Document: LT0273

MX4428 MXP Engineering / Technical Manual

 

Device Processing

9.24DEVICE INITIALISATION AND POLLING

The following actions are taken for each device when it powers up or when the MXP powers up. One action is performed on (or instead of) each 5 second poll.

•If fault bit was received, use HEALTH command to verify that fault was caused by powerup.

•Use READEE command to check type.

•Send SETALL command to select which values are returned, to set the interrupt thresholds (if any), set the Digital Outputs required for correct operation and set the status register for LED blink if required.

•Use READEE command to get factory calibration value for Photo and CO devices.

•Use READEE command to get factory “clean air” value for Photo and CO devices.

•Use READEE command to get the stored LED blink bit. This may require the SETALL command to be sent again.

Once this is complete FASTAV commands will be used to read the analog inputs (FASTDI command for RIM) on each poll, except for the occasional use of the SETOUT command to Reset / unreset the DIM detectors and as a background refresh of digital outputs.

SETOUT commands to set changed digital outputs will be interspersed between polls, with no request to return data.

GLOBADR commands are used to find all devices during a “Learn” initiated by the MX4428 and “Diagnostic Pollscan” initiated by the MX4428 or MXP diagnostic terminal.

(Refer to the “NOSEx SPECIFICATION” document for more details of the above commands.)

Issue 1.5

24 March 2006

Page 9-19

Page 128 Page 130
Page 129
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Tyco MX4428 technical manual Device Initialisation and Polling
Page 128 Page 130

MX4428 specifications

The Tyco MX4428 is a cutting-edge device known for its robust performance in the realm of wireless communication and sensor acquisition. Tailored for applications in various sectors, the MX4428 is particularly well-suited for industrial automation, environmental monitoring, and smart city initiatives. With its advanced features, the device has gained tremendous popularity among engineers and developers looking for reliability and efficiency in data transmission.

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The MX4428 utilizes a highly efficient radio protocol that enhances data throughput while reducing power consumption. This asymmetric data transmission method allows for low-duty cycle operation, extending battery life and autonomy. The device's energy efficiency is particularly beneficial in applications where frequent battery replacement would be impractical, such as in environmental sensors and agricultural monitoring systems.

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In summary, the Tyco MX4428 is a powerful and versatile device that boasts a combination of long-range communication, low power consumption, and comprehensive sensor integration capabilities. Its robust security features further enhance its appeal for critical applications across various industries. Whether for industrial, environmental, or smart city use cases, the MX4428 stands out as a reliable solution that meets the demands of modern wireless communication landscapes.
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