Jump to content
Sign in to follow this  
bp9606

Unable get reader response in "Answer" mode

Recommended Posts

I have the long range integrated RFID reader - rs232 version.  I used the configuration software to place the reader in "Answer" mode.  I have tried using the Arduino sample to send the identify command to the reader, to no avail.  I do not get a response when a tag is present.

 

I placed the reader back in "Active" mode, and connected it to the Arduino, and the sample program is receiving responses from the reader, when it reads a tag.

 

Ultimately, I would like to use a VB.NET program to query the reader, whenever I need to identify a tag.  I am trying to build a system for a truck scale application.  I can monitor the rs232 output from a scale indicator to detect whenever a truck pulls up on the scale.  I then want to issue a command to the reader, to identify the tag on the truck windshield, to automate ticketing.

 

I have tried the following VB code, with the reader in answer mode, but it does not read tags.

 

   Private Sub Button1_Click(sender As Object, e As EventArgs) Handles Button1.Click
        Dim mydata As Byte() = {&H7C, &HFF, &HFF, &H1, &H8, &H7D}
        If SerialPort1.IsOpen = False Then SerialPort1.Open()
        SerialPort1.Write(mydata, 0, 6)
 
    End Sub
 
I even tried this, but it also does not seem to get the reader to look for a tag.
 
        SerialPort1.Write(&H7C)
        SerialPort1.Write(&HFF)
        SerialPort1.Write(&HFF)
        SerialPort1.Write(&H1)
        SerialPort1.Write(&H8)
        SerialPort1.Write(&H7D)
 
I can read the responses from the reader with my VB program, when it is in "Active" mode and constantly broadcasting tag identities.
 
Obviously, I'm not understanding something.  I would simply like to issue a command to the reader to identify a tag in proximity, then my program will act on the response from the reader.  Can anyone shed any light on this?  

 

Share this post


Link to post
Share on other sites

I used the RRU1861Csharp.DLL and the Basic.DLL to open my RFID readers then read the tags.

I would like to get away from using the DLL so let me know how your progress is going.

I have mine set on a timer so it is constantly looking for a tag would be nice if I could trigger it and lengthen the life of the reader.

Share this post


Link to post
Share on other sites

Create an account or sign in to comment

You need to be a member in order to leave a comment

Create an account

Sign up for a new account in our community. It's easy!

Register a new account

Sign in

Already have an account? Sign in here.

Sign In Now
Sign in to follow this  

×