5.3.1.1.SMS low battery voltage set point (AT$$LOWBATT_VTG)

This command also sets the SMS Auto Voltage Alert value. (For remote user SMS notification activation please see SMS Auto Voltage Alert).

Table 5-28 Read command

 

Command

 

TE2

Æ

MT2

$$LOWBATT_VTG?

 

Response

 

TE2

Å

MT2

$$LOWBATT_VTG: <value1>

 

 

 

610: Default – voltage point set for $$LOWBATT 1 notification

 

 

 

xxxx: 4 digit number representing voltage to 2 decimal points x100 (i.e. 12.8

 

Value1

 

volts would be represented as 1280, 9VDC would be 0900)

 

 

 

 

 

 

 

Value range is from 0910 to 3600.

E: If the first digit entered is a zero it is ignored in the response.

Table 5-29 Set command

 

Command

 

 

TE2

Æ

 

 

MT2

 

$$LOWBATT_VTG=<value>

 

Response

 

 

TE2

Å

 

 

MT2

 

$$LOWBATT_VTG: <value>

 

 

 

 

 

 

<result_code> (OK ERROR)

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

5.3.1.2.Low battery notification (AT$$LOWBATT)

Table 5-30 Notification command

Notify

TE2

Å

MT2

$$LOWBATT: <value>

 

 

 

 

 

0:normal state (voltage above 9.1VDC or that set by $$LOWBATT_VTG)

Value 1: Low Battery (voltage has dropped to the point set at $$LOWBATT_VTG)

2:Power-off sequence initiated - battery voltage has reached 5.8VDC

NOTE: When the power supply to MT2 reaches 9.1 volts the modem will power up and send a $$LOWBATT 1 notification to TE2. It does not send SMS alert at this time. SMS alert is automatically reinstated once the voltage exceeds the $$LOWBATT 1 set point PLUS 10% as seen by the modem.

The following shows MT2’s responses against the battery level.

Table 5-31 Responses

Battery Level MT2

 

 

 

a) Notifies TE2 with AT:

$$LOWBATT:1

 

Batt level=1

 

b) Notifies local user:

buzzer

 

 

(repetition approx every 2 minutes)

 

 

 

 

 

 

c) Notifies with MO SMS if enabled

 

Batt level=2

 

Transmits $$LOWBATT:2 to TE2

 

 

Executes MT2 power-down sequence

 

 

 

 

 

 

 

 

NOTE: Tolerance of voltage readings is +/-0.4V on average.

NOTE: Modem will auto power up once supply voltage reaches 6.5VDC.

Extended AT Commands Manual

Page 23 of 70

2009-06-25

Page 23
Image 23
Maxon Telecom MM-6280IND manual SMS low battery voltage set point AT$$LOWBATTVTG, Low battery notification AT$$LOWBATT

MM-6280IND specifications

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