BB-ZP9D115RMLR-A Radio Modem
30
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. Zlinx Radio Modems 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 hopping
sequence. Different channels can be used to prevent modules in one network from listening
to transmissions of another.
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)