Reading via RS485 ModBus network from ESP32 the electrical conductivity value on a Siemens S7 1200 PLC

Dear [Client], I've carefully reviewed your project description and I believe I am the best fit for the job. With a versatile skill set that spans across several key areas, including holding expertise in Electronics, Microcontroller, PCB Layout, and PLC & SCADA, I can not only create the software you need to measure electrical conductivity via the RS485 Modbus network but also test it flawlessly using the Siemens S71200 PLC. Throughout my career, I've executed a multitude of projects similar to yours, which required both hardware design and firmware development. In fact, Analog and Electronic design have been my primary areas of focus thus far. Understanding specific communication parameters like 9600,N,8,1 is second nature to me as is working with Siemens S7 series PLCs. Likewise, I am extensively proficient in the embedded systems domain and have substantial experience with ESP32 as well as other popular microcontrollers such as PIC18, dsPIC etc. Moreover, my knowledge surrounding PowerElectronics and its implementations is an added advantage for your task. I have hands-on experience with AC/DC and DC-DC converters along with solar inverters - which ties in perfectly with your requirement of testing online with the acquisition system. T Best Regards, Metin

Hello, I have strong experience working with ESP32, Modbus RTU. I went through your project using esp32 to read data from SHT21 and send the data to S7-1200 via Modbus RTU. You can see my old project in my freelancer account. Thank you.

I am very interested in working on the project, my programming experience meets all the needs with the RS485 communication protocol, linked with an ESP32 SoC (Expressif) and a S7-1200 PLC (Siemens), in my development laboratory I have a PLC S7-1200, ESP32, I do not have the RS485/RTU modbus module of the S7-1200 PLC, but if you award me the project I can get one, that is why I put the offer a little higher than the budget, although we can negotiate this. I hope my offer is of interest. I am attentive to the chat to collaborate with everything you need.

If you are looking for someone to build a professional product based on WiFi connectivity and to read register values from the PLC and get them uploaded to portal or any specific application, then do not hesitate to get in touch. I have been doing this kind of PLC reading/writing over RS485 and TCP/IP Modbus protocol for many years. Product development cost may seems a bit higher than your price brackets, but here's the reason. I will design the hardware, build firmware for it as well as do the testing to ensure that it runs as expected also will provide support till the product is tested at your side and satisfied. As I have been working with PLCs for so many years, so can easily simulate the specific PLC data at my side to do the initial test. Please let me know if you are interested to have a discussion on this job. I am a pro in this field so the quality is assured. Thank you.

Best RS485 Modbus Network ⭐⭐⭐⭐⭐ Dear Paolo, After looking at the attached png, jpg and pdf files of RS485 Modbus network, I would like to share my experience and suggestions for ensuring precision in measurement and interfacing. I am thrilled to propose my expertise for your project involving reading electrical conductivity values via RS485 Modbus network from an ESP32 to a Siemens S7 1200 PLC. With over 10 years of experience in circuit and PCB design, specializing in hardware aspects, I am confident in delivering a top-notch solution tailored to your needs. Relevant Expertise: ✅ Project Example: I recently led a similar project where I integrated ESP32 modules with RS485 Modbus communication to transfer sensor data to Siemens PLCs. This involved meticulous software development and online testing to ensure seamless communication and accurate data transfer. ✅ Temperature Control Device Proficiency: I have a proven track record of designing PCBs for temperature control applications, utilizing temperature sensors and PID control algorithms. This experience is crucial for ensuring accurate conductivity measurements and precise control. Question: ⭐Can you provide more details about the existing prototype based on the ESP32 modules? ✅ Note: Please message me as I await your response and cannot message you first from my side on the platform. Warm Regards, Avi Gupta "Quality is never an accident"

