<div>
Check your device's manual.<br />
<br />
Cause if you really receive a string containing an hexadecimal value, then it should be documented. Otherwise, check your code. Do you convert the received bytes to an hexadecimal string yourself?<br />
<br />
Your result contains 7 bytes, unusual, seems not to be a number otherwise it would be aligned.<br />
Then the first four bytes are non-printable ASCII codes.<br />
The last three would be ?9?, which makes not much sense also.
</div>


<div>
Change your baud rate. I get those kinds of values when I use the incorrect one
</div>


<div>
Shaun that is the Baudrate specified by the vendor and it is also the corerct response.
</div>


<div>
ste5an,<br />
<br />
Looking more into it I wasn;t returning the correct amount of registers. So now the HEX string I get &quot;01030600e300e300f814d7&quot;<br />
<br />
So how can I cover this into reading something?<br />
<br />
I have attached their map but still do not know how to read this.<a href="https://filedb.experts-exchange.com/incoming/2018/09_w38/1384843/ieeefloats.xls" target="_blank" class="file-inline" title="Hardware Information (54 KB)"><svg xmlns="http://www.w3.org/2000/svg" viewBox="0 0 512 512"><path d="M67.508 468.467c-58.005-58.013-58.016-151.92 0-209.943l225.011-225.04c44.643-44.645 117.279-44.645 161.92 0 44.743 44.749 44.753 117.186 0 161.944l-189.465 189.49c-31.41 31.413-82.518 31.412-113.926.001-31.479-31.482-31.49-82.453 0-113.944L311.51 110.491c4.687-4.687 12.286-4.687 16.972 0l16.967 16.971c4.685 4.686 4.685 12.283 0 16.969L184.983 304.917c-12.724 12.724-12.73 33.328 0 46.058 12.696 12.697 33.356 12.699 46.054-.001l189.465-189.489c25.987-25.989 25.994-68.06.001-94.056-25.931-25.934-68.119-25.932-94.049 0l-225.01 225.039c-39.249 39.252-39.258 102.795-.001 142.057 39.285 39.29 102.885 39.287 142.162-.028A739446.174 739446.174 0 0 1 439.497 238.49c4.686-4.687 12.282-4.684 16.969.004l16.967 16.971c4.685 4.686 4.689 12.279.004 16.965a755654.128 755654.128 0 0 0-195.881 195.996c-58.034 58.092-152.004 58.093-210.048.041z"/></svg>ieeefloats.xls</a>
</div>


ieeefloats.xls

<div>
22 bytes is still uncommon. Cause IEEE floats according to your specs are DWORDs, thus 4 bytes.<br />
<br />
E.g. <a href="https://www.h-schmidt.net/FloatConverter/IEEE754.html" rel="ugc">https://www.h-schmidt.net/FloatConverter/IEEE754.html</a>
</div>


<div>
OK great ste5an!<br />
<br />
So backing up I return a response in HEX with the following<br />
01 03 02 00 CE 39 D0<br />
<br />
I know the following of the message response<br />
01 = Rank (always stays the same)<br />
03 = command ( always stays the same)<br />
02 = Byte length<br />
00 = Part of the Temp Field<br />
CE = Part of the Temp Field<br />
39 = CRC<br />
D0 = CRC<br />
<br />
I need to pull out the &nbsp;00 and the CE of the HEX response message and convert it to Decimal. &nbsp;How can I always pull out these two fields in the HEX response message and convert to Decimal?
</div>


<div>
Now a completely new direction?<br />
<br />
Okay, here we need to look at the device and how it transmits data. Thus we need to know: is a strict datagram protocol used or a plain-text protocol?<br />
<br />
It looks like a datagram protocol (TLV: tag, length, value). This means that we need to start with the basics of serial communications:<br />
<br />
1. Read data into a buffer.<br />
2) Examine the buffer after read for complete datagrams.<br />
3) In the case of incomplete datagrams, maybe request transmission again.<br />
4) When a complete datagram is in the buffer (at the begin), remove it.<br />
5) Handover the datagram for processing.
</div>


<div>
No not a completely different direction!... Just I understand a little better what I am reading from the device. In this example. I will only ever need to read the following<br />
<br />
01 = Rank (always stays the same)<br />
03 = command ( always stays the same)<br />
02 = Byte length<br />
00 = Part of the Temp Field<br />
CE = Part of the Temp Field<br />
39 = CRC<br />
D0 = CRC<br />
<br />
I need to read the 2 bytes after the length and before the CRC. and then convert them into decimal. That what I am looking for how to do that?
</div>


