Modification & Review of Existing Siemens PLC Program (TIA Portal V20)

@hayteekeys

Hi, I can implement the logic modifications and HMI updates for your S7-1200 (CPU 1212C) system in TIA Portal V20, ensuring all changes are seamlessly integrated into your operational machine. MY APPROACH - I will perform a full project audit, reviewing all PLC blocks, HMI screens, and your specific change document to understand the existing architecture. - I will implement the required logic changes, ensuring strict adherence to your requirements while maintaining existing interlocks and safety protocols. - I will verify cross-functional stability, checking that Auto, Manual, and Safety modes remain conflict-free after the modifications. - I will optimize the code structure, adding clean comments and ensuring the project remains maintainable and well-organized. - I will perform the remote installation, connecting to your PLC and HMI to deploy the updated program and verify live operation. DELIVERABLES 1. Updated TIA Portal V20 Project File (PLC + HMI) with clean, commented logic. 2. Remote Deployment & Commissioning on your physical hardware. 3. Summary of Changes confirming each requirement from your document was met. EXPERIENCE I have extensive experience with Siemens S7-1200/1500 and TIA Portal, specializing in modifying live industrial programs, temperature control loops, and complex interlock logic. Ready to review the files and start immediately.

@rashidamjad

Pitch: As someone who has been passionately immersed in the PLC world for over 5 years, I assure you that your project is in capable hands with me and my team at Rashid Tech Solutions. We have extensive experience with Siemens TIA Portal V20 and are more than familiar with the S7-1200 PLCs that power your machines. What sets us apart from other candidates is our proven track record of successful projects centered around modifying existing industrial programs, not just new development. We appreciate the intricate nature of retrofitting and working within established systems, ensuring zero disruptions to already operational machinery. Understanding your project requirements inside out is crucial and for that reason, we commit ourselves to thoroughly reviewing your program file, examining all PLC blocks, HMI screens, and carefully understanding the documenting changes mentioned by you. This meticulous inspection guarantees we will implement modifications properly and avoid any conflicts with existing blocks or interlocks. Our expertise doesn't end at programming; we possess a deep understanding of structured logic, interlocks, temperature control—a skillset necessary for troubleshooting automation effectively.

@mzlst50

Hi there, We are CanadaTronix, Auomation company based in Canada. I am the CEO of the company and an automation specialist for 15 years, with hands-on PLC programming in many brands, of which Siemens is considered my core experience. I have gone through the chnage descriptions by which you made the requirements very determined and cleared. Please see dozens of completed projects with excllent clients reviews and great feedback. I can share with you many projects samples that shows our experience and cleints reviews. Regards, Dr. Yasser E

@engabdo172

Hello sir I'm PLC programmer with 10 years of experience in the automation field I have good experience with Siemens PLC and Hmi and I do alot of jobs using it I have Tia portal v20 installed on my PC I read the job description and I am ready to do it from now Please contact me for more detailes I hope we can work together Best regards

@mmalymm

Dear, I have experiance and knowledge with Siemens PLC's. I can fix all problems existing in the project. If Yoa are interested please chat to me. BR Marcin

@Hachemked

Hi, I understand this is a running machine that requires precise modifications without disturbing existing logic. I have strong experience with Siemens TIA Portal (including V20) and S7-1200 CPU 1212C, especially in modifying and troubleshooting live industrial programs. My approach: • Open and fully review all PLC blocks (OB/FB/FC/DB) and HMI screens • Carefully analyze the document listing required changes • Understand the complete operational sequence before editing • Implement logic updates cleanly without affecting existing interlocks • Verify Auto / Manual / Safety modes after modification • Provide a structured, well-commented updated project • Perform remote download and testing on PLC and HMI I’ve handled similar Siemens projects including batching systems, temperature control processes, servo coordination, and interlocked automation where stability and safety were critical. As requested, I will review the full project files before quoting. Best regards, Hachem K. Siemens PLC Engineer | TIA Portal

@sakshis576

With my vast experience in electrical engineering, I can confidently say that I would be an excellent fit for your project. My deep knowledge of Siemens TIA Portal V20 and S7-1200 PLC programming will ensure that your existing program is thoroughly assessed and all required changes are implemented correctly. Having handled numerous such projects in the past, I have a keen understanding of structured logic, interlocks, temperature control, and automation troubleshooting – all areas crucial to the successful modification you're seeking. Moreover, my proficiency in handling existing industrial programs, as opposed to just new development, instills confidence in my ability to navigate around conflicts and ensure a seamless transition for your machine. Additionally, I bring an eye for detail to the table. I'll not only ascertain that the modifications are accurately implemented but also verify that all modes - Auto/Manual/Safety logic - behave appropriately even after the changes are made. You can rest assured with me handling your project; all changes will be well-documented via clean project files. Let me put my skills to action for you remotely on your PLC and HMI - I have a penchant for exceeding client expectations!

