To implement a non-standard Modbus protocol using pymodbus.
The message structure to read the hold register data given by the manufacturer is:
address(1byte) + func. code(1byte) + Serial No:(10 bytes) + start reg:address(2 bytes)+length( 2bytes)+ checksum
01 03 31 32 31 34 33 32 34 33 35 33 6E 00 01 00 21 19
There is an addition of 10 bytes of serial no. after function code. This is the serial no of the device.
Can you implement such a modified Modbus protocol using pymodbus.
Can sm1 do by sharing an example simulation (generator) using [login to view URL]
To test the example with a virtual serial port driver (implementing both master and slave).
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Hi, I am an embedded software engineer with more than 5 years of experience in python based Raspberry pi development. I have previous work experience in Modbus protocol for some industrial-grade projects. Also, I ha Plus
Hello, I am interested in your project and I hope to help you realize it, I am passionate about electronics and embedded development and I hope to share with you my knowledge and experience. I can do this work in 5 da Plus
Hello, The additional field will make the checksum formula changed also, but no need to change the package stop byte as it is by stop bytes detector. So yes it is easy to modify. Best Regards, Khamid
Hi, how are you. I am a Communication and raspberry pi expert. I want to work in your project very hard. please hire me. if you do, you will get good result. best regards.
Have lots of experience with MODBUS. have done large number of MODBUS canners. Currently working on an advanced MODBUS simulator for a Fortune 500 company Can we be of help in this project? Thanks
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hello, i am working as embedded engineer at a private company for 4 years. and i have developed a lot of project. i have experience about c c++ cmake python etc. i think i can help you. if you want a meeting about how Plus
Hi, I have more than 5 years of experience in automation fields. Hire me so you get the best quality of the code with unit testing. I'm very well familiar with Modbus RTU protocol and also I have relevant experience f Plus
I have past experience with pymodbus, used on a long-running project for Raspberry-Pi based control system. I can leverage my experience with Python, C++, embedded devices to modify pymodbus to work as per your require Plus