The biggest pain-in-the-butt with reading Modbus Floating Point values

[@rickhorstman4484]

You are the best. I found it really hard to find this conclusion on the internet.

[@adi1257]

what is the formula to change from integer little endian to becoame float ?

[@EmileAckbarali]

The formula is a bit complex and the implementation will depend on the Modbus TCP Client that you are using. What is your Modbus TCP Client? Most Clients have the conversion formula built into them.

[@ZUBAIR36]

Can you explain how can I show flow rate like 360.2 using msb value 17330 and 9000 value

[@saedalhabbashi2790]

So in short ! We can’t change how the Floating point is represented in the server or slave, Modbus TCP/IP or Modbus RS/ ASCII, respectively. What we can do is to reverse floating point representation in the master to be( Low and High) in case the slave /server are reversed . As we know the Modbus query standard is HI LO

[@EmileAckbarali]

That is exactly correct Saed.

[@qzorn4440]

fantastic video.. how can an arduino mega or esp32 replace the PC and read then display the flow-meter 30100 30101 registers using the arduino ide? thank you

[@EmileAckbarali]

Hi. Thanks a lot. Glad you liked the video. The Arduino IDE is not really meant for the display of values as it is not Human Machine Interface (HMI) software. But what you could do is to attach an LCD onto the Arduino and display the values on the LCD. So there is no need for a PC for the displaying of values.

[@kantharajd5273]

Thank you, this video helped me a lot to resolve the issue 🙂

[@EmileAckbarali]

So pleased that it did. Thanks for the comment.

[@ahmedjoo1858]

Still not clear how the conversion happened from 17332 & 09175 to float 360.2 ??

[@EmileAckbarali]

Could you give me more detail of what exactly you don't understand. Is it the overall math concepts?

[@ZERGUAY]

@@EmileAckbarali Yes teacher. Could explain how I convert the LSW and MSW into a decimal value.

[@vinaykrishna5510]

Can you please clarify this if you got the solution. I have the same problem with understanding this.

[@iyanlaksanaputra8212]

I tried to read modbus data from flowmeter dynamic flow they said in address 7113 it consists of DPT value, 7114 consist of TT, in this video 1 input register suppose to be 16bit either MSW or LSW, but in flowmeter manual 1 register consist of 32 bit floating point. I used modscan to read the data using swapped float but the DPT value that supposed to be in 7113 shifted to (7115+7116), could you explain that?and how can i identify the rest address which are also shifted.

[@mrmrsstories19]

Did you get the answer?

[@archive9994]

Sir you speak hindi if yes please makes some Hindi video also

[@ZahidkhanJummal]

can i get your email sir

[@EmileAckbarali]

Hi, please feel free to connect with me on LinkedIb ... www.linkedin.com/in/emile-ackbarali-0658b864/