In order to enable ER310 features in EdotWin, user have to modify EDOTWIN.INI:

EDOTWIN.INI
[ER301]
Enable=1

ER301 will output a special card number of 65530 and 65531 for unknown finger and unidentified finger. Hence, this will be shown in E.WIN transaction. To filter this number out, make the following changes in EDOTWIN.INI.

EDOTWIN.INI
[ER301]
BlockFPCodes=1

If that still doesn’t work, then off the feature in ER301 instead.

Setting -> Finger Code -> Off fg code

If ER301 setup screen is blank not showing any controller, even after ER301 is enabled, check the Edotwin folder for ERDEV.DB file. Patch this file into Edotwin folder if it is missing.