Diagnostics commands (MAC statistics and timeouts)
XLR PRO Radio Frequency (RF) Modem User Guide
35
Diagnostics commands (MAC statistics and timeouts)
Command
Name and description
Range
Default
DB
Received Signal Strength
. This command reports the
received signal strength of the last received RF data packet.
The DB command only indicates the signal strength of the
last hop. It does not provide an accurate quality
measurement for a multihop link. The DB command value is
measured in -dBm. For example if DB returns 0x60, then the
RSSI of the last packet received was -96dBm.
0-0xFF
[read-only]
0
EA
MAC ACK Timeouts
.
This count is incremented whenever a
MAC ACK timeout occurs on a MAC level unicast. Once the
number reaches 0xFFFF further events will not be counted.
The counter can be reset to any 16-bit value by appending a
hexadecimal parameter to the command.