A competent professional with 10 years of experience in Industrial Automation. Development of Engineering and implementation of PLC Control System, HMI and SCADA Development, testing & commissioning. ◾ PLC- Siemens- S7-1500F/H, S7-400, S7-400F/H/R, S7-300, S7-1200, S7-200, S5, TI PLC, LOGO!, Rockwell (Allen Bradley)- SLC500,MicroLogix,CompactLogix. Schneider- Zelio, M171/72 ◾HMI- Siemens-OP to Comfort Panels, Kinco,Deep-sea electronics,IFM ◾SCADA - WinCC, In-Touch Wonderware, Citect , Ignition ◾ Software- PCS7, STEP7, WinCC, WinCC-Flex, TIA portal,Protool Wonderware-Intouch, Comfort Soft, Microwin, S5-DOS,Pro-Tool, Prosave,project migration and upgrade,Codesys., RSLogix, Ecostruxure HVAC, SoMachine, Automation Direct ◾VFD- Siemens, Rockwell-AB, ABB, Telemechanique, SEW and Danfoss. ◾ Industrial Networks- PPI-MPI, Profibus, AS-i, Profinet, Ethernet, Modbus,Modbus TCP,GSD,GSDML, ◾ OPC - PC Access, OPC Scout, OPCUA,Metrikon, Kepware ◾ Project Documentation- ISA88/95, GAMP, 21CFR Part11, VP, URS, FRS, DS, IQ, OQ, PQ, SOP. ◾ Arduino, Raspberry pi,Modbus, OCR, Nextion HMI,Data Logging, Camera,Python ◾ Language - Ladder,SCL,STL,GRAPH,C,VB and C#

Dear Paolo, Are there any specific requirements or constraints regarding the physical layout or form factor of the PCB design? I have gone through the attached png, pdf and jpg files and will be able to execute this project for you. With over 30 years of expertise in electronics design, circuitry, and PCB design, I am excited to offer my services for your ESP32 module to read electrical conductivity values and transfer them via RS485 Modbus to a Siemens S7 1200 PLC project. I'm confident in my ability to diagnose and resolve the challenges you're facing. 1. I will design a robust circuit interface between the ESP32 and the RS485 Modbus network, ensuring seamless communication between the two devices. This includes selecting appropriate components and implementing necessary signal conditioning techniques. 2. I will create custom software for the ESP32 to read the electrical conductivity value and transmit it over the RS485 Modbus network to the PLC. The software will adhere to the specified communication parameters and slave address. 3. I will conduct thorough testing both offline and online with the PLC and the acquisition system as per the provided diagram. This includes verifying data transmission integrity and compatibility with the PLC's communication protocol. I look forward to the opportunity to collaborate on this exciting cutting-edge RS485 ModBus network that exceeds your expectations. Best Regards, Hari Mohan

Hi I'm an electronics engineer with 10+ years of experience, including Arduino, ESP, STM, and Raspberry. I have an S7-1200 PLC, ESP32 and an RS485 for ESP32 for testing. Please contact me to discuss the details. Best regards, Dennis

Hi, I read your request about RS485 Communicate between S7 1200 and ESP32, I am an Automation engineer with over years using Siemens PLCs and Arduino boards, I did many projects including RS485 with Siemens Plc (using CB1241 and CM1241) I can do this project, I have the S7 1212c in my office and have many devices using RS485, I can simulate a first part in my Hardware You can see my previous works using Siemens PLCs from this link: https://www.freelancer.com/service/plc_scada/siemens-plc-programing-and-scada-systems?frm=ZAKI102&sb=t Let me know if you have any questions or if you would like to discuss the project in more detail

hello sir i am plc programmer with 10 years of experience in the automation field I have good experience with Siemens plc and I do a lot of jobs using it I have all tia portal version and I can star working from now pleas contact me for more details I hope we can work together best reagreds

With my exceptional skills and extensive experience in the field of Electronics and Microcontrollers, I firmly believe I am the perfect choice for your project. Having a profound understanding of PLC and SCADA systems, I have successfully implemented numerous projects involving industrial automation and data acquisition like yours. My familiarity with RS485 Modbus communication, as well as deep knowledge of popular programming languages like PYTHON, will ensure that the electrical conductivity values read by the ESP32 are transferred seamlessly to the Siemens S71200 PLC. What sets me apart from other freelancers is my knack for providing complete solutions. Not only can I develop the necessary software for your project, but I can also test it thoroughly using compatible devices online. This capability will enable me to precisely simulate your proposed setup and ensure its smooth functionality before it is implemented on site. Moreover, my experience with various sensor kits makes me well-suited to set up, configure and calibrate the required electrical conductivity measurement system without any hiccups. Lastly, I pride myself on my commitment to delivering excellence in all projects I undertake. From start to finish, you can count on me to provide timely and professional service, meeting and exceeding your expectations. Join hands with me Muhammad Sharjeel; let's transform your project into a resounding success by combining my expertise with your vision.

