Towards Industry 4.0 — #6 Field Devices, Processing Analog Inputs with Siemens S7–1200

The Digital Transformation Journey to Industry 4.0 starts by understanding Industry 3.0

Andi Sama — CIO, Sinergi Wahana Gemilang with Cahyati S. Sangaji

In Summary
- Implementation of "Processing Analog Input" in Industrial Automation using Programmable Logic Controller (PLC).
- Two types of analog inputs: 0-10VDC, 0/4-20mA.
- PLC Hardware: Siemens compact PLC S7-1200 DC/DC/DC.
- Software tools: Siemens TIA Portal on Windows.
- Programming Language: Ladder Logic Diagram.
- PLC supporting files (Siemens S7-200) are available on Github:
  * 0-10VDC, https://github.com/andisama/PLC-Analog-Input-Processing--0-10VDC
  * 0/4-20mA, https://github.com/andisama/PLC-Analog-Input-Processing--0-4-20mA

In our first series of "Towards Industry 4.0" (late 2022–early 2023), we discussed various things covering some of the technological developments on the journey towards Industry 4.0, the convergence of Information Technology (IT), and Operational Technology (OT).

In those five articles (six, including a summary) — listed in the reference section in this article, we discussed the industrial automation technology driven primarily by Programmable Logic Controllers (PLC) since the beginning of Industry 3.0, along with its surrounding technologies. Field devices such as various sensors and actuators like pneumatic, hydraulic, and motors are examples of that surrounding technologies.