Murata Electronics North America DNT500FP Manuale Utente
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DNT900 - 11/05/08
RF_DataRate
- this sets the over-the-air RF data rate. DNT500’s with different RF data rates cannot
intercommunicate. The following codes are defined:
0x00 = 500 kb/s
0x01 = 200 kb/s
0x02 = 115.2 kb/s
0x03 = 38.4 kb/s
0xff = auto (default)
0x01 = 200 kb/s
0x02 = 115.2 kb/s
0x03 = 38.4 kb/s
0xff = auto (default)
A setting of "auto" will cause a remote to scan all 4 possible RF rates for a network to join. A base set to
"auto" will run at the maximum rate of 500 kb/s. A change to this setting on the base will trigger a reboot
of the network.
"auto" will run at the maximum rate of 500 kb/s. A change to this setting on the base will trigger a reboot
of the network.
HopDuration
- this sets the duration of the hop frame. The duration is set as a 12-bit value,
0.05 ms/count.
InitialNwkID
- selects the initial network ID that the radio will start (if a base) or join (if a remote). A
value of 0xFF instructs a remote to operate in 'promiscuous mode' and join any network it finds (if set
for a base, this will select the default network of 0x00.) The network ID also sets the base frequency at
which the hopping pattern starts, as illustrated by the following equation:
for a base, this will select the default network of 0x00.) The network ID also sets the base frequency at
which the hopping pattern starts, as illustrated by the following equation:
FrequencyIndex[n] = HoppingPattern[n + 2*NetworkID mod 32]
This allows the user to coordinate frequency spacing of co-located networks to maintain a constant sepa-
ration as they hop.
ration as they hop.
SecurityKey
- this sets the 128-bit AES encryption key that will be used. The intent is for this to act like a
password that all radios in the network are configured with. To protect the key, this is a write-only parame-
ter for the user (always reads back as 0x2A). Refer to the Section 2.11 for further information.
ter for the user (always reads back as 0x2A). Refer to the Section 2.11 for further information.
SleepMode
- this parameter enables sleep mode, which may be used in conjunction with the automatic
I/O reporting feature to wake up on specified triggers. Sleep mode is only available for remotes, and the
channel access mode for the network must be one of the CSMA modes.
channel access mode for the network must be one of the CSMA modes.
WakeResponse Time
- this parameter sets the length of time that a remote in sleep mode will wait for a
response after sending an I/O report before going back to sleep, from a minimum of 10 ms to a maximum
of 2.5 seconds in 10 ms units. This time interval is set to allow the base host application to respond to a
remote with a packet before the remote returns to sleep. If this parameter is set to 0, the remote will stay
awake indefinitely after sending an I/O report.
of 2.5 seconds in 10 ms units. This time interval is set to allow the base host application to respond to a
remote with a packet before the remote returns to sleep. If this parameter is set to 0, the remote will stay
awake indefinitely after sending an I/O report.
WakeLinkTimeout
- this parameter sets the maximum length of time that a remote in sleep mode will
spend trying to acquire a link to its base station before going back to sleep, from a minimum of 100 ms to
25.5 s in 100 ms units. If this value is set to 0, the remote will stay awake and continue trying to link to its
base station indefinitely.
25.5 s in 100 ms units. If this value is set to 0, the remote will stay awake and continue trying to link to its
base station indefinitely.
TxPower
- Sets the transmit power level:
0 = 0 dBm or 1 mW (default)
1 = 10 dBm or 10 mW
2 = 20 dBm or 100 mW
3 = 24 dBm or 250 mW
4 = 27 dBm or 500 mW
5 = 30 dBm or 1000 mW (1 W)
1 = 10 dBm or 10 mW
2 = 20 dBm or 100 mW
3 = 24 dBm or 250 mW
4 = 27 dBm or 500 mW
5 = 30 dBm or 1000 mW (1 W)