version 4.3.1
- CHG: Serial communication timeouts changed for 300, 600, 1200 and 4800 baud.
- NEW: Simulation of exception code 06, Slave device busy.


version 4.3.0
- NEW: MODBUS UDP/IP


version 4.2.2
- BUG: “NULL bytes” was discarded if another program used the serial port before, 
       and it had the "discard NULL bytes" option set in the serial port.
       This caused “Bytes missing error” information displayed on the error line.
- CHG: Changing settings within the "Slave definition" dialog no more resets
       registers to 0. Changing address or quantity will still reset to 0.
- BUG: Crashed if "Slave definition" settings: Rows = 100 and Quantity > 2000.


version 4.2.1
- CHG: TCP/IP connection. Error information improved.
- NEW: Possible to set the TCP server port. Was fixed to 502.


version 4.2.0
- NEW: Unicode support. Write any language in the alias cells.
- NEW: XP-themes.
- NEW: Save scroll bar position when save to file.
- NEW: Now you can set "Display Type" in the "Slave Definition" dialog box also.
- CHG: Help files now use html format.
- CHG: Display Binary is formatted as: 0000 0000 0000 0000. Was 0000000000000000.


version 4.1.0
- NEW: Error simulation:
       - Insert random CRC errors
       - Delayed response
       - Skip response

- NEW: If a "*.mbs" file is located in the same directory as the workspace (*.msw) file
       then the "*.mbp" file is stored as a relative filename in the *.msw. This allow
       you to move the *.msw file with the *.mbp files to another directory. Thus The 
       *.mbw file will still be able to find the *.mbs files as they are relative to
       the *.msw.


version 4.0.0
- NEW: Grid used to view Modbus values.
- NEW: Alt+S, Alt+U, Alt+H and Alt+B used to change display types.
- CHG: F8 used to display Poll definition instead of F2. (F2 used to edit cell)


version 3.1.5
- NEW: Serial port 1-32. Was 1-8.
- NEW: Hyper link in about box.
- BUG: Double click a *.mbp file did not open Modbus Slave. This bug arose in V3.1.3
       where Microsof Visual C++ .NET 2003 compiler was used.
       Read more: http://www.codeguru.com/cpp/w-d/doc_view/misc/article.php/c8549/


Version 3.1.4
- BUG: Max number of registers with the OLE/Automation was 127
       should be 2048


Version 3.1.3
- BUG: Memory leak problem with the OLE/Automation function
       CreateRequest fixed.
- CHG: Version number format changed and build number is shown in about box.
- CHG: MS VC++ version 2003 used.


Version 3.10a
- CHG: 4 minutes trial period extended to 10 minutes.


Version 3.1
- NEW: Connection information in status bar


Version 3.0
- NEW: Modbus TCP/IP


Version 2.0
- NEW: OLE Automation for Excel interface
- NEW: Open/save workspace. File menu
- NEW: Always on top. View menu.