User Manual

Table Of Contents
SARA-R4 series-AT commands manual
UBX-17003787 - R16
15Power management
Page 184 of 401
Command Response Description
AT+CPSMS? +CPSMS: 1,,,"10110100","00000010"
OK
Check the <Requested_Periodic_
TAU> parameter value. The
<Requested_Periodic_TAU> bitmask
is converted to "10110100" that
corresponds to 1 minute * 20 (= 20
minutes)
AT+CPSMS=1,,,"00000001","000000
01"
OK Set <Requested_Periodic_TAU>
to "00000001" corresponding to 10
minutes (=10 minutes * 1)
AT+CPSMS? +CPSMS: 1,,,"10010100","00000001"
OK
Check the <Requested_Periodic_
TAU> parameter value. The
<Requested_Periodic_TAU> bitmask
is converted to "10010100" that
corresponds to 30 seconds * 20 (= 10
minutes)
Table 14: <Requested_Periodic_TAU> bitmask conversion examples
SARA-R404M / SARA-R410M / SARA-N4
The <Requested_Periodic_RAU> and <Requested_GPRS_READY_timer> parameters are not
supported.
SARA-R410M-02B / SARA-R410M-52B / SARA-R412M / SARA-N4
The <mode>, <Requested_Periodic_TAU> and <Requested_Active_Time> parameter are mandatory.
SARA-R410M-63B / SARA-R410M-73B / SARA-R410M-83B
To disable the use of PSM and reset all the PSM parameters to default values (<Requested_Periodic_
TAU>="00011000" and <Requested_Active_Time>="00001010") issue AT+CPSMS=.
If <mode>=0 (PSM is not being requested to the network), the <Requested_Periodic_TAU> and the
<Requested_Active_Time> parameters are set to 0.
15.3Power saving mode assigned values +UCPSMS
+UCPSMS
SARA-R410M SARA-R412MModules
SARA-N4
Syntax PIN required Settings saved Can be aborted Response time Error referenceAttributes
full No No No - +CME Error
15.3.1Description
Reads the UEs power saving mode (PSM) parameters assigned by the network. The command returns the
state of PSM on the UE, as well as:
the requested extended periodic RAU value in GERAN/UTRAN
the requested GPRS READY timer value in GERAN/UTRAN
the requested extended periodic TAU value in E-UTRAN
the requested Active Time value
To be noticed that:
If the power saving mode is enabled (+UCPSMS: 1), after the expiry of T3324 (assigned Active Time), every
SW and HW component on the device will power down except the real time clock (RTC). It will stay powered
down until the expiry of the assigned extended periodic TAU value (T3412_ext), if present, or assigned
periodic TAU value (T3412) (if the former is not present) or the power on line is toggled.
Power saving mode disabled (+UCPSMS: 0): the device will not enter the power save mode (PSM).
SARA-R4 / SARA-N4
If the power saving mode is enabled (+CPSMS: 1) and not granted by the network (+UCPSMS: 0), the device
will enter the non-network-coordinated PSM.