IS THERE A WAY TO KNOW WHAT IS THE MODBUS ADDRESS FOR A MODULE ?

[oqapsking]

HELLO

so i have dvp201lc-sl
i wanna read the value using advancedHMI

there is a software named LCsoft for it
and it can read it online

 as in the attachments
i wanna read the ( CH1 Weight Value )

but i can`t get the address for it to use with modbus ascii

can some one help me ?

with thanks

[Archie]

I looked through the manuals, but did not see anything about the Modbus addresses. I would start with the most common 40001

You could also use a serial port sniffer software to capture the data from LCSoft to see if it is using Modbus.

[oqapsking]

I looked through the manuals, but did not see anything about the Modbus addresses. I would start with the most common 40001

You could also use a serial port sniffer software to capture the data from LCSoft to see if it is using Modbus.

first thanks for responing

now i tried software sniffer

(Serial Port Monitor)

and the results are in the attachments ( html file ) and a photo for the test
i tried to use all the

Code: [Select]

Starting Address in it

but none gave the value that i wanted to read

i hope you can help

[Archie]

Try this:

- Add a ListBox to the form
- Add a button to the form
- Double click the button
- Add this code
        Dim v() As String = ModbusASCIICom1.Read("40001", 50)
        For i = 0 To v.Length - 1
            ListBox1.Items.Add(i & " : " & v(i))
        Next

- Run the app and click the button

See if any of those values are what you need.

[oqapsking]

so i found the register

but for some reason there is a bit of diffrence in the value

you can see in the video

https://drive.google.com/file/d/17kS12IumcwqEjkdUTpbioauRn_LOVvhm/view?usp=sharing

it looks like nothing
but in this case the value will be much higher
so the diffrence will grow bigger

any idea why?
or how i can fix it ?

but i wanna try the code you sent too
i will tell you the results

[oqapsking]

Try this:

- Add a ListBox to the form
- Add a button to the form
- Double click the button
- Add this code
        Dim v() As String = ModbusASCIICom1.Read("40001", 50)
        For i = 0 To v.Length - 1
            ListBox1.Items.Add(i & " : " & v(i))
        Next

- Run the app and click the button

See if any of those values are what you need.

the code didn`t work

[Archie]

Is the value really different? Because of it fluctuating, it is hard to tell.

In your BasicLabel, set ValueScaleFactor to 0.01

[Archie]

Try this:

- Add a ListBox to the form
- Add a button to the form
- Double click the button
- Add this code
        Dim v() As String = ModbusASCIICom1.Read("40001", 50)
        For i = 0 To v.Length - 1
            ListBox1.Items.Add(i & " : " & v(i))
        Next

- Run the app and click the button

See if any of those values are what you need.

the code didn`t work

Reduce the value of 50 to 10. Maybe there are not 50 registers in the device

[oqapsking]

Is the value really different? Because of it fluctuating, it is hard to tell.

In your BasicLabel, set ValueScaleFactor to 0.01

i did it could work now the value is bitter
i will test it on the divice when  connect it later


thanks

[Shriram Pendse]

All Delta related products  Holding register address starts at  4096 .

 If master is 1 based , it would be 4097 .

In modscan its first Modbus address is seen as 44097 or 404097 , if in six digits format.

Good Luck.