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9XTend? ? OEM ? RF ? Module ?‐? Product ? Manual ? v2.x4x ? [2007.01.04]
TR (Transmit Error Count) Command
<Diagnostics> The TR command is used to report
the number of retransmit failures. This number is
incremented each time a packet is not acknowl-
edged within the number of retransmits specified
by the RR (Retries) parameter. The number of
packets therefore are counted that were not suc-
cessfully received and subsequently discarded.
The TR parameter is not non-volatile and is reset
to zero when the RF module is reset.
TT (Streaming Limit) Command
<Networking & Security> The TT command is
used to set/read the limit on the number of bytes
that can be sent out before a random delay is
issued.
If an RF module is sending a continuous stream of
RF data, a delay is inserted which stops its trans-
mission and allows other modules time to trans-
mit (once it sends TT bytes of data). Inserted
Chapter ? 3 ?‐? RF ? Module ? Configuration
AT Command: ATTR
Binary Command: 0x1B (27 decimal)
Parameter Range: 0 - 0xFFFF
Default Parameter Value: 0
Number of bytes returned: 2
Related Commands: RR (Retries)
AT Command: ATTT
Binary Command: 0x1A (26 decimal)
Parameter Range: 0 - 0xFFFF
Default Parameter Value: 0 (disabled)
Number of bytes returned: 2
Related Commands: RN (Delay Slots)
random delay lasts between 1 & 'RN + 1' delay slots, where each delay slot lasts 38 ms.
The TT command can be used to simulate full-duplex behavior.
TX (Transmit Only) Command
<RF Interfacing> The TX command is used to set/
read the transmit/receive behaviors of the RF
module. Setting a module to TX-only (TX = 1)
may reduce latency because the transmitting
AT Command: ATTX
Binary Command: 0x3F (63 decimal)
Parameter Range: 0 - 1
module will never be confined to receiving data
from other modules.
Parameter
0
1
Configuration
TX & RX
TX-only
Default Parameter Value: 0
Number of bytes returned: 1
VL (Firmware Version - Verbose)
<Diagnostics> The VL command is used to read
the verbose firmware version of the RF module.
AT Command: ATVL
Parameter Range: returns string
Default Parameter Value: 0
Number of bytes returned: 2
VR (Firmware Version - Short) Command
<Diagnostics> The VR command is used to read
the firmware version of the RF module.
Note: Firmware versions contain four significant
digits - “A.B.C.D”. If B=2, the module is pro-
grammed for operation in Australia only.
? ? 2007 ? MaxStream, ? Inc.
AT Command: ATVR
Binary Command: 0x14 (20 decimal)
Parameter Range (read-only): 0 - 0xFFFF
Number of bytes returned: 2
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