AT Command Set

4.7AT+CCLK Real Time Clock

Test command

Response

AT+CCLK=?

OK

 

 

Read command

Response

AT+CCLK?

+CCLK: <time>

 

OK/ERROR/+CME ERROR

 

Parameter:

 

<time>: string type value; format is "yy/MM/dd,hh:mm:ss", where characters

 

indicate year (two last digits), month, day, hour, minutes, seconds;

 

e.g. 6th of May 2001, 22:10:00 hours equals to “01/05/06,22:10:00"

 

 

Write command

Response

AT+CCLK=<time>

OK/ERROR/+CME ERROR

 

Parameter:

 

<time> see read command

 

 

Reference

GSM 07.07

Note

•<time> is retained if the device enters the Power Down mode via AT^SMSO (pg. 192).

•<time> is lost if power is totally disconnected and if no separate battery back-up for the clock is provided via the ZIF cable. In this case, the clock starts with <time> = “00/01/01,00:00:00” upon next power-up.

•See AT+CALA, pg. 56.

•When the GSM engine wakes up to Alarm mode, the system takes 1s to re-initialize the RTC and to update the current time. Therefore, it is rec- ommended to wait 1s before using the AT+CCLK command (for example 1s after ^SSYSTART has been output).

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Siemens MC35 manual AT+CCLK Real Time Clock, At+Cclk=?, At+Cclk?, +CCLK time
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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.
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