@Ussama91

I will review the existing PLC and HMI project, implement required logic changes, ensure no conflicts, verify modes, and provide the updated project file with clean structure and comments, then install the program remotely on PLC and HMI, adapting to the proposed budget, with strong experience in Siemens TIA Portal V20, S7-1200 PLC programming, and handling existing industrial programs. Waiting for your response in chat! Best Regards.

@yabut3530

Hello, I can help with your TIA Portal V20 modifications for S7-1200 CPU 1212C + HMI, focusing on safe changes that don’t break existing interlocks or modes. How I will work (as you requested): Open and fully review the PLC + HMI project (all blocks/screens). Locate and study the “required changes” document inside the files. Implement the logic updates cleanly (FB/FC/OB structure), keeping existing sequences intact. Verify Auto / Manual / Safety behavior and confirm no conflicts with current interlocks. Add clear comments where needed and keep the project organized. Deliver the updated project file. Support remote download/commissioning on PLC + HMI. Experience: I’ve worked on Siemens S7-1200 projects involving retrofits, troubleshooting, interlock corrections, temperature/process control, and HMI updates—especially where the machine must stay operational during revisions. I understand you don’t want a blind quote. Once you share the project files, I will review them first and then provide an accurate estimate (fixed price or hours) based on the real scope. Ready to start immediately.

@engrhasan01

Hello, I’m an electronics engineer with expertise in automation with strong hands-on experience in Siemens TIA Portal (V15–V20), S7-1200 PLCs (including CPU 1212C), and integrated HMI development. I regularly work on modifying and troubleshooting existing industrial programs, not just new builds. I understand that quoting without reviewing the actual project is not acceptable. I will first open and fully analyze the PLC blocks (OB/FB/FC/DB), review the HMI screens and tag mapping, and carefully check the document listing the required changes. Only after understanding the current logic structure, interlocks, Auto/Manual modes, and safety handling will I provide a precise quote. I will implement the requested logic modifications cleanly, ensuring: • No conflicts with existing interlocks or protections • Stable behavior in Auto / Manual / Safety modes • Proper alarm and temperature control logic integrity • Clean structure and meaningful comments where required I can also handle remote installation and commissioning support via secure remote access. Recent similar work includes modification of S7-1200 based temperature control systems, interlock restructuring in packaging machinery, and HMI redesign within existing TIA projects.

@navinashash

Im navin here , 9 years EXP in automation and PLC sector with handling more than 45 + projects per year

@sandipm1307

Having worked extensively with Siemens TIA Portal V20 and S7-1200 CPUs, I am well-versed in all aspects of your project requirements. My deep understanding of structured logic, interlocks, temperature control, and automation troubleshooting will ensure that every modification and correction is implemented flawlessly, with no conflicts or issues arising. In fact, my prior experience is not just limited to handling existing industrial programs; I have also excelled in modifying them for maximum efficiency and reliability, so this assignment feels like a perfect match. My specialty lies in transforming the functional intricacies of PLC programming into user-friendly HMI screens. Not only will I be able to meticulously implement your specific changes mentioned inside the project files; I will also review the entire project, providing clean structure and essential comments where required for better future understanding. This holistic approach to system integration is critical for harmonizing functionality and minimizing downtime during updates. My previous Siemens projects centered around improving automation processes, reducing manual work, and optimizing system performance.

@Belkin991

Hi! I can complete these tasks quickly and efficiently. I have over 15 years of experience working with Siemens PLCs and HMIs. If you need examples of previous work, I'll be happy to provide them.

