tuesday, June 20, 2000 at 02:17:31 (EDT)

Rarely do I feel the urge to sign a guestbook but this is certainly the exception. A great site. Very educational. Highly recommended.
Burt Shaw <shawburt@nbnet.nb.ca>
Juniper, NB Canada - Monday, June 19, 2000 at 12:08:36 (EDT)

Most interesting site I have ever come across on internet. I really appreciate your full team for making it sooo exiting. I wish you all the best of luck
J. S. Dhaka <dhakajs@hotmail.com >
Mumbai, India - Monday, June 19, 2000 at 04:41:26 (EDT)

Cool Site. I am a new maintenance employee at Becton Dickinson. I want to move up in the company into a job that works directly with PLCs. Your Site is a great starting place. One of our Techs showed me your site. My only suggestion would be to make a downloadable version of the tutorials.
Randy Trotter <goopman66@hotmail.com>
Manning, SC USA - Thursday, June 15, 2000 at 18:44:03 (EDT)

G'day Phil, Great site, very informative. Is that a picture of you? 'Cause if it is, with that cheezy grin and accompanying moustache, you look like a Columbian drug pusher. Remedy: Lose the fluff over the water hole and get yourself some good Aussie beer....It'll make you feel real good ......trust me !!
Glenn Wainrib <glennbw@bigpond.com>
Melbourne, Vic Australia - Thursday, June 15, 2000 at 06:57:40 (EDT)

Going thru the contents of the site was an excellent and educative experience. The emphasis given to the fundamentals is most welcome. Adding a section on the Safety Related PLCs and explaining the Safety Instrumented Systems will be very useful.
Suresh Kumar <dsuresh@idealtd.com>
Chennai, TN India - Tuesday, June 13, 2000 at 02:07:56 (EDT)

Well done!!!!!!!!! i really appreciate your piece of work...it really helped me a lot in acquiring this kind of info....Thanks a lot and keep up the good work bro.....
lino p. guce <linoguce@hotmail.com>
Dubai, UAE - Sunday, June 11, 2000 at 03:13:28 (EDT)

Add your comments here SUPER SITE! I've completed a plc5 course at Tennessee Technology Center and they didn't cover half the areas you have. I would/will recommend this site to anyone getting into this field. I look forward to all your updates. A suggestion, a links page to troubleshooting and/or testing info for PLC's. Again, a fantastic site to say the least!
Jon Mead <aec7@msn.com>
Mason, TN USA - Friday, June 09, 2000 at 11:22:41 (EDT)

I thoroughly enjoy this site. I just completed a course at Middle Tennessee State University this spring on PLC programming and I'm hooked. On numerous occassions I directed students in my cless to this site for direction and clarification in their gray areas. I also suggested the book, which I purchased myself. It was more useful to me than the text!! I am glad to see that you will be adding a feature to allow users to post ladder diagrams. I was surprised at the amount of responses I received for my program problem I posted on the interactive Q&A board. THanks for maintaining a great site Phil.
John <John.Derr@dana.com>
Brentwood, TN USA - Thursday, June 08, 2000 at 11:10:20 (EDT)

This site was of a great help. It certainly made me more aware of what the help wanted ads may be referring to. Systems that I work with every day now has a name and history. I can't find any fault in your web site.
W, Kent <wk2020@hotmail.com>
Stone Moutain , Ga USA - Thursday, June 01, 2000 at 11:47:57 (EDT)

First let me Thankyou ! I am a first year student, I found your web site on PLC to be very helpful with me understanding with PLC .It has given me hope ,and the knowledge , that I might have missed durning class . I would like to thank also Mr.Gams at Pennsylvania Institute of Technology .
Phil Hartley <dallas899@aol.com>
Brookhaven, pa USA - Wednesday, May 31, 2000 at 18:51:19 (EDT)

I have studied Mechanical Engineering and have wanted an insight into PLC's and have been looking for the normal short cuts ans your Tutor has been terribly helpfuland is at the right price, "free". thankyou
Ron Peterson <p_ron@hotmail.com>
Sydney, N.S.W. Australia - Monday, May 29, 2000 at 05:52:20 (EDT)

