Murata DNT24 Series, Руководство по интеграции

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A basic DNT24 point-to-point system is suitable for many serial data applications. The default configuration of a
DNT24 is a remote with the serial port configured for transparent operation at 9.6 kbps, 8N1. To configure a basic
point-to-point system:
1. Configure one of the modules as a base by setting the DeviceMode parameter in Bank 0 to 0x01.
2. Set the MemorySave parameter in Bank 0xFF to 0xD2, which will save the DeviceMode parameter to EEPROM
and reset the module, enabling base operation.
3. All other parameters may be left at their default values.
4.3 Configuring a Basic Point-to-Multipoint Point System
A basic DNT24 point-to-multipoint point systems is suitable for many serial data applications where multiple remotes
are used. The default configuration of a DNT24 is a remote with the serial port configured for transparent operation at
9.6 kbps, 8N1. To configure a basic point-to-multipoint system:
1. Configure one of the modules as a base by setting the DeviceMode parameter in Bank 0 to 0x01.
2. If the host application driving the base will individually communicate each remote, set the ProtocolMode parame-
ter in Bank 4 of the base to 0x01. This step is not required if messages from the base to the remotes will always
be broadcast and/or the base does not need to know the MAC address of the remote sending a message.
3. Set the MemorySave parameter in Bank 0xFF to 0xD2, which will save the DeviceMode parameter to EEPROM
and reset the module, enabling base operation.
4. All other parameters may be left at their default values.
5. If the host application driving the base will individually communicate with each remote, the MAC address for each
remote can be obtained from announce packets, heartbeat packets, a ForceDiscover command, or by reading or
scanning the MAC address from the label on top of each remote.
4.4 Configuring a Customized Point-to-Point or Point-to-Multipoint System
The DNT24 includes many configuration parameters that allow extensive customization of a point-to-point or point-to-
multipoint system. Most applications will require only a few of these parameters be changed from their default values. But
for those applications that need them, MURATA recommends the following configuration sequence. Skip the configuration
steps where the default parameter value is satisfactory.
1. Configure one of the modules as a base by setting the DeviceMode parameter in Bank 0 to 0x01.
2. Set the optional AES security key in all system radios by loading your selected 16-byte string into the SecurityKey
parameter in Bank 0 (the default is 16 bytes of 0x00).
3. Select the frequency band of operation by setting the FrequencyBand parameter in Bank 1 of the base radio as
desired (the default is Band 0).
4. Set the transmitter power level as needed in all radios by setting the TxPower parameter in Bank 0 (the default is
63 mW).
5. Configure the system ID in all radios by setting the SystemID parameter in Bank 0 (the default is OK if there is no
chance of overlapping systems).
©2009-2014 by Murata Electronics N.A., Inc.
DNT24 Integration Guide R2.0 - 10/27/14
www.murata.com