Ykee, Thanks for the tip. his seems like the simplest way to do it. I could not find anything with 4-20ma control on the website but I will contact the company tomorrow.
Thanks form all the replies. What should I expect to pay for this. I spoke to someone about LOGO! They said the cost of the hardware and programming would be about $2000. Im still waiting on an official quote.
I am new to PLC's so please explain in detail what I need and who to buy from. I grow microalage and need a PLC to control illumination based on the density of the microalgae
I will try to exlain.
I would like purchase a PLC that will communicate with an optical density probe. The optical...
