NPort 5600 Series User’s Manual Getting Started
2-6
Link Indicator on the Rear Panel of NPort 5650 Fiber Model
The rear panels of NPort 5600 have a link indicator, as described in the following table.
LED Name LED Color LED Function
Off Fiber is disconnected
Green Fiber is connected and no data is being transmitted
Link
Blinking Fiber is connected and data is being transmitted
Real Time Clock
NPort 5600’s real time clock is powered by a lithium battery. We strongly recommend that you do
not replace the lithium battery without the presence of Moxa’s technical support engineers. If you
need a battery change, contact Moxa for assistance.
ATTENTION
There is risk of explosion if the battery is replaced by an incorrect type. You need to dispose
used batteries according to the instructions.
Adjustable Pull High/low Resistors for the RS-485 Port
In some critical environments, you may need to add termination resistors to prevent the reflection
of serial signals. When using termination resistors, it is important to set the pull high/low resistors
correctly so that the electrical signal is not corrupted. Since a particular pull high/low resistor
value cannot fit all environments, the NPort 5650 uses DIP switches to set the pull high/low
resistor values for each serial port.
To set the pull high/low resistors to 150 KΩ, make sure both of the assigned DIP switches are in
the OFF position. This is the default setting.
To set the pull high/low resistors to 1 KΩ, make sure both of the assigned DIP switches are in
the ON position.
ATTENTION
Do not use the 1 K setting on the NPort 5650 when using the RS-232 interface. Doing so will
degrade the RS-232 signals and shorten the maximum allowed communication distance.
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