Version 4.5.1 - BUG: The change "Only available serial ports are listed" in version 4.5.0 do not work with virtual ports. Version 4.5.0 - CHG: Only available serial ports are listed. - NEW: Serial port number 1 - 255. Was 1 - 64. - CHG: Unnecessary error code for setting serial port buffers removed. Problem with opening of serial port in rare cases. - CHG: USB/232/485 converters using chip from FTDI with driver version 2.08.02 (August 11, 2010) and newer: The driver Detect error when application requests RTS_CONTROL_TOGGLE handshaking since this is not supported in hardware. Modbus Poll could not open the serial port with this driver. - CHG: Change of quantity only do no more clear existing values. version 4.4.7 - BUG: Error Simulation: The "Return Exception 06. Busy" did not work as response for function 0x10. - CHG: The function "Read/Write multiple registers" is no more restricted to a single window. - CHG: Formatting of floating point numbers changed for better display of small numbers < 0.000001 version 4.4.6 - NEW: Added OLE/AUTOMATION functions for floats etc. version 4.4.5 - BUG: Display format "float inverse" was not displayed correct after file open. - BUG: Version 4.4.4 could not open file if stored by prior version. version 4.4.4 - CHG: Now 10000 registers in one window. - CHG: Short cut keys for display type changed. version 4.4.3 - BUG: Problem with ASCII mode fixed. version 4.4.2 - CHG: Windows 7 compatibility issue with OLE/Automation interface. - BUG: Mask write register did not work. Introduced in version 4.2.1 version 4.4.1 - BUG: In rare cases a serial port was not listed by name but COMxx only. version 4.4.0 - NEW: Baudrate 128000, 256000 added. - NEW: Possible to enter IP Address. - NEW: Modbus RTU Over TCP/IP. - NEW: Modbus RTU Over UDP/IP. - NEW: Serial port names are now listed. - BUG: "Communication Traffic" dialog box did not show received data if Modbus UDP/IP was selected - NEW: Content of alias cells are now moved to other cells if number of rows is changed. - BUG: If an Alias field was edited, there was no prompt to save changes when closing Modbus Slave. 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 information 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.