RTCU NX-900 Technical Manual V1.02
Advanced M2M/IIoT Gateway
Logic IO ApS.
Ph: (+45) 7625 0210
Holmboes Allé 14
Fax: (+45) 7625 0211
8700 Horsens
Page 30 of 45
Denmark
S2: System LED2 pattern overview (Cellular
activity and “Wait For Event”)
Pattern
Operating Status
Off
The cellular engine is turned off
600 ms On / 600 ms Off green
Missing SIM card or PIN code.
Network search and logon in progress.
75 ms On / 3 s Off green
Logged on to the network.
75 ms On / 75 ms Off /
75 ms On / 3 s OFF green
A Packet/GPRS session is active.
Flashing green
Indicates Packet/ GPRS data transfer.
On green (and all other LEDs OFF)
The system is booting into recovery mode
10 s OFF / 50 ms ON green
(and all other LEDs OFF)
The RTCU device is in low-
power “Wait For Event” state.
Switches
DIP-Switch
The RTCU NX-910 device contains four dipswitches, where three of them are available for the
application to use. The dipswitches are located inside the device (
see drawing below or graphical view
).
System switch (RST)
The RTCU NX-910 device contains a combined reset/diagnostic switch. This switch is accessible
from the inside of the device.
By activating the switch shortly, the RTCU device will do a complete reset as if the power was
removed and reapplied.
If the reset switch is held down for approx. 3 seconds
1
the device will instead enter recovery mode
2
where the application will not be started. In recovery mode, the system will automatically turn on
any communication channel and establish a connection to the RTCU Gateway (if configured).
Pressing reset will also activate the device when in power-down mode. If external power is
removed and the backup battery is disabled, the reset switch can still be used to boot into recovery
mode, as long as there is enough power left on the battery.
15 System LED S2 will flash green three times when this state is entered.
26 System LED S1 will indicates this state by fast blinking green or yellow.