AT Command Set

8.5AT^SBC Battery charging / discharging and charge control

This chapter is only applicable to MC35, it is not intended for MC35 Terminal.

Responses returned by the AT^SBC command vary with the operating mode of the ME:

Normal mode:

ME is switched on by Ignition pin and running the SLEEP, IDLE,

 

TALK or DATA mode. Charger is not connected. AT^SBC can be

 

used to query the battery capacity and the power consumption of

 

ME and application (if value of application was specified before as

 

<current>).

Normal mode + charging:

Allows charging while ME is switched on by Ignition pin and running

 

the SLEEP, IDLE, TALK or DATA mode. AT^SBC returns charger

 

status and power consumption of ME / application. Battery capacity

 

is not available.

Charge-only mode:

Allows charging while ME is detached from GSM network. When

 

started, the mode is indicated by the URC "^SYSSTART CHARGE-

 

ONLY MODE". AT^SBC returns charger status and power con-

 

sumption of ME / application. Percentage of battery capacity is not

 

available. In Charge-only mode a limited number of AT commands is

 

accessible (see Table 9). There are several ways to activate the

 

Charge-only mode:

 

a) from Power Down mode: Connect charger while ME was powered

 

down with AT^SMSO

 

b) from Normal mode: Connect charger, then enter AT^SMSO.

Alarm mode:

No charging functionality, i.e. charging does not start even though

 

the charger connects to the POWER lines. Battery parameters are

 

not available.

Charging begins once the charger connects to the POWER pins of the ZIF connector (except for the Alarm mode). Please refer to the [1] ("Hardware Interface Description") supplied with your GSM en- gine and the Application Note "Charging the Battery Pack" for details on the charging process.

Test command

Response

AT^SBC=? ^SBC: (list of supported <bcs>s),(list of supported <bcl>s),<mpc> module power

consumption

 

 

Defined values

 

<bcs>

0

No charging adapter is connected

 

1

Charging adapter is connected

 

2

Charging adapter is connected, charging in progress

 

3

Charging adapter is connected, charging has finished

 

4

Charging error, charging is interrupted

 

5

False charging temperature, charging is interrupted while

 

 

temperature is beyond allowed range

<bcl> Battery capacity

0, 20, 40, 60, 80, 100 percent of remaining capacity (6 steps)

0 indicates that either the battery is exhausted or the capacity value is not available

<mpc> Average power consumption:

Value (0...5000) of average power consumption (mean value over a couple of seconds) in mA. See read and write command for details.

MC35_ATC_01_V04.00

Page 180 of 238

02.04.2002

Page 179 Page 181
Page 180
Image 180
Siemens MC35 manual Atsbc Battery charging / discharging and charge control, Bcs
Page 179 Page 181

MC35 specifications

The Siemens MC35 is a compact and versatile modem designed primarily for mobile communication, data transmission, and machine-to-machine (M2M) applications. Launched in the early 2000s, it quickly became popular due to its blend of performance, reliability, and ease of integration, making it a solid choice for developers and businesses.

One of the key features of the MC35 is its support for GSM and GPRS technologies. This allows it to connect seamlessly to various networks, enabling users to transmit data at speeds that were impressive for its time. The GPRS capability can offer data rates of up to 171.2 kbps, allowing for efficient data transfer even in areas with limited connectivity.

The MC35 is designed to support both SMS and voice functionalities, making it adaptable for a range of applications. This includes remote monitoring, telemetry, and alarm signaling. The ability to send and receive SMS messages is a significant advantage for applications that require immediate alerts and notifications, enhancing its utility in security systems and industrial automation.

Furthermore, the modem is equipped with a range of interfaces, including serial communication (RS232), which makes it compatible with various hardware devices. This facilitates easy integration into existing systems, whether for industrial machinery or consumer electronics. Additionally, it features a robust software development kit (SDK), which enables developers to create custom applications tailored to their specific requirements.

Power consumption is another notable characteristic of the Siemens MC35. It is engineered to be energy-efficient, which is especially important for battery-operated devices or systems that require a prolonged operation without frequent recharging or maintenance.

In terms of physical characteristics, the MC35 is compact and lightweight, allowing it to fit into various enclosure designs without occupying much space. Its durability ensures it can perform reliably in different environments, making it suitable for outdoor and industrial applications.

To summarize, the Siemens MC35 stands out as a reliable modem with a rich feature set that includes GSM and GPRS support, SMS and voice capabilities, easy integration through various interface options, and energy-efficient operation. Its adaptability makes it a valuable tool for a wide array of communication and data transmission tasks, solidifying its place in the evolution of mobile communications technology.
Top Page Image Contents