Technical reference section

The AT standard

With the development of intelligent modems, an command language was introduced in the U.S. called the AT standard. Over the past few years, this language has been con- sistently enhanced and has gained international acceptance. Most modems and com- munication programs work with this command language or can be set to use it.

AT command line prefix

The AT standard is a line-oriented command language. Each command line must begin with the letters AT, with the sole exception of the A/ command. The commands are in- troduced at the end of this section. The letters AT are also known as the attention code. The attention code signals your GSM module that one or more commands will follow. The GSM module examines this command line prefix.

Connecting to your GSM module

You have connected your GSM module to your PC. You can now connect to your GSM module. To do so, start up a communication program on your PC.

Set the following transmission parameters (characteristics):

COM interface:

1 - 4, depending on which one the M1 is connected to

Rate:

2400 - 19200 baud

Data bits:

8

Parity:

None

Stop bits:

1

Duplex:

Full

The GSM module supports autobauding on the V.24 interface with transfer rates from 2400 to 19200 baud and the data format 8N1.

Command syntax of the AT standard

•Command lines must always begin with AT.

•Multiple commands can be combined on one command line. To improve legibility, you can enter spaces between the individual commands. The GSM module ignores these spaces.

•Commands that are specified in this manual with "0" in the last position can also be entered without this "0". Example: ATQ has the same effect as ATQ0.

•A command line must end with a <CR> character, which is entered by pressing "En- ter" on the keyboard. This fact will not be mentioned again in this manual.

16

Page 16 Page 18
Page 17
Image 17
Siemens M1 manual Technical reference section AT standard, AT command line prefix, Connecting to your GSM module
Page 16 Page 18

M1 specifications

The Siemens M1 is a prominent urban transit solution designed for efficient and sustainable public transportation systems. This innovative metro train has become a staple in various metropolitan areas, known for its balance of performance, safety, and passenger comfort.

One of the key features of the Siemens M1 is its modular design, which allows for flexibility in configuration depending on specific transit needs. The train typically consists of multiple carriages that can be adjusted for length and capacity, accommodating different passenger volumes while minimizing operational costs. This adaptability makes the M1 ideal for growing urban environments where ridership numbers can fluctuate.

The Siemens M1 is built with advanced technologies that enhance its operational efficiency. It utilizes a lightweight construction, primarily through the use of aluminum, which reduces energy consumption while still maintaining structural integrity and safety standards. The train is also equipped with cutting-edge traction systems that ensure smooth acceleration and fast braking, resulting in a comfortable ride for passengers.

Safety is a paramount concern in transit systems, and the M1 incorporates various safety technologies. It features advanced signaling systems that enhance communication between trains and trackside equipment. Moreover, the train is designed with anti-collision measures and real-time monitoring systems that can detect faults before they lead to service disruptions.

Passenger comfort is another critical aspect of the Siemens M1 design. The interiors are spacious and feature modern seating arrangements, allowing for easy movement within the train. Large windows provide natural light and views of the outside environment, contributing to a more pleasant travel experience. The train also offers features like climate control, information displays, and accessibility options for passengers with reduced mobility.

Environmental sustainability is an integral part of the Siemens M1’s design. It is tailored to reduce carbon emissions, featuring energy-efficient systems that lower the overall ecological footprint. Additionally, the train can be integrated with renewable energy sources, further promoting green public transport initiatives.

Overall, the Siemens M1 stands out as a versatile and efficient urban transit option, combining modern technology and design principles that cater to the needs of both operators and passengers. With its focus on safety, comfort, and sustainability, the Siemens M1 continues to play a vital role in shaping the future of urban mobility.
Top Page Image Contents