Educational, enlightening in electrical engineering. Thanks for making & sharing this PLC site. You are a blessing.
J. O. Antolin <joa3231@aol.com>
Los Angeles, CA USA - Friday, May 26, 2000 at 01:55:11 (EDT)

Bought "the Book" awhile ago and liked the format. Great for beginners and a useful reference tool I keep near my computer. I haven't visited for a while and am glad your still here and adding to "the Book"!
Mark R. Auberg <aubergm@honcompany.com>
Muscatine, Ia USA - Saturday, May 20, 2000 at 20:04:20 (EDT)

VERY INFORMATIVE SITE HAVE BEEN LOOKING FOR THIS FOR MONTHS IT WAS LIKE FINDING A FOUNTAIN OF INFO. EXACTLY WHAT I NEEDED TO CONVERT ANALOG THEORY TO DIGITAL THEORY THANKS
ROCKY MALAVE <fmd2104@bellatlantic.net>
NYC, NY USA - Sunday, May 14, 2000 at 07:41:17 (EDT)

I am very happy today because I can found a very good site, I am working with a proyect usin PLC's Hitachi, but is very dificult undertand some programas because I am a beginner and I do not know PLC programing. This site is a helping tool to undertand this matter. thank you very much.
Jose Torres Jaime <jose.torres@nissan.com.mx>
Xochitepec, Morelos Mexico - Wednesday, May 10, 2000 at 16:17:28 (EDT)

This is the most comprehensive site on PLCs on the net. Thanks anyway 'coz it helped me a lot for my practical exams. Please update this site more often . Thanks once again!!!!!! Allwyn
Allwyn Samuel <allwyn-samuel@usa.net>
Pune, Maharashtra India - Thursday, May 04, 2000 at 14:08:58 (EDT)

The site is great! It's the first time I have used it and I have found it very informative. It's the one site that actually is updated with a constant flow of Q&A's. Well done, I am sure it will work for me too! Best Wishes Makky. M
Makky. M <testpilot@europe.com>
Yorkshire, SY UK - Tuesday, May 02, 2000 at 15:32:50 (EDT)

Right on time. I have discarded all the difficult-to- understand text books I have been using to learn PLC. Your website has ALL the details and good for beginners. Thanks alot and God bless you.
Gimba Hassan <gimba.h@mailcity.com>
Lusaka, Zambia - Monday, May 01, 2000 at 12:00:18 (EDT)

Nice to see a site with great information for people with little experience in PLC's, will recommend to our plant electricians.
Manny Casanova <M.Casanova@RidgelineEnterprises.com>
Vista, CA USA - Thursday, April 27, 2000 at 22:31:30 (EDT)

hi thank for ur site. big help for PLC.holp someone help me because my language proublenm.I am chinese stay in New zealand Auckland PLEASE THANK e-mail sang123456@excite.com
wen sang <sang123456@excite>
auckland, new zealand - Tuesday, April 25, 2000 at 21:32:44 (EDT)

Thank you for creating this page. I needed a material to explain non-electrical people PLCs, using methods and language everybody could understand
Bolko J. Skowron <bolko.skowron@us.ina.com>
Cheraw, SC USA - Thursday, April 20, 2000 at 11:42:50 (EDT)

This is great, A free site that actually teaches you something. This looks very informative and will enjoy it. I did order your book and will study it cover to cover. Thanks
Russ <snowyhill@earthlink.net>
mason, NH USA - Tuesday, April 18, 2000 at 18:01:38 (EDT)

I thank you for this very interesting site. i made a training in Rockwell Automation and your site helped me a lot to succeed in my training. Thanks
Mouna <mouna_elkhatib@hotmail.com>
Irvine, CA USA - Monday, April 17, 2000 at 18:08:08 (EDT)

As I am new in the field of PLCs and ladder logic, this site provided the right background knowledge for me. I would recommend it to any beginner. Thanks.
H.Lisk
England - Friday, April 14, 2000 at 08:41:56 (EDT)