Hi Paolo, I see that you are looking for help in sending the electrical conductivity data to the Siemens S7-1200 PLC. I'm very familiar with S7-1200 Modbus RTU and TCP protocol. I also have used ESP32 before but not for conductivity application. Nevertheless, I have confidence in helping you on this project. Let's discuss the project in detail.

Just to be clear, you'll only need the PLC code? Nothing to the ESP board? If so, I'm pretty sure I could deliver this during the weekend. Would need the exact model of the PLC and possible rs485 interface card.

Hi,For precise conductivity measurement and seamless data transfer to a Siemens S7-1200 PLC, we propose an integrated solution. Leveraging Modbus protocol and ESP32, we ensure accurate measurements and efficient communication. Our approach includes sensor calibration, ESP32 integration, and PLC communication expertise. With our streamlined solution, you'll achieve real-time conductivity monitoring without data visualization overhead. Trust us to optimize your system for efficiency and reliability. Best Regards, Terlumun

✅Hi, Client. I am a Micro C and Modbus communication expert ✅ I am interested in your project. I have read the description of your project and understood that you are looking for Micro C developer. I am a senior Micro C developer with 10+ years of rich experience in Micro C/C++ Programming, Arduino, STM32, PLC and Serial com(RS232/485). So, I can complete it within your timeline. Please send a message to discuss this. I look forward to hearing from you. My main goal is to gain my client's satisfaction by completing a job with 100% accuracy Best regards!

Hi As I'm a skilled Automation engineer, I can assist you perfectly. I have 8 years rich experience in Industrial Automation & PLC programming. Let's chat and discuss more details. Best regards. Edwin.

Hello! My name is Enzo Devit, and I'm a developer with experience in projects involving Arduino, ESP32, ESP8266, Raspberry Pi, and other microcontrollers. As a student of Electronic Engineering and an electronic technician, I would greatly appreciate the opportunity to work on a project like this. I am ready to develop the necessary software to measure electrical conductivity values using an ESP32 device and transfer these values via RS485 Modbus communication to a Siemens S71200 PLC. Additionally, I am willing to conduct online testing with the PLC and acquisition system, ensuring flawless operation as per the provided diagram. Furthermore, I have completed very similar projects before, as I have over 5 years of experience working in the robotics and industrial automation sector.

I am an expert in developing smart embedded devices in the field of wireless networks and MCUs. There are also other projects: - The Touch Switch uses NXP's MKL16Z32 and MC9S chips to connect to the zigbee network of Silabs. - Boiler touch switch using chip MKL communicate with TUYA MCU SDK. - Energy saving sensors like PIR, door... used module Zigbee (MGM111A/EFR32MG21) of Silabs. - Smart Lock with NFC Card Reader - Porting source code chip MCU as MKL, STM8/32, ... - Motor control by arduino circuit using PWM, PID .. - The gateway zigbee communicate with Energy meter of HONGFA - Zwave Z500/Z700 Silabs - ESP32 Matter such as switch, sensor smoke ... - ESP32 MQTT/HTTP - LORA mesh using SX1276 chip - ESP32 Ethernet/Modbus RS232/TCPIP --> Please reference to my Portfolio

"Hello, We're a software development team specializing in Modbus protocol. With our expertise, we've successfully crafted efficient solutions for various industrial projects using this technology. We're ready to assist you with our knowledge and experience in Modbus. Our focus is on delivering reliable solutions tailored to your needs. Thank you for considering us, and we look forward to collaborating with you. Best regards

Hi, I am an expert in Siemens PLC and when it comes to non-protocol serial communication protocols (which in your case is not using Modbus, just serial). I have done it before. Recently I have used a RFID reader with RS485 communication to S7-1200 PLC. A bit about my background, I am a Automation Engineer with 5 years of experience mostly in Siemens PLC for my day-to-day job.

I can develop programming process using rs485 basically we have to control develop modbus communication with plc module to devices and active programming