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參數資料
| 型號： | XIB-E |
| 廠商： | Digi International/Maxstream |
| 文件頁數： | 33/64頁 |
| 文件大小： | 1858K |
| 描述： | BOARD INTERFACE ETHERNET |
| 標準包裝： | 1 |
| 附件類型： | 接口板 |
| 適用于相關產品： | XStream 和 Xcite 收音機 |
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SY (Time before Initialization) Command
AT Command: ATSY
Binary Command: 0x17 (23 decimal)
<Networking & Security> SY Command keeps a
communication channel open as long as module
transmits or receives before the active connection
expires. It can be used to reduce latency in a
query/response sequence and should be set 100
ms longer than the delay between transmissions.
Parameter Range: 0 0xFF
This command allows multiple XStream Modules
to share a hopping channel for a given amount of time after receiving data. By default, all
packets include an RF initializer that contains channel information used to synchronize any
listening receivers to the transmitters hopping pattern. Once a new module comes within range,
it is able to instantly synchronize to the transmitter and start receiving data. If no new modules
are introduced into the system, the synchronization information becomes redundant once
modules have become synchronized.
[x 100 milliseconds]
Default Parameter Value: 0 (Disabled - channel
initialization info sent with each RF packet.)
Number of bytes returned: 1
SY Command allows the modules to remove this information from the RF Initializer after the
initial synchronization. For example, changing the SY Parameter to 0x14 (20 decimal) allows all
modules to remain in sync for 2 seconds after the last data packet was received. Synchronization
information is not re-sent unless transmission stops for more than 2 seconds. This command
allows significant savings in packet transmission time.
Warning: Not recommended for use in an interference-prone environment. Interference can break up
the session and the communications channel will not be available again until SY time expires.
With SY set to zero, the channel session is opened and closed with each transmission - resulting
in a more robust link with more latency.
TO (DO2 Timeout) Command
AT Command: ATTO
Binary Command: 0x31 (49 decimal)
Parameter Range: 0 0xFFFF [x 1 second]
Default Parameter Value: 3
Number of bytes returned: 2
Minimum Firmware Version Required: 4.30
<Serial Interfacing>DO2 output will return to
default after no DI2 status information is
received during the timeout period.
Use with CS = 2 or 4.
TR (Transmit Error Count) Command
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)
Minimum Firmware Version Required: 4.22
<Diagnostics> Read number of retransmit
failures. The number of retransmit errors is
incremented each time a packet is not
acknowledged within the number of retransmits
specified by the RR (Retries) parameter. It
therefore counts the number of packets that were
not successfully received and have been dropped.
The TR parameter is not non-volatile and therefore is reset to zero each time the module is reset.
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