== Main Board Update History ==

==== Ver: 1.21.021 (DLC Version) October 15, 2020 ====
Improved DLC card communications of network parameters. (DLC card should be updated to version 1.00.016)

==== Ver: 1.20.009  January 22, 2020 ====
Added feature for SWIM (slow speed weight-in-motion) when enabled main board buffers weight samples above specified threshold and sends in blocks to OPI board to allow greater throughput. 

==== Ver: 1.21.011 (DLC Version) February 6, 2019 ====
Fixed problem with version 1.21.010 that may prevent updating the mainboard software from USB or network. A mainboard already loaded with version 1.21.010 may have to be connected to a BDM with appropriate software to reflash it.

==== Ver: 1.21.010 (DLC Version) December 12, 2018 ====
Updated so VCC low voltage interrupt is debounced to prevent brief power disturbance from stopping mainboard. Low voltage condition now sets flag to appear in startup screen, but does not stop mainboard operation.

==== Ver: 1.21.009 (DLC Version) October 25, 2018 ====
Updated communications code for DLC card support. No longer supports old style mainboard 2010 and earlier DeviceNet communications. Should not be used for ICAN systems.

==== Ver: 1.20.006  October 13, 2017 ====
Updated to allow multi repeat and repeating scoreboard or other output simultaneously.

==== Ver: 1.20.004  February 15, 2013 ====
Improved scale step feature to allow real-time DIO off for fast weight done, slow starting.

==== Ver: 1.20.003  August 7, 2012 ====
Resolved issue that with OIML enabled and using ICAN COM3 OIML weight output was not working.

==== Ver: 1.20.002  July 18, 2012 ====
Updated to raise OPI CTS during first character transmission of message to OPI board when multi drop mode is disabled. Updated OPI will use this to verify message sychronization when multi drop mode is disabled. Disabling multi drop mode seems to prevent problem with MCF5213 UART sometimes going into non- recoverable repeating transmission of data. Updated scale step mode to allow for digital output to be turned off when slow fill is finished.

==== Ver: 1.17  September 1, 2010 ====
Improved COM3 to allow TX enable/disable for RS485. Uses same command from main board as SetRTS.

==== Ver: 1.16  February 17, 2010 ====
Added support for ICAN cards.

==== Ver: 1.14  July 9, 2009 ====
Added support for DIO card counting feature.

==== Ver: 1.12  June 17, 2009 ====
Added support for DAC card.

==== Ver: 1.11  March 3, 2009 ====
Communications improvements to help prevent “Lost communications with main board”.

==== Ver: 1.10  November 7, 2008 ====
Added DIO event method to remove all events and reset outputs to low state. 5B {card} 00 00 00 00 FF FF FF FF {condition empty}

==== Ver: 1.08  Oct 15, 2008 ====
Fixed problem if main board received message from OPI of 2 bytes or less, which might happen due to noise, the main board would stop communicating with the OPI causing “Lost communications with main board”.