<div>
We need to start with the receiving code. What do you have so far?
</div>


<div>
<pre><code class="code-10 nolinks" id="code-20-42685520-1"><span>Private Sub Button1_Click(sender As Object, e As EventArgs) Handles Button1.Click</span>
<span>        If ComboBox1.SelectedIndex = -1 Then</span>
<span>            MessageBox.Show(&quot;Please select a port&quot;)</span>
<span>            Exit Sub</span>
<span>        Else</span>
<span>            SerialPort1.BaudRate = 9600</span>
<span>            SerialPort1.DataBits = 8</span>
<span>            SerialPort1.Parity = IO.Ports.Parity.None</span>
<span>            SerialPort1.StopBits = IO.Ports.StopBits.One</span>
<span>            SerialPort1.PortName = ComboBox1.SelectedItem.ToString</span>
<span>            serialport1.Open()</span>
<span>            'HEX values to read temperature 01 03 00 0E 00 01 E5 C9</span>
<span>            Dim bytes() As Byte = {&amp;H1, &amp;H3, &amp;H0, &amp;HE, &amp;H0, &amp;H1, &amp;HE5, &amp;HC9}</span>
<span>            serialport1.Write(bytes, 0, bytes.Length)</span>
<span>        End If</span>
<span></span>
<span>Private Sub SerialPort1_DataReceived(ByVal sender As System.Object, ByVal e As System.IO.Ports.SerialDataReceivedEventArgs) Handles serialport1.DataReceived</span>
<span></span>
<span>        Dim rcv As String = serialport1.ReadExisting</span>
<span>        buffer = String.Concat(buffer, rcv)</span>
<span>        Dim hexVal As String = &quot;&quot;</span>
<span>        For Each c As Char In rcv</span>
<span>            hexVal = hexVal &amp; AsciiCharToHexSring(c)</span>
<span>        Next</span>
<span></span>
<span>        MessageBox.Show(hexVal)</span>
<span></span>
<span>    End Sub</span>
</code></pre>
</div>


<div>
Nope. E.g.<br />
<br />

<pre><code class="code-10 nolinks" id="code-20-42685752-1"><span>Private Buffer As String</span>
<span></span>
<span>Private Sub SerialPort1_DataReceived(ByVal sender As System.Object, ByVal e As System.IO.Ports.SerialDataReceivedEventArgs) Handles serialport1.DataReceived</span>
<span>    Dim datagram As String = Nothing</span>
<span></span>
<span>    Buffer = Buffer &amp; serialport1.ReadExisting</span>
<span>    datagram = DequeueDatagram()</span>
<span>    Do While Not datagram Is Nothing</span>
<span>        HandleDatagram(datagram)</span>
<span>        datagram = DequeueDatagram()</span>
<span>    Loop</span>
<span>End Sub</span>
<span></span>
<span>Private Function DequeueDatagram() As String</span>
<span>    Dim valueLength As Long</span>
<span></span>
<span>    DequeueDatagram = Nothing</span>
<span>    If Buffer.Length &gt; 3 Then</span>
<span>        valueLength = Asc(Mid(Buffer, 3, 1))</span>
<span>        If Buffer.Length &gt;= 5 + valueLength Then</span>
<span>            DequeueDatagram = Mid(Buffer, 1, 5 + valueLength)</span>
<span>            If Buffer.Length = 5 + valueLength Then</span>
<span>                Buffer = &quot;&quot;</span>
<span>            Else</span>
<span>                Buffer = Buffer.Substring(5 + valueLength + 1)</span>
<span>            End If</span>
<span>        End If</span>
<span>    End If</span>
<span>End Function</span>
<span></span>
<span>Private Sub HandleDatagram(ADatagram As String)</span>
<span>    Dim datagramRank As Byte = Asc(ADatagram.Substring(0, 1))</span>
<span>    Dim datagramCommand As Byte = Asc(ADatagram.Substring(1, 1))</span>
<span>    Dim datagramLength As Byte = Asc(ADatagram.Substring(2, 1))</span>
<span>    Dim datagramValue() As Byte = Encoding.GetEncoding(1252).GetBytes(ADatagram.Substring(3, datagramLength))</span>
<span>    Dim datagramCrc() As Byte = Encoding.GetEncoding(1252).GetBytes(ADatagram.Substring(ADatagram.Length - 2, 2))</span>
<span></span>
<span>    Console.WriteLine(Hex(datagramRank))</span>
<span>    Console.WriteLine(Hex(datagramCommand))</span>
<span>    Console.WriteLine(Hex(datagramLength))</span>
<span>    Console.WriteLine(Hex(datagramCrc(0)))</span>
<span>    Console.WriteLine(Hex(datagramCrc(1)))</span>
<span>    Console.WriteLine(Hex(datagramValue(0)))</span>
<span>    Console.WriteLine(Hex(datagramValue(1)))</span>
<span>End Sub</span>
</code></pre>
</div>


<div>
My Example above was able to produce the HEX string inside a message box. I need help with converting the HEX to decimal.
</div>


<div>
OK let me look at the code. Losing my mind today. &nbsp;Thank you very much!
</div>


<div>
And?? Did you read the manual at all? Cause the sample above returns two bytes as payload. Your IEEE sheet only describes four byte floats.<br />
<br />
Just convert your number from datagramValue(0) and datagramValue(1) in your case.
</div>