My customers sometimes need (basic) help and information that would be too costly for me to provide (for free) and for them to afford (were I to charge). Your site offers more than most would ever normally need, and is therefore a wonderful solution to this problem. Would it be alright with you if I linked to your page from our website?
Timothy Davis <admin@lighthouseplcs.com>
Eugene, OR USA - Thursday, April 13, 2000 at 20:28:08 (EDT)

A great job for providing such a useful site.It is really wonderful to learn like this. There seems that it will be more helpful if programming of ladder logic may be disscussed in more details especially for any analog control system. Thanks
Maruf Anwar <marufmg@yahoo.com>
Karachi, Pakistan - Thursday, April 13, 2000 at 15:24:26 (EDT)

Add your comments here Thank you to PLC Tutor for simple and easy guide to understand PLC operation. Programming guide for different type of PLC is recommended to be included for those prefered to learn and understand PLC by it is brand. Keep up this good work.
Livdesvaran Ramasamy <devsha@tm.net.my>
Georgetown, Penang Malaysia - Wednesday, April 12, 2000 at 23:12:17 (EDT)

Thanks just doesn't seem to be enough. I was given a quick course on plc's before starting a maintenance job, and have been doing ok since, but for the first time I actually understand math functions and communications.
Robert Farrar <cbfarrar@ihorizons.com>
Canada - Wednesday, April 12, 2000 at 13:08:31 (EDT)

Thank you for the information presented on this site, but can it be updated now as it has gone past the 2000 deadline of the world ending, but your site is still talking about it.
Happy Shopper <Happy@yahoo.com>
Huddersfield, UK - Tuesday, April 04, 2000 at 11:46:09 (EDT)

Add your comments here Thanks for a easy to understand site on this technology. Getting up to date info on this subject is usually harder than pulling teeth on a shark.
Ted Wetherbee <wetherbeet@mailhost.ftscpac.navy.mil>
Pearl Harbor, USA - Monday, April 03, 2000 at 16:46:27 (EDT)

Your web site is great! It is wonderful to learn something useful on the Internet. I think most people are content to be entertained. Many of the machines I work on contain PLC's, and I understand conceptually what they do, but this is the first technical theory I have been exposed to to that explains everthing in easy to understand detail.
Biff Baker <biff@me-man.com>
Salt Lake City, UT USA - Thursday, March 30, 2000 at 20:16:58 (EST)

Great job Phil. Keep up the good work. The animations are interesting. Looks like it's very informative for novices.
Frank <claufra@dunwoody.tec.mn.us>
Minneapolis, MN USA - Tuesday, March 28, 2000 at 11:16:19 (EST)

Dear Sir, Your site is much better then other. Also sir If you also update in hours it will be much more beatiful.
Jitesh Mehta <xpoworld@hotmail.com>
india, maharathra INDIA - Tuesday, March 28, 2000 at 08:05:39 (EST)

Great work! Thank you very much for your help!!!!! Mica.
Amilcar Tavares, aka Mica <mica_quinha@hotmail.com>
Assomada, SC Cape Verde Isl. - Tuesday, March 28, 2000 at 07:00:02 (EST)

Glad to see a PLC tutor site in the web. I'm 20 years in the PLC "environment". I will look at your site more often, hope more people will do the same. Good luck.
Ernesto Siracusa <sir.ernie@tiscalinet.it>
Angeles, Philippines - Saturday, March 18, 2000 at 01:35:22 (EST)

I would like to thank you for this wonderful site. It is very informative and so helpful.
Ozlem Bull <tobull@compuserve.com>
westminster, co USA - Wednesday, March 15, 2000 at 23:07:54 (EST)

Add your comments here.....Great site!! I have learned a lot about PLC's and the more I experiment with them the more I like them. I'm still basically a beginner and need as much help as I can get......Thanks.........Les.
Les <les44@setel.com>
Hazard, Ky USA - Wednesday, March 15, 2000 at 14:47:55 (EST)

