PLC Training - Introduction to PLC Ladder Logic, Part 1

Introduction to PLC ladder logic programming training video. This educational video is an introduction to what ladder logic is and how it works. (Part 1 of 2)
More videos are available on http://www.PLCMentor.com by http://www.AutomationNC.com

Category:

Howto & Style

Tags:

• PLC
• SLC
• ladder
• logic
• tutorial
• training
• video
• industrial
• automation
• programming

[mbryan2k10]

hello,,, is it free to download?? and where could i download it,, we need that for our major

[automationnc]

@mbryan2k10 what are you wanting to download?

[Thrashaero]

ok, I'm used to M1 with the circle symbol meaning a meter, and M1 with the parallel lines on the conductor meaning a capacitor......what is this separate school of symbols?

[automationnc]

@Thrashaero Yes, the symbols you mention are electronics symbols. There is a whole different accepted symbol library for electrical drawings and another set for instrumentation.

[josepep]

and part 2 is...

[automationnc]

@josepep part two is on the PLCMentor website.

[automationnc]

@MYTOWER Overloads should be hardwired into the motor start circuit. On a rare occasion (maybe once or twice in the last 25 years) I have had a client that is willing to pay to have a separate contact brought into the PLC. Since the costs on all systems are limited, there is usually more important information that people are interested in seeing. I dont think I included it in my motor circuit example, but I didnt want to confuse someone that is just figuring out what a seal in is.

[MYTOWER]

I have noticed you dont show any overload relays that are on most motor starters

and how they play in your start stop circut.

Thanks

Mtower

[automationnc]

@stalinwasright The best way to get involved with PLC's is working with the real thing. Rockwell also has a freebie programming package and emulator that work well. We have links and details on our PLCMentor site. The best way to learn programming is by programming PLC's or otherwise; however there are many wrong paths that can be taken so I suggest finding a knowledgeable mentor at work or we have designed our site to help fill that role.

[automationnc]

@nobodysfool454 Oh and something I guess we can agree on. I would never hire some "bonehead" because he has a degree either. I wouldn't hold it against him either.