<div>
Ste5an,<br />
<br />
Running you code I am not getting the same values with a manufacture software example. &nbsp;I notice you flipped the CRC position on the write. But my number are not matching the manufacture????
</div>


<div>
Ste5an, no manual at all. Again only what I have given above. I am not sure with your code as stated above why do you flip the Value and CRC position? <br />
<br />
Not really following you on your code example. What is different from my example?
</div>


<div>
Looking at this further is it the encoding that is causing the issue? I think what you are using is a 32 versus 16?
</div>


<div>
I just changed the output order on the console, not the byte order (lines 35 and 36). What is the corresponding value according to the manufacturer's sample?<br />
<br />
btw, what did they give you exactly?
</div>


<div>
Using the Manufacture Software I get the following<br />
<br />
01 &nbsp;03 &nbsp;02 &nbsp;00 DE 38 1C<br />
<br />
where 00 DE &nbsp;= 222 dec which in there eyes equals 22.2 degrees Celsius.<br />
<br />
Using your code I get the following in the console window:<br />
<br />
01 03 &nbsp;02 3F 3F 00 3F<br />
<a href="https://filedb.experts-exchange.com/incoming/2018/09_w38/1386014/Capture.PNG" target="_blank" class="file-inline" title="Example capture (34 KB)"><svg xmlns="http://www.w3.org/2000/svg" viewBox="0 0 512 512"><path d="M67.508 468.467c-58.005-58.013-58.016-151.92 0-209.943l225.011-225.04c44.643-44.645 117.279-44.645 161.92 0 44.743 44.749 44.753 117.186 0 161.944l-189.465 189.49c-31.41 31.413-82.518 31.412-113.926.001-31.479-31.482-31.49-82.453 0-113.944L311.51 110.491c4.687-4.687 12.286-4.687 16.972 0l16.967 16.971c4.685 4.686 4.685 12.283 0 16.969L184.983 304.917c-12.724 12.724-12.73 33.328 0 46.058 12.696 12.697 33.356 12.699 46.054-.001l189.465-189.489c25.987-25.989 25.994-68.06.001-94.056-25.931-25.934-68.119-25.932-94.049 0l-225.01 225.039c-39.249 39.252-39.258 102.795-.001 142.057 39.285 39.29 102.885 39.287 142.162-.028A739446.174 739446.174 0 0 1 439.497 238.49c4.686-4.687 12.282-4.684 16.969.004l16.967 16.971c4.685 4.686 4.689 12.279.004 16.965a755654.128 755654.128 0 0 0-195.881 195.996c-58.034 58.092-152.004 58.093-210.048.041z"/></svg>Capture.PNG</a>
</div>


Capture.PNG

cmdolcet

<div>
Yes thank you but my problem is HEX return compared from the device from the manufacture software and the HEX code you provided<br />
<br />
01 &nbsp;03 &nbsp;02 &nbsp;00 DE 38 1C<br />
<br />
Using your code I get the following in the console window:<br />
<br />
01 03 &nbsp;02 3F 3F 00 3F<br />
<br />
My issue is the same conditions are present and their program returns &nbsp;00 DE and the code you provided returns 00 3F
</div>


<div>
Ste5an<br />
<br />
Anymore Ideas on how the code you gave &nbsp;has different return values:<br />
<br />
Yes thank you but my problem is HEX return compared from the device from the manufacture software and the HEX code you provided<br />
<br />
01 &nbsp;03 &nbsp;02 &nbsp;00 DE 38 1C<br />
<br />
Using your code I get the following in the console window:<br />
<br />
01 03 &nbsp;02 3F 3F 00 3F<br />
<br />
My issue is the same conditions are present and their program returns &nbsp;00 DE and the code you provided returns 00 3F
</div>


<div>
<div class="content wysiwyg-content">
How can I convert this HEX string to a readable result? I get this string returned from a device I am sending a function to. What can I use to parse and represent the actual result from the device?<br />
<br />
<a href="https://filedb.experts-exchange.com/incoming/2018/09_w37/1384093/Convert-HEX-string.PNG" target="_blank" title="HEX String (12 KB)"><img alt="HEX String" class="file-block lazyload" style="max-width: 800px;" data-src="https://filedb.experts-exchange.com/incoming/2018/09_w37/800_1384093/Convert-HEX-string.PNG" /></a>
</div>
</div>


Convert-HEX-string.PNG

How can I convert this HEX string to a readable result? I get this string returned from a device I am sending a function to. What can I use to parse and represent the actual result from the device?



converting HEX string in .net

Visual Basic .NET (VB.NET) is an object-oriented programming language implemented on the .NET framework, but also supported on other platforms such as Mono and Silverlight. Microsoft launched VB.NET as the successor to the Visual Basic language. Though it is similar in syntax to  Visual Basic pre-2002, it is not the same technology,