13
Power Button
COM Port
11
System Status LED
12
The power button is a non-latched switch for ATX mode on/off
operation. Press to turn on the system, PWR LED should light
up and to turn off, you can either issue a shutdown command in
the OS, or just press the power button. In case of system halts,
you can press and hold the power button for 5 seconds to
force-shutdown the system. Please note that there is a 5
seconds interval between two on/off operations (i.e. once
turning off the system, you will need to wait for 5 seconds to
initiate another power-on operation).
10
MicroUSB Port
Reserved for system maintenance only.
The COM port is a hardware configurable RS-232/ R
S-
422/ R
S-
485 port. By
default, the port is set up as an RS-232 port. To set up the port for RS-422/
485 operations, please refer to the user manual.
COM Port Definition
There are three LED indicators on the front panel: IGN, OS and
PWR. The descriptions of these LEDs are listed in the following
table.
9
CAN bus Port
CAN bus is a robust industrial bus with a pair of differential signals
and is commonly used in various industrial and in-vehicles
applications. The system is equipped with a CAN bus DB9 port
that is compatible with both industrial and in-vehicle applications.
The CAN bus port supports CAN2.0A and CAN2.0B up to 1Mbps.
NRU-52S Series Rear Panel
15
