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DNT2400 - 08/18/09
01
0B
CSMA_RemtSlotSize
R/W
1
1..255
64
01
0C
CSMA_BusyThreshold
R/W
1
1..255
20
01
0D
RangingInterval R/W
1
0..255
0 = disable
01
0E
AuthMode R/W
1
0..3
0 = authentication disabled
01
0F
PeerReplyTimeout
R/W
1
8 hops
Bank 1 holds configuration parameters to be input to the base only. The base passes these parameters to
the remotes as needed. The exception is the ARQ_AttemptLimit parameter. If ARQ_Mode bit 1 is set to 1
at the base, the ARQ_AttemptLimit parameter can be set in the remotes and used.
FrequencyBand - this parameter selects the frequency hopping subband. Nine subbands are available,
as shown below. Note that operation in France is limited to subbands 0x04, 0x05 and 0x07.
Subband Channels
Frequency
Range(s)
Notes
0x00
37
2409.3-2467.1 MHz
General purpose 37 channel subband
0x01
17
2441.1-2467.1 MHz
17 channel subband, avoids 802.11b/g channels 1-4
0x02
17
2409.3-2416.6 MHz, 2451.2-2467.1 MHz
17 channel subband, avoids 802.11b/g channels 5-6
0x03
17
2409.3-2426.7 MHz, 2461.3-2467.1 MHz
17 channel subband, avoids 802.11b/g channels 7-8
0x04 17
2409.3-2435.3
MHz
17 channel subband, avoids 802.11b/g channels 9-10,
also for use in France
0x05 21
2409.3-2441.1
MHz
21 channel subband, avoids 802.11b/g channels
11-13, also for use in France
0x06
21
2428.1-2461.3 MHz
21 channel subband, avoids 802.11 b/g channel 1
0x07 15
2409.3-2432.4
MHz
15 channel subband, avoids 802.11b/g channels
8-13, also for use in France
0x08 15
2433.9-2455.6
MHz
15 channel subband, avoids 802.11b/g channels
1-2 and 13
0xFF
15 to 37
Auto
Autoscan for remote to match base
AccessMode - this sets the channel access mode that remotes will use to communicate with the base:
Access Mode
Description
Max # of Remotes Remote Slot Size
0
Polling
unlimited
manual
1
CSMA
unlimited
manual
2 (default)
TDMA dynamic slots
up to 16
automatic
3
TDMA
fixed
slots
up
to
16
automatic
4
TDMA with PTT
up to 16 +
automatic
unlimited listen only
BaseSlotSize - This parameter set the maximum number of user data bytes that the base can send on a
single hop. This value must be set by the user for all access modes. The default value is 50 bytes.
LeasePeriod - this sets the duration in seconds for leases that remotes receive from the base. If a period
of zero is specified, then lease functions are disabled. The minimum valid lease period is two seconds.
Remotes will attempt to renew their leases at an interval equal to half the lease period. For example, if the
lease period is set to four seconds, remotes will renew their leases every two seconds.
ARQ_Mode - this sets the ARQ mode for delivery of application messages. In ARQ mode, an ACK is
expected from the receiving radio for each message addressed and sent to it. If no ACK is received, up to
ARQ_AttemptLimit, attempts to send the data will be made, after which the message is discarded. In
redundant broadcast mode, each broadcast message is sent exactly ARQ_AttemptLimit times. No ACKS
are sent or expected. The following bit options control this function:
bits 7..2
Not used
bit 1
If set to 0, the base can pass a new ARQ_AttemptLimit to the remotes
If set to 1, the remotes use their own ARQ_AttemptLimit in Bank 1
bit 0
If set to 1, ARQ mode is enabled for Protocol mode; the base will send broadcast packets ARQ_AttemptLimit
times instead of once. If set to 0, broadcast packets are sent once