A very good site. As a newcomer to PLC, this site has been a great help. I have already ordered your book. Thanks!
Don Power <apexuser@mindspring.com>
Holly Springs, NC USA - Wednesday, March 15, 2000 at 09:45:42 (EST)

What can I say but BRILL, you've just helped me pass my exams, thanks alot, Catherine 19yrs
Catherine Litster <catherine@hotmail.com>
Bristol, England - Tuesday, March 14, 2000 at 10:12:42 (EST)

Add your comments here I got all the information I was looking for, in a serious, unbiased, very professional way. Thanks a million for such an effort. i realy appreciate it, and no doubt I'll be back very soon.
Ricardo C. Il Grande <rilgran@telcel.net.ve>
Valencia, Venezuela - Saturday, March 11, 2000 at 10:08:55 (EST)

Una sola palabra: EXCELENTE. Realmente util. le recomendare amis amigos visiten este formidable sitio. Muchas Gracias.
Juan Gerardo Jiménez De Felipe <gejimenez@yahoo.com>
Córdoba, ver México - Friday, March 10, 2000 at 02:38:50 (EST)

Add your comments here This is a great site. Thank you very much for a very clear and well presented Tutorial.I have been looking for something like this which explains steps in a very clear and easy manner.
Richard Wancer <richard.wancer@watercorporation.com.au>
Perth, WA Australia - Friday, March 10, 2000 at 00:09:51 (EST)

Wonderful site! I am an electronics instructor at Lane Community College, in Eugene, OR. I am developing some PLC courses, both for our regular students and for industrial customers. Your site is thorough, easy, and fun to use, and it's nice to see information that is not manufacturer specific. Thanks much!
Fiora Starchild <FioraStar@aol.com>
Eugene, OR USA - Thursday, March 09, 2000 at 23:57:18 (EST)

Add your comments here This is a excellent site! As much as the industry is using PLC's, it's about time there was a place to learn about them, not just where to buy them. Thanks a bunch!
R. A. Bourne <R A Bourne@aol.com>
Thomson, Ga USA - Thursday, March 09, 2000 at 22:13:37 (EST)

Finally! A site everybody can learn from. Your infomation is Much better-written than the technical manuals that come with the equipment. We needed this to instruct our technicians (and myself). This site helps to introduce PLC's to our Non-Controls experts: Mechanical engineers, designers, chemists, etc.
Richard C. Rew <Rrew@itnes.com>
Wheat Ridge, CO USA - Thursday, March 09, 2000 at 11:24:53 (EST)

Oh, so nice! Thank you, I will visit here again. I hope I can do some work for your site.
John Cheng <zynew@hotmail.com>
Toronto, Canada - Wednesday, March 08, 2000 at 16:12:54 (EST)

A nice site for finding information about PLC congrats for the work well done IRFAN
IRFAN KHALID <qtpak@lhr.comsats.net.pk>
Lahore, Pakistan - Monday, March 06, 2000 at 13:14:40 (EST)

Outstanding Web site for the PLC beginner. You should be commended for your excellent work in providing such useful information for us to learn. Thank you very much.
Joe Villarreal <Jvillar969@aol.com>
Orange, CA USA - Saturday, March 04, 2000 at 00:40:43 (EST)

I have a problem with shift registers at the moment & found the information on your site on this subject of invaluable use THANKS VERY MUCH ILL BE BACK !!!!!
Stuart Wood <s.m.wood.uk@virgin.net>
united kingdom - Friday, March 03, 2000 at 17:42:07 (EST)

I have a problem with shift registers at the moment & found the imformation on your site on this subject of invaluable use THANKS VERY MUCH ILL BE BACK !!!!!
Stuart Wood <s.m.wood.uk@virgin.net>
united kingdom - Friday, March 03, 2000 at 17:36:16 (EST)

ADD SOME MORE INFORMATIVE THINGS SO THAT IT MAY HELP US IN FUTURE.
SANDIP GAIKWAD <GAIKWADS14@HOTMAIL .COM>
mumbai, MAHARASTRA INDIA - Monday, February 28, 2000 at 03:27:20 (EST)

