Sierra Wireless FX30S User Guide
Rev 2 Mar.18
56
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Figure 3-5: FX30S on mounting bracket
Power Modes
The FX30S is designed to handle extremely low power. It has three power modes:
•
•
•
OFF Mode
In Off mode the FX30S application processor, WWAN radio, and low power micro-
controller are off. On/Off is controlled by the On/Off Pin 3/GPIO24 and Power
Hold/GPIO58.
If no Legato applications are in place for GPIO58 (power hold), the gateway is off
when Pin 3 is low and on when Pin 3 is high.
However, the power line from Pin 3 is also connected to GPIO58 (power hold).
GPIO58 is low by default. If either Pin 3 or GPIO58 is high, the gateway is on.
GPIO24 monitors Pin 3. (See
on page 57.) This gives you the option to
design an application that detects when Pin 3 goes low, and holds the power on
temporarily to complete the desired actions prior to the gateway turning off, for
example, a graceful shutdown process or a last-gasp type feature.
Top View
Side View
End Views
Note: “Unit” refers to the gateway itself.
FX30 with Ethernet port shown
