Boobo-oobo

NP, but i need to do this with a PLC. So, i buy those sensor units, and connect them to my PLC. What type of data about the temp do i get from the unit? Do i get lets say a integer/float value of the temp, and write it in the memory?

Yes, i have to get the temp. reading. So this method doesn't cut it . . . I dont mean to be rude or anything, but i didnt ask what else could i use to solve this. I need to use the touchscreen and the PLC for this. Now, i can sell the one that i got, and buy a different one if necessary. So, as i understand it now, i would need to get a plc that has analog inputs, is there a plc that has 8 or more analog inputs? Or i need to buy expansions? Lets start with what would be a good PLC for this job. And thanks for the help so far, if any more info. is needed just ask . . .

Maybe true, but i need to control more than one plate, i think its about ~10 of them. And i would like to solve this by putting one PLC that i already have, then buying 1000$+ of new gear. So, how can i do such a thing with my plc?

I understand that there are those kind of controlers, but here they are quite expensive. And i want avoid buying those controlers, and use what i have, the PLC and the touch screen. Are you saying that this kind of temp. control is hard to do with the PLC?

The PLC is only for the temp. regulation. I have to make it so that he reads the temp. and heats the plates accordingly. The program would go like this, you enter the temp you want, PLC reads current temp, then if the plates are cold, heats it up to the temp, and keeps that temp. Now my problem is how to read the temp.

Could you explain that a bit further? How would I exactly do that? To explain a bit more, i need to enter a temp. on the screen (like 180C) and the PLC has to get to that temp, and keep it that way. Are there any good examples of that?

Hi, I have a CP1L plc and a NQ3 touch screen, and need to make a program that controls the temperature of heating plates. The temp. of the plate is around 180 degrees C, and i was planing to use a NTC reisistor to measure the temp. My question is, is it possible to make such a ladder program that will control that using a NTC resistor, and could someone give me some directions to how to make such a program, cause i have little knowledge about this kind of thing, I know how to make simple ladder programs, but this is a bit more complex. Can the plc directly measure the analog value of the temp with the NTC resistor, or it needs some kind of an device to do that? Dont know if you need any more info. about all this . . . Thanks, Marko.