Add your comments here Very Nice, and refreshing to see. I would Highly recommend it to anyone.
Bill Addiss <Bill@Electrical-Contractor.net>
USA - Sunday, February 27, 2000 at 10:27:49 (EST)

This is a great site for a beginner and as a reference guide. Thanks for your efforts. I will have Joe and Steve check this sight out so they will have positive comments at our next RAP session . I also ordered your book.
Bill O'Sullivan <billosullivanjr@centralva.net>
Roanoke, VA USA - Saturday, February 26, 2000 at 03:46:46 (EST)

Good site.keep it up!I want to know about installtion of plc.Please, write a new page about it.Thanks for the site.
chandranath marick <cnm@rediffmail.com>
calcutta, west bengal india - Thursday, February 17, 2000 at 23:59:50 (EST)

I just stumbled across this site late last night and havn't spent much time on it but you should be commended! I've been in industrial maintenance for approximately 4 years and this is the most useful information i have seen. Thank you very much and keep up the great work. I plan on letting all my co-workers know about your site. Thanks again!
ken kessler <kenk@ktis.net>
montgomery, mo USA - Thursday, February 17, 2000 at 02:41:15 (EST)

Thought I'd learnt a fair bit about PLC's over the years but this site has filled in a lot of blanks! The question and answer help section is excellent with some well informed people only too willing to help if you're in a mess. Keep up the good work!
Richard Hughes <richard@dickndell.freeserve.co.uk>
Bradford, U.K. - Wednesday, February 16, 2000 at 07:41:01 (EST)

I have passed you link on to many people that haven't had the oppertunity with PLC's you've had. It's good to find a resource from someone willing to help. I wish I'd found a site like yours 20 years ago. I'd have more Narly Software than I do now.
Clifford Jones <CJones@narlysoftware.com>
La Habra, ca USA - Sunday, February 13, 2000 at 18:06:42 (EST)

Great to know that such informative site exists. I'm a Maintenance Engineer having exposure to PLC's (Allen Bradley, Siemens) for around five years. Would be happy to seek and share knowledge on PLCs. Sreekanth Menoth Maintenance Engineer Ashok Leyland Sipcot Phase II Hosur - 635109 Tamil Nadu INDIA
Sreekanth Menoth <skm@alh2.global.net.in>
Hosur, Tamil Nadu India - Wednesday, February 09, 2000 at 01:19:50 (EST)

ost excellent site. I am so glad to see someone willing to share their knowledge ratherthan hide it. I have been a Research and Development engineer for a high tech induction heating company for almost 5 years, this information is the best I have seen so far. Myself and several other engineers are working on a new sites that teach AC/DC electronics and CAD drafting. I will post a link to the extensive CAD library of PLC code and symbols that will be available shortly. I hope my site will be as useful to others as your has been. I have sent your address on to the rest of my associates, I think they will be impressed.
Chris Marker <Scrubba565@yahoo.com>
Gadsden, Al USA - Tuesday, February 08, 2000 at 21:26:53 (EST)

I have found your site very helpful as I am curently doing plc labs at BCIT in Burnaby BC as a part of my electrical apprenticeship schooling. I'm starting to finally understand this stuff. tha
Bruce McClymont <buddha@uniserve.com>
Gibsons, bc Canada - Saturday, February 05, 2000 at 21:15:22 (EST)

Add your comments here Nice work (and great animations for us abc impared humans) THANKS A MILLION I will spread your gospel
D Duffin <te@safelink.net>
declo, id USA - Friday, February 04, 2000 at 23:53:09 (EST)

Too bad I didn't find this site earlier it would have made my life that much easier. My company has decided to build our own pannels for our overhead cranes, before I checked out this web site I could barely keep up when clients were talking about them, now I am able to give input to our engineer. Thanks!!!
Jennifer George <Jenniferg@swl-crane.com>
Brampton, ON Canada - Wednesday, February 02, 2000 at 14:48:18 (EST)

I knew nothing when I was asked to do a project requiring a PLC. Within 2 days, I felt comfortable. Thanks for the help.
Bill L <wcl1@cec.wustl.edu>
St Louis, MO USA - Wednesday, February 02, 2000 at 12:05:15 (EST)