@vishnus0608

I am excited to apply for the PLC Programming project in Siemens PLC System. With over 17 years of experience in a world class Engineering and Manufacturing company in the field of Electrical and Automation Engineering, I bring a wealth of expertise in designing, programming, and optimizing control systems for diverse industries like Water treatment, Steel Plants, Power Plants, Steel rolling mills, Mines etc. Highlights of my qualifications include: *Extensive hands-on experience Detailed Electrical & Automation Engineering, *PLC, DCS, SCADA, HMI, Intelligent Motor Control Center, VFD Drives, Instrumentation *Rockwell(Allen Bradley) PLC -Studio5000,RS Logix5000, RS Logix500, Factory Talk *Siemens PLC - Siemens-TIA Portal, PCS7, WinCC, *Schneider PLC-Ecostruxure Process Expert, Aveva Plant SCADA, Schneider-Unity Pro XL, Vijeo Citect, *ABB PLC-Control Builder *Automation Direct - Productivity PLC, Click PLC, C-more HMI *Intelligent Motor Controllers IMC (Siemens Simocode, ABB UMC100) *Industrial Communication Protocols (Profibus-DP, Profibus-PA, Modbus-TCP, Modbus-RTU, Ethernet/IP, Controlnet, TCP/IP, MQTT, Serial ASCII, AT Commands) *Knowledge of C#, SQL, Python, HTML, Microsoft .NET, Visual Studio, Power BI I would welcome the opportunity to discuss how my skills and experience align with your needs. Please feel free to contact me. Thank you for considering my application. I look forward to the possibility of collaborating on your automation project. Regards, Vishnu S

@mohdabdulrazzak7

Hello, I am an experienced Automation Engineer specializing in HMI & SCADA development. I have hands-on experience in: SCADA screen development HMI design and backup restoration PLC–SCADA communication (Modbus RTU/TCP, Ethernet/IP) Alarm configuration & trending Tag mapping and troubleshooting I have worked on real-time industrial projects including pharmaceutical and manufacturing plants. I can deliver clean, professional, and fully functional SCADA/HMI screens as per your requirement. Looking forward to working with you. Best Regards, Mohammad Abdul Razzak

@hafz1977

I have received and reviewed your TIA Portal V20 project file (.zap20). After analyzing the structure, stage sequencing logic, Next_stage_Bits handling, and interlocks, I clearly understand the required Auto Cycle corrections. The modifications involve: • Adding Stage_Mode (HEAT/COOL) per recipe stage • Preventing wrong restart stage advancement • Proper reset of Next_stage_Bits and stage memory • Implementing true hysteresis everywhere • Hard recirculation interlock for heating/cooling outputs • Using Min/Max bottle temperature correctly per mode • Separating stage completion from pit low-level logic • Enforcing Auto priority over Empty Chamber • Correctly enabling/disabling M1 PID based on Heating_Enable AND Recirc_Running I have strong experience with S7-1200, structured stage-based automation, PID control, and modifying running industrial systems without disturbing safety logic. I will implement clean, structured changes, verify Auto/Manual/Safety behavior, and provide a well-commented updated project. Remote commissioning support is included. Best regards, Hafeez Ur Rehman

@JuanGC86

I have carefully reviewed your requirements for modifications to the existing Siemens S7-1200 PLC and HMI program. With extensive experience in TIA Portal V20 and industrial automation, I can complete this work efficiently within a few hours. Relevant experience: · 6+ years programming Siemens PLCs (S7-1200/1500, S7-300/400) · Multiple machine modification and retrofitting projects · Complex temperature control systems implementation · Safety logic integration and validation · Remote commissioning and troubleshooting I confirm that I will: 1. Thoroughly review all project files (PLC blocks and HMI screens) 2. Analyze the document with required changes 3. Understand the current logic including interlocks and safety functions 4. Implement modifications without creating conflicts 5. Test all operating modes (Auto/Manual/Safety) 6. Deliver clean, commented code 7. Remotely install and verify the updated program My approach: · Create a backup of the existing project first · Document all changes made · Test modifications in simulation before online installation · Verify machine behavior remotely after installation Please share the project files and I will begin reviewing immediately. I can provide a fixed quote after a quick initial assessment of the required changes. I look forward to your reply. Best regards

@sumanswapnil20

Hello, I am a Senior Automation Engineer with 10+ years of industrial experience in Siemens PLC, HMI, and SCADA systems, with strong expertise in Siemens S7-1200 and TIA Portal environments. I specialize in handling existing running machines where careful logic review, modification, and troubleshooting are required without affecting current production. I have worked extensively on modification and correction of existing PLC programs including interlock handling, sequence corrections, temperature control logic, and optimization of machine operation. I understand the importance of reviewing the complete logic structure before implementing any changes to avoid conflicts with existing functions or safety conditions. For this project, I will first review the complete PLC and HMI project files, understand the current implementation and the required changes mentioned in the documents, and then implement the modifications in a structured and safe manner. All modes (Auto / Manual / Safety) will be verified after modification. The final project will be delivered with clean structure and proper comments for future maintenance. I also have experience in remote support and online modification of Siemens systems, ensuring smooth implementation with minimal downtime. I am confident I can complete this work professionally once the project files are reviewed. Thank you.