User Manual

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Hardware Introduction
Demonstrated 8 port model to be an example.
Reset Button
Press the Reset button continuously for 5 second to load factory defaults:
Use a pointed object to press the reset button. Release the button after
the Ready LED stops blinking.
RS-485 adjustable pull up/down resistor (150/1 KΩ)
The NPort 6650 has 3 DIP Switches associated with each serial port for
configuring the pull up/down resistors for RS-485 applications. The
switches are located in a recess on the bottom of the NPort 6650. To
access the switches, first remove the panel covering the recess.
SW
1
2
3
Pull Up
Pull Down
Terminator
ON
1 KΩ
1 KΩ
120 Ω
OFF
150 KΩ
150 KΩ
–
NOTE
For RS-232 applications, all DIP Switches for the port should be
set to the OFF position.