Wiring and programming the analog input of a PLC (Siemens S7 1200) for process control (hands-on)
In this section, we are going to dig deeper into our PLC wiring and programming by learning how to wire and program the analog input of PLC to control a process. Analog programming is often seen as the complicated aspect of using a PLC. I have made it simple and easy to understand here. The practical part (hands-on) will give you a better understanding. While every part of this book is important, in particular, Chapter 7, Understanding PLC Hardware and Wiring, Chapter 8, Understanding PLC Software and Programming with TIA Portal, and Chapter 9, Deep Dive into PLC Programming with TIA Portal, are all required to easily understand this section.
There are specific controllers designed for temperature control – for example, the JTC903 controller used in the previous section for temperature control. We also have controllers designed specifically to measure pressure or level. However...