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I am currently trying to program a Siemens S7-300 PLC (CPU 313) for PID control using FB 41. Where can I find more examples and more details on how to use FB41.
I have tried to run the controller_update.pdf which I have downloaded from the PLCArchive section on my PLC. I have no problems compiling the source code. However, when the program was downloaded and run on the PLC, the PLC SF Software Error LED was turned on.
I tried to read through the manual on PID control but find it hard to understand the explanation.
Essentially, what are the important inputs and outputs parameters that I should take note. I am only interested to design a single input and single output PID controller.
I am trying to control the input voltage to a valve using the controller in order to control the temperature of a reaction vessel.
Any advice on the above would be greatly appreciated. Please feel free to email me at pwdt2002(AT)yahoo.com if you could offer me any help.
Thanks and wishing all of you at Control.Com Merry Christmas and a Happy New Year.
I have tried to run the controller_update.pdf which I have downloaded from the PLCArchive section on my PLC. I have no problems compiling the source code. However, when the program was downloaded and run on the PLC, the PLC SF Software Error LED was turned on.
I tried to read through the manual on PID control but find it hard to understand the explanation.
Essentially, what are the important inputs and outputs parameters that I should take note. I am only interested to design a single input and single output PID controller.
I am trying to control the input voltage to a valve using the controller in order to control the temperature of a reaction vessel.
Any advice on the above would be greatly appreciated. Please feel free to email me at pwdt2002(AT)yahoo.com if you could offer me any help.
Thanks and wishing all of you at Control.Com Merry Christmas and a Happy New Year.