What is the difference between Programmable Logic Controllers (PLC) training and Distributed Control System (DCS) training?  30 years back DCS was mainly used for operating Large Chemical Plants and Refineries and PLCs were historically used for controlling small units such as a compressor or a turbine.  With the technological developments in the computer technology over the last three decades, the true difference between DCS and PLC has come down drastically, however, major DCS vendors still selling their products to large chemicals industries due to their extensive features.   If a student wants to become an automation engineer, he/she can start with PLC or DCS, but soon they will have to know both.  However, the first job anyone interested in makes a lot of difference in this choice.  Even when you learn DCS, which DCS expertise that is most needed is a tough question.  Have a discussion with our career councillor (free of cost) to decide which path you need to take.  The following information covers the details of our DCS training for Siemens PCS7 DCS Training. 

In this course, you will learn to architecture and program Siemens PCS7 using various programming tools. If you have any familiarity with Siemens PCS7 already, this training course will help you enhance your knowledge.  We will help you structure your training based on what you know and what you want to know.   By the end of this training, a student can spec-out the system for a new plant/manufacturing facility,  complete network architecture,  install programs on a new system,  program the logic based on the functional narrative of the process, complete functional tests,  create Human Machine Interface (HMI),  verify the communications with the peripheral systems using advanced communication protocols (Modbus, OPC) commission the DCS in a test system, and will learn how to hand-over the final system to operations. 

In this training, you will also learn a part of what an Instrument Engineer must know to be a control engineer.  As a control engineer, you will interact with electrical engineers, instrument technicians, and process engineers.  This training will train you to interact with them intelligently and professionally. 

If you already do not know, this training will include basics of electrical and electronics engineering, electrical safety, wiring fundamentals, control science, and instrumentation. 


The following are the example modules covered in this training.

  • DCS function in Chemical, Petrochemical and Refineries
  • DCS main components
  • DCS  architecture
  • Control loop fundamentals and PID block
  • Integrated Self-sufficient Controllers (Analogue loop)
  • Modern Digital Control Loops (advanced PIDs)
  • DCS Electrical fundamentals – Power Requirements
  • UPS Systems for Controllers
  • How to choose DCS vs PLC
  • Siemens PCS7 DCS overview
  • Siemens PCS7 DCS hardware components
  • Siemens PCS7 DCS functional blocks
  • Siemens PCS7 DCS network interfaces
  • Siemens PCS7 DCS alarm management system
  • DCS Loop Drawing, typical examples
  • GA/IA Cabinet typical layout
  • Siemens PCS7 DCS cabinet architecture


Excel Automation Solutions Distributed Control System (DCS) training program includes following training modes:

  • Classroom and Virtual Lectures
  • Advanced Topics: Seminars and Presentations
  • Technical Group Discussions
  • Class Assignments
  • Industrial Case Studies and Functional Training Exercises

We train our students on “downloading” to the real DCS from the first class so that they can get a practical feel of their understanding throughout the course.


Employees of industries who attends the DCS training at Excel Automation Solutions benefit in the following ways.   

  • Understand the specific DCS of their plant, which is the backbone of their operations, and contribute immediately after the training to improve productivity, efficiency, and reliability. 
  • Be part of the steering committee that decides upgrades and expansion of the DCS. 
  • Train other personnel who could not attend the training.
  • Participate in new projects that need expertise in specifying the requirements, participate in vendor meetings, decide between multiple proposals on DCS from different vendors, help in automation project commissioning.


For individuals, we aim this training to be a life-changing step. 

  • Understand the principle of operation of a range of sensors and transducers used in the Distributed Control System (DCS)
  • Review the construction and operation of the most important Distributed Control System (DCS)
  • Evaluate and select the most appropriate sensor technology for a given Distributed Control System (DCS)
  • Design, build and test using a given specification of Distributed Control System (DCS)
  • Identity components and features of a Distributed Control System (DCS)
  • Optimise control by using relevant software of Distributed Control System (DCS)


Distributed Control System (DCS) training course would be suitable for:

  • Entry level Service engineers and experienced technicians in charge of operation and maintenance of instruments & control system
  • Any engineer interested in starting a career in automation
  • Engineers and electricians who want understand how the automation work for the sake of extending their knowledge
  • Mechanical and electrical graduates who want to understand PLC/DCS interfacing with external world
  • Computer science and computer system engineers who deal with real-time systems.
  • Instrument and Process Control Technicians
  • Maintenance Engineers
  • Mechanical Engineers and Technicians
  • Process or Manufacturing Operations Engineers
  • Process or Manufacturing Technicians
  • Production and Operations Manager Professionals
  • Engineers working in System Integration companies
  • Anyone who wants to understand how modern factories are automated, networked, and interfaced
  • Fresh Graduates with few years of experience in automation, control system, instrument or process control engineers

Siemens PCS7 DCS Training

At Excel Automation Solutions, we are committed to provide training to Siemens customers, channel partners, Industrial Experienced Engineers, employees as well as students in educational institutes.

1Introduction to the components of a PCS7 system both in terms of Hardware
2Communication networks and the Software including the Automation System (AS) Controller, OS/ES.
3Introduction to the PCS7 project structure, using the Engineering system (ES) Simatic Manager to showing the Plant Hierarchy, CFC, SCL, SFC and Operator Station.
4Creating a PCS7 project.
5Review of FB and FC block structure.
6Hardware configuration
7Creating CFC charts.
8Compiling, downloading and testing a project.
9PCS7 Standard library for analogue and digital I/O, motors, valves and control loops in CFC charts.
10Creating SCL function blocks, and then using them in the CFC charts.
11Sequential Control – SFC. Introduction to the concept of SFC, creating SFC, using the editing, and monitoring tools in working example. As well as step failure action, step timers, parallel branches.
12Introduction to the Operator Station – OS (WinCC HMI). Understanding the Single/multi OS and AS and the plant hierarchy. Exercise on how to build plant mimics, understanding alarms and messages and security and authorization levels.

Alarming, further information including Locks, Areas and types.

Trending, adding trending to the operator mimics.

14Fault finding, using card indication and recovery after power failure.
15PID control in CFC charts, Backing up a PCS7 system.
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