UART有时接收数据不正确

嗨，大家好，
我在PSoC 5和CY8CITK-01开发工具包上有一个UART的问题。我所做的，是通过一个串行到USB电缆发送数据（Modbus）从PC到设备。当使用RealTealPATH向设备发送数据包时，每一次工作都很好。但是，如果我使用.NETSerialPoT类从C语言应用程序发送数据包，则在设备端会有一些字节被加密。这种情况并非每次发生，但实际上大部分时间都没有。我在我构建的PIC Modbus DEVCE上使用了同一个C应用程序，而且每次都很好用。
实际上，我求助于Java，使用RXTX库将Modbus包发送到设备。但是，Java应用程序也会发生同样的情况。
这是怎么回事，当我使用Realterm时，数据会正确地到达设备，但是当我使用任何其他自定义应用程序时，有些字节会被加密？
请帮帮我



     以下为原文
   Hi all,
     
    I have a problem with the UART on the PSoC 5 and the CY8CKIT-001 development kit. What I am doing, is sending (Modbus) data via a serial to USB cable from the PC to the device. When using Realterm to send the data packet to the device, everything works fine, every time. However, if I send the data packet from a C# app using the .net SerialPort class, some bytes get scrambled at the device side. This does not happen every time, but actually most of the time. I used the same C# app on a PIC Modbus devce that I built, and it works fine every single time.
     
    I actually resorted to go to Java, using the RXTX library to send the Modbus packet to the device. However, the same happens from the Java app.
     
    How can this be, that the data gets to the device correctly when I am using Realterm, but when I am using any other custom app, some bytes get scrambled?
    Please help me with this