User's Manual

XTend™RFModule‐ProductManual
©2013DigiInternatonal,Inc. 28
FL (Software Flow Control) Command
<Serial Interfacing> The FL command is used to
configure software flow control. Hardware flow
control is implemented with the modual as the
GP01 pin (CTS
pin of the RF module), which
regulates when serial data can be tranferred to
the module.
FL Command can also be used to allow software
flow control to be enabled. The XON character used is 0x11 (17 decimal). The XOFF character
used is 0x13 (19 decimal).
FS (Forced Synch Time) Command
<RF Interfacing> The FS command only applies
to streaming data. Normally, only the first packet
of a continuous stream contains the full RF
initializer. The RF modules then remain
synchronized for subsequent packets of the
stream. This parameter can be used to
periodically force an RF initializer during such
streaming. Any break in UART character reception
long enough to drain the DI Buffer (UART receive buffer) and cause a pause in RF data
transmission will also cause an RF initializer to be inserted on the next transmission.
FT (Flow Control Threshold) Command
<Serial Interfacing> The FT command is used to
set/read the flow control threshold. When FT
bytes have accumulated in the DI buffer (UART
Receive), CTS
is de-asserted or the XOFF
software flow control character is transmitted.
GD (Receive Good Count) Command
<Diagnostics> The GD command is used to set/
read the count of good received RF packets. Its
parameter value is reset to 0 after every reset
and is not non-volatile (The parameter value does
not persist in the RF module's memory after a
power-up sequence). Once the "Receive Good
Count" reaches its maximum value (up to
0xFFFF), it remains at its maximum count value
until the maximum count value is manually
changed or the module is reset.
The GD parameter is not reset by pin, serial port or cyclic sleep modes.
HP (Hopping Channel) Command
<Networking & Security> The HP command is
used to set/read the RF module's hopping channel
number. A channel is one of three layers of
filtration available to the module.
In order for modules to communicate with each
other, the modules must have the same channel
number since each channel uses a different
AT Command: ATFL
Binary Command: 0x07 (7 decimal)
Parameter Range:0 - 1
Default Parameter Value: 0
Number of bytes returned: 1
AT Command: ATFS
Binary Command: 0x3E (62 decimal)
Parameter Range:0 - 0xFFFF
[x 10 milliseconds]
Default Parameter Value: 0
Number of bytes returned: 2
AT Command: ATFT
Binary Command: 0x24 (36 decimal)
Parameter Range:
0 - (DI buffer size minus 0x11) [Bytes]
Default Parameter Value: DI Buffer size minus
0x11 (17 decimal)
Number of bytes returned: 2
AT Command: ATGD
Binary Command: 0x10 (16 decimal)
Parameter Range: 0 - 0xFFFF
Default Parameter Value: 0
Number of bytes returned: 2
Related Commands: ER (Receive Error Count)
AT Command: ATHP
Binary Command: 0x11 (17 decimal)
Parameter Range: 0 - 9
Default Parameter Value: 0
Number of bytes returned: 1
Related Commands: ID (Modem VID), DT
(Destination Address), MK (Address Mask)