Power off, Software power off, Hardware power off – Sierra Wireless AIRPRIME WISMO218 User Manual
Page 66: 5sec, Figure 32, Power-off sequence
WA_DEV_W218_PTS_002
Rev 006
April 29, 2010
66
Product Technical Specification &
Customer Design Guidelines
Interfaces
3.13.3.2. Power OFF
The AirPrime WISMO218 can be powered off by either software or hardware.
3.13.3.2.1.
Software Power OFF
AT command: AT+CPOF is used to power off the AirPrime WISMO218.
Caution: If the ON/~OFF pin is maintained at LOW level when AT+CPOF is used, the embedded module can’t
be switched OFF.
3.13.3.2.2.
Hardware Power OFF
A LOW level pulse is applied on the ON/~OFF pin for 5.5sec. AT+CPOF will then be automatically
sent to the AirPrime WISMO218.
Once the AirPrime WISMO218 receives the AT+CPOF command, the AirPrime WISMO218 will be
deregistered from the network. The WISMO_READY pin will become LOW to indicate that AT
commands are no longer available for the AirPrime WISMO218. If the ON/~OFF signal is HIGH, then
the AirPrime WISMO218 will also be switched off.
Figure 32.
Power-OFF Sequence