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Feb.01, 2016, v1.3.9

Fix: The 16 LED may flash shortly when power-up.
	  Boot Loader and Firmware are fixed.
     It's not related with the DIO operations, don't worry it.
	  
Add: Supports ET-2242 (16 DO), ET-2254 (16 UDIO), ET-2268 (8 Relay, 8 DI).

     Add Modbus address 299, 300 ~ 315 for ET-2254 module.
	  299      : Force UDIO Mode. 
	             0 = Dynamic I/O type based on DO requests.
					 1 = Static I/O type by configuration (web or Modbus).
	  300 ~ 315: UDIO type. 
	             0 = DO type, 1 = DI type.
                300 is the CH0 address, 301 is the CH1 address, and so on.
					 
Chg: Shows DI/DO status based on channel counts on the Home page.
     Shows DI/DO status by using small icon image.
	  DO icon is clickable that used to switch the DO state.

Fix: Fix the PWM and DI Filter logicals.

Chg: Change the priority of the DO functions... 
     Safe-value > min-switch > auto-off = PWM = DIO Same.

Fix: The PWM setting of the web page does not work correctly. Fixed.	  

Chg: Change the DIO Same mode to DIO Sync mode.
     This is used for DIO synchronization (mirror DI to DO locally).
	  Change the "Advance DIO Setting" to "Snyc" and put it on the top menu.
	  
	  ET-2254 supports DIO Sync when 8-bit low part is DI mode and 8-bit high part is DO part.

Fix: DO min-switch and auto-off time does not counting correctly. Fixed.	  

Add: Supports DIO Sync mode of Rising Active & Falling Active.
	  ET-2254 supports these functions when low 8 channels are DI and high 8 channels are DO.
	    
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Sep.16, 2015, v1.3.7

Release Version.
Support ET-2255 (8 DI, 8 DO).

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Aug.11, 2015, v1.3.5

First Release Version.
Support ET-2260 (6 DI, 6 Relay).
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