I have rebooted RPi3, and tried again. I got following message from RPi3.

# on term1
pi@ras_pi1:~ $ sudo indiserver -v indi_asi_wheel
2017-03-28T00:15:15: startup: indiserver -v indi_asi_wheel
2017-03-28T00:15:15: Driver indi_asi_wheel: pid=1107 rfd=3 wfd=6 efd=7
2017-03-28T00:15:15: listening to port 7624 on fd 4

# Then I open one more terminal:term2 to input a command, and the message.
# on term2
pi@ras_pi1:~ $ indi_setprop "EFW.FILTER_SLOT.FILTER_SLOT_VALUE=1"
No EFW.FILTER_SLOT.FILTER_SLOT_VALUE from localhost:7624

#after above comand input on term2 I got following message on the term1
2017-03-28T00:15:44: Client 0: new arrival from 127.0.0.1:42236 - welcome!
2017-03-28T00:15:46: Client 0: read EOF
2017-03-28T00:15:46: Client 0: shut down complete - bye!

Any suggestion?
Thanks for your help.
Tatsuji

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