Thank you for an outstanding web site. There was more info here than any other site. Beginners and some of us old farts should be able to use the information here to great advantage.
Robert Soby <dad1@tds.net>
Paonia, CO USA - Tuesday, February 01, 2000 at 12:40:19 (EST)

Very nice... I've needed a place to learn more about PLC programs... Keep it Up... Hoo-yah...
Ethan E. Highsmith <eehi@hotmail.com>
White Oak, Ga USA - Saturday, January 29, 2000 at 00:00:57 (EST)

Wow, what a site!!! I attended a seminar about PLC fundamentals some years ago and I want my money back. This site did more for me in one day than two days at a seminar. Thanks for your hard work.
Matt Carlson <carlsonm@gsilumonics>
Simi Valley, CA USA - Thursday, January 27, 2000 at 19:41:05 (EST)

your site came highly recommended by my instructor at the local community college. i plan on using your site to supplement my course work.
Bob Sherwin <rfsher@msn.com>
USA - Tuesday, January 25, 2000 at 21:58:56 (EST)

Add your comments here This PLC tutor Tech info is exhaustive and it would be nice if you could create this in PDF Acrobat format
Girish Phatak <techin@vsnl.com>
Mumbai, India - Wednesday, January 19, 2000 at 09:21:30 (EST)

great tutorials especially if a workbook type of solutions is included.Thank You very mich by the way.
Zainal Bin Jaffar <jenol_71@yahoo.com.sg>
USA - Monday, January 17, 2000 at 11:24:05 (EST)

A SPLENDID SITE !!!!! A chat room would be another good addition, and not one single room, but every room for a specific brand of PLC. Also creating a sort of Workbook would help us newbies.
Mohammad Jamil <mjamil@mailcity.com>
Karachi, Pakistan - Friday, January 14, 2000 at 06:42:11 (EST)

Add your comments here New to PLC`s. found your site interesting. I am about done with my fourth lesson. will comment better when I complete the tutorial. Glad you are out there.
Edward M. Augustine <eaugust@bellsouth.net>
Birmingham, AAl USA - Thursday, January 13, 2000 at 19:52:52 (EST)

I'm a student currently working at a power supply company. I'm undertaking a project to develop a test rig to test control panels. I've never had any exposure to plcs before and I was a little concerned about my lack of knowledge of plcs (not just programming them, but what they are and how they work). Fortunately I found this site and now I think I know enough to be able to get on and finish my project! Thanks heaps.
Joel Wise <jk.wise@student.qut.edu.au>
Brisbane, Queensland Australia - Tuesday, January 11, 2000 at 20:34:38 (EST)

This is probably the best site in the world. It has a certain quality that is sadly lacking in other plc sites, namely info that can be understood (sometimes). I have spent countless seconds studying these plc's when I realised there must be an easier way, and praise be to the almighty logic controller in the sky there is. I have seen the light, it is a warm and welcoming light that is spreading acrosss the land. And when my plan is complete I shall reward those who have asssisted me in my quest. That quest at the moment remains unknown to everyone including myself. Seeing that it is such a miserable shitty day here in the quaint and magical land of Ireland I think I will go and get violently drunk and sort out that gang of leprechauns that stole the front wheel off my bicycle... SLAN
mike "begorrah" walsh <mwalsh72@oceanfree.net>
Ballybunion, Ireland - Friday, January 07, 2000 at 11:07:40 (EST)

A very informative site.. found every thing in one go.. do you know of any plc simulation programs to put your theory to practice ?????
Aub Laing <aub.laing@iluka.com>
Bunbury, WA Australia (the only place to be) - Thursday, January 06, 2000 at 03:01:07 (EST)

Add your comments her Excellent site, I tried this site before any others but I got all the information I wanted first go.I particularly liked the Tutor Animations,a nice touch....
Dave Shaw <davidshaw@tinyonline.co.uk>
Barrow-in-Furness, Cumbia UK - Sunday, January 02, 2000 at 18:38:48 (EST)