ModScan Application Change History


March 15, 1996

	Reversed prefix display for registers to use <40000> for Holding
	Registers (Msg Type 03), and <30000> prefix for Input Registers,
	(Mesg Type 04).  The prefix defined by the standard does not
	track the message type as assumed in the original ModScan design.

	Version Number changed to 1.A11

March 23, 1996

	Added support for message types 15 & 16, (Force Multiple Coils &
	Preset Multiple Registers).
	
	Version Number changed to 1.A20.

April 25, 1996

	Modified display view to reduce "flicker" during live updates
	of MODBUS data points.

	Added ability to print data display.

	Version Number changed to 1.A21.

June 10, 1996

	Modified display to erase old counter values after reset.

	Version Number changed to 1.A22

August 31, 1996

	Added ability to transmit user defined command string to slave device.

	Version Number changed to 1.A23

October 25, 1996

	Added ability to control RS-232 control lines RTS/DTR.

	Version Number changed to 1.A25

January 4, 1997

	Added ability to display/modify registers using floating-point notation.

	Version Number changed to 1.A26

February 3, 1997

	Corrected problems with Writing data using the Ascii protocol.
	
	Version Number changed to 1.A27

February 16, 1997

	Reversed logic for Floating-Point display, (swapped vs. non-swapped)

	Version number changed to 1.A28

March 14, 1997

	Added Binary display option, corrected ASCII protocol operation
	to ignore extraneous characters outside the msg frame.

	Version number changed to 1.A29

April 20, 1997

	Added dialog box to allow setting register values using discrete
	check boxes for binary data.

	Version Number changed to 1.A2A

June 4, 1997
	Added option to display Long Integer Values.

	Version Number changed to 1.B02

June 5, 1997
	Changed Long Integers to Double Floats

	Version 1.B03

July 14, 1997
	Added ability to log data to ascii text file.

	Version 1.B04

July 29,  1997
	Added option to display register addresses in HEX.

	Version 1.B05

August 6, 1997
	Added ability to enter Address > 9999 in script file.

	Version 1.B06

Sept. 15, 1997
	Script execution of multiple write functions was calculating
	wrong LRC in ASCII transmission mode.

	Version 1.B07

Feb 2, 1998
	Corrected exception response handling for Ascii Transmission mode.
	Enable baud rate selections up to 128K.

	Version 1.B08

March 8, 1998
	Script execution of multiple write functions was calculating the
	wrong checksum in the expected reply message.

	Version 1.B09