PLC, an abbreviation for Programmable Logic Controller, is an industrial computer system. It continuously monitors the state of its inputs and makes decisions on the state of its outputs based on a control program stored within it. Nearly every production line, industrial machine, or any type of industrial process can be significantly improved using this type of control system, which is why programming PLCs is highly important. However, the greatest advantage of using a PLC is its ability to change and replicate operations or processes while collecting and communicating information. Another advantage of the PLC system is its modularity. This article focuses on examining PLC programming services.
.Today, PLCs are widely used in industrial automation design and play a vital role as the beating heart in many industries
The use of PLCs has eliminated much of the conventional wiring found in relay-based control circuits. Other advantages of using PLCs over relay-based systems include: easy installation and programming, short response time, high control speed, networkability, simple testing and troubleshooting, and the high reliability of these systems.
Faryan Automation Company has over 10 years of experience in providing Siemens PLC programming and automation control systems. Over these years, we have designed, installed, and commissioned various control systems using Siemens PLCs in diverse industries. Our team has programmed and supported various PLC models, including the S7-200, S7-1200, and S7-1500. Utilizing software such as Step 7 and TIA Portal, along with the relevant communication interfaces, we are capable of providing comprehensive services in the field of industrial control systems.
Siemens PLC Programming Services encompass a range of activities and expertise in industrial automation using Programmable Logic Controllers (PLCs) from Siemens. These services can include the following:
With over a decade of experience as a Siemens PLC programmer, Faryan Company operates as a pioneer in industrial automation and a specialist in PLC and industrial control systems in Iran. Relying on our expert team and executive experience in major industries, we provide the following comprehensive and customized services:
Design and Implementation of Control Programs
Based on the specific industrial process (e.g., production lines, packaging, material handling, water treatment plants, etc.)
Using Siemens software such as:
TIA Portal
STEP 7
WinCC (for monitoring and HMI)
What you need to install a Siemens PLC system:
Siemens CPU module (e.g., S7-1200 CPU 1214C)
۲۴V DC power supply
Network cable or USB cable for computer communication
TIA Portal software for programming
Sensors, switches, relays, and motors (for I/O)
Troubleshooting existing programs
Resolving issues with industrial network communications (Profibus, Profinet, Modbus, etc.)
Replacing old PLCs with new models like the S7-1200 or S7-1500
Converting programs from classic STEP7 to TIA Portal
Designing Siemens HMI screens (e.g., KTP, Comfort Panel)
Designing SCADA systems with WinCC for complete process monitoring
Using complex functions, modular programming, Structured Text (ST) language
Working with PID controllers, counters, timers, motor and drive control (SINAMICS, MICROMASTER)
Our technical team provides the client with necessary training on working with Siemens PLCs, including solutions and resolving potential issues.
Providing complete documentation and technical support
S7-200 (Legacy)
S7-300
S7-400
S7-1200
S7-1500 (Modern)
Siemens SINAMICS drives are a family of motor speed controllers designed for various types of AC and DC electric motors. These drives can precisely control motor speed and torque, leading to improved efficiency and reduced energy consumption. They are among the most advanced motor control systems in the industry, widely used due to their high performance and precise adjustability.
SINAMICS V20: Suitable for simple and economical applications with basic settings and quick startup.
SINAMICS G120: More advanced with broader capabilities for complex industrial applications.
Executing an industrial PLC project by Faryan Company is a structured, engineered, multi-stage process involving needs analysis, design, programming, implementation, and support, carried out in the following order:
Our technical team is dispatched to the factory or project site to:
Review industrial processes, machinery, and control requirements
List input/output (I/O) points
Analyze environmental conditions (temperature, humidity, noise, IP rating) for selecting suitable equipment
Identify safety standards and industry requirements (e.g., oil & gas, automotive, food)
Output of this stage: Requirements report and overall process diagram.
Based on the requirements report:
The PLC brand and model are selected (e.g., Siemens S7-1200, S7-1500, S7-400)
The quantity and type of digital/analog cards, communication modules are determined
The required software is specified (e.g., TIA Portal for Siemens)
Preliminary design of the control panel, terminals, relays, and power system is done
Output of this stage: Electrical diagrams and Bill of Materials (BOM).
The programming team, according to the process needs:
Selects the appropriate language (LAD, FBD, STL, or SCL)
Implements the process control logic (including Start/Stop, PID, Sequence Logic)
Tests and simulates the program using TIA Portal tools
Designs and implements HMI or SCADA if required
Output of this stage: Complete, simulated PLC code and HMI/SCADA.
In this stage:
Power and control panels are assembled according to the diagrams
Internal panel wiring and equipment installation on rails are completed
The system is transported to the project site and connected to field devices (sensors, motors, valves, etc.)
Industrial network connections (PROFINET, MODBUS, EtherNet/IP) are set up
Output of this stage: Complete hardware system ready for commissioning.
In this critical phase:
Input/Output (I/O) checks are performed
The actual process is executed step-by-step with the operator
Final adjustments are applied (PID Tuning, parameter changes)
User training is conducted and complete technical documentation is provided
Output of this stage: Fully operational system approved by the client.
After handover, Faryan Company is committed to:
Resolving potential issues during the warranty period
Updating software as needed
Providing supplementary training
Enabling future development or changes to the control logic
Output of this stage: Long-term system stability and customer satisfaction.
Professional PLC project companies do not limit themselves to just programming; they provide a complete, structured, and traceable process for design, execution, training, and support. This professional structure gives plant technical managers confidence that the project will be executed with the highest productivity, lowest risk, and future scalability.
Executing a PLC project by an industrial automation company requires precise planning, technical expertise, and effective collaboration between different teams. By following the steps above, it can be ensured that the control system operates optimally and reliably, effectively meeting industrial needs.
