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Using pics for machine control (by crank)
I have being going through some of the lessons on this site www.atmalz.com . and wondering if it is okay to use ldmicro in development of industrial machines . I felt like it will be easier to write programs into micro controller than running wires.But I'm not sure how safe it will be.
(no subject) (by MGP)
Use a industrial PLC (like Logo, Easy...etc) it's much safer if someone else uses these machines.
In many countries, you are responsible for your product.
It is probably even cheaper.
Ldmicro is good for personel use or to be used in products where no one can be hurt if something goes wrong (displays, toys, hobbyproducts, measuring devices ....etc) .
But that is my opinion.
(no subject) (by Ihor Nehrutsa)
You are responsible for your product in any way.
1) You must provide for your hardware product quality power supply, protection against electrical noise, protection from vibrat and dirt, proper temperature and humidity conditions ets.
In the industrial PLC, these requirements have been largely taken into account. When we are dealing with a bare microcontroller, you have to ensure compliance with these requirements.
2) You have to write reliable software for industrial PLC or microcontroller.
Novice fairly easy to develop and maintain(support) a program with LDmicro.
You are responsible for your product in any way.
P.S. I would not dare to use in medicine, in hazardous processes. I'm not worried about the LDmicro, I fear for the hardware.
But that is my opinion.
Hello friends. (by Magno Medeiros (Brasil))
Hello friends.
LDmicro discovered in late 2010 and since then I've been using this wonderful program in the industry that work and I can assure that I never had serious problems.
I make my own CLP`s, optical sensors, thermal, timers, and rotation monitors. and it has worked satisfactorily.
Until now there was time when I was in doubt whether a defect would be software or hardware, but I confess that I believe more in the software. As some have suggested, mainly seemed to me to be more likely any hardware failure.
Anyway, I let my true testimony that we are careful with the use and considering that in the industrial environment there are other protection features, LDmicro has shown excellent in these 5 or 6 years that I have used.
Attached some pictures of the industry where I work.
cont... (by Magno Medeiros (Brasil))
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(no subject) (by Alex)
To Magno Medeiros
Do you use the official 2.3v or the unofficial stable 3.5.4v ldmicro software and do you use microship or atmel? Thank you very much for your testimonial
(no subject) (by Joan)
Hola amigos,
Como técnico electrónico industrial y de sobrada experiencia, creo que es muy inapropiado y peligroso el uso de LDmicro en el área industrial, por lo menos si apreciamos el valor de las personas.
Un PLC industrial, jamás tendrá fallos de funcionamiento, es decir, o trabaja según lo programado o no funciona, LDmicro puede tener perturbaciones y presentar fallos que podría ocasionar peligro para las personas que estén cerca de la máquina.
Por seguridad, no lo recomiendo.
Saludos.
(no subject) (by Alex)
Well; a total opositte testimonial; but Joan may be right
(no subject) (by Jonathan Westhues)
Neither LDmicro nor standard PLCs should be used in any application where failure might cause danger to human life. Such circuits--for example, an emergency stop button, or a safety interlock--should always use dedicated hardware, and that hardware should be redundant or highly reliable.
In applications where failure might cause damage to property, it's just money; so use your judgment. If a failure might break a $50 tool, then I'm less worried than if the failure might flood my house. Of course, LDmicro has no warranty; but even if your PLC has a warranty, it almost certainly doesn't cover that either.
It's not impossible to use software in safety-critical systems, like by running multiple redundant copies of your software on multiple processors, or using special "safety PLCs" already built with internal fault-tolerance. That's just tricky enough that it's not usually the right solution.
(no subject) (by Magno Medeiros (Brasil))
Hello friends,
As the Jonathan Westhues made clear, a PLC built by ourselves and using LDmicro may be faulty, as well as any other PLC even if some recognized brand.
Here in Brazil we have a large manufacturer (WEG) that I use as well, and even being a known brand also is not free is defective.
I replaced over the years PLCs weg by these I do, and as I said the machines are working satisfactorily.
While a PLC weg cost more than US $ 1000.00 my cost is around US $ 100.00. So until now I have more reasons to use than no use.
I finish making it clear that I am not recommending anyone to use their own hardware or LDmicro. but I just let my statement that actually use LDmicro without major problems.
For those interested I use the Atmel microcontrollers.
PLC (by SEGAR)
Hello Friend
past 3-years ago i have develop using LdMicro PLC in the renewble energy control system for solar charging system for my one of friend its working well until now without any problem ,i am use PIC16F876A Chip SOIC Package. but in the hardware circuits i have designed some protection circuits OVP,OCP,OTP this protection for PCB driver. in the software i not see any interruption or malfunctions , its working as normal uC as well.
This i just share the information as well ,i would like to try develop for the Automation Industry in coming few months testing of reliability and life time, this projects for Color Coding Detection Project.
MANY THANKS TO Jonathan Westhues
THANKS YOU
PLC (by Alex)
great testimonial, what about the WDT? did you use it in your project? (if yes, hardware or software WDT?)
PLC (by SEGAR)
well i not use WDT as well, just standard programing use LDMicro
software to do job. its excellent results .
Thanks
(no subject) (by Alex)
Thanks for your answer; do you use microship or atmel? and ; which ldmicro version do you use for your projects?
PLC (by SEGAR)
For the microchip i use PIC16F876A and the LdMicro software version i am use old version 2.3 its working good as well .
its really good this software for the developer or designer to create projects. IF HAVE MORE FUNCTION LIKE SPI,I2C support in ldmicro its will be excellent tools
thanks
(no subject) (by Alex)
i see, thanks for your answer and yes, SPI and I2C would be an excellent tool.
(no subject) (by Andre Luiz Brazil)
ola magno medeiros pode entrar em contato comigo
[email protected]
(no subject) (by Andre Luiz "( Brazil )")
Bom amigos, como tópico menciona usa do LDmicro me surgi o uma duvida.
Ha uma maquina que usa um rele de segurança para botão de emergia, cortando a alimentaçao de 24 volts do circuito parando tudo.
Ha outro rele de segurança para as portas ao abrir elas o rele desliga tudo também.
e um clp que também recebe o sinal deles também desligando e sinalizando.
Sera que hoje em dia esse é o melhor sistema deixando tudo separado ou apenas com um clp podemos eliminar esses rele de segurança.?
(no subject) (by Alex)
amigo, talvez você poderia usar o tradutor
(no subject) (by Magno Medeiros (Brasil))
Olá André Luiz, respondi o email como vc pedio. e quanto ao seu questionamento, eu sugiro que use a botoeira de emergência para desligar a tensao principal do commando que alimenta a fonte de 24v do CLP e os contatores.ex: linha de 220v ou 110v.
Hello André Luiz, said the email like you Pedio. and as to your question, I suggest you use the emergency pushbutton to turn off the main commando tension that feeds the source 24v PLC and contatores.ex: 220v or 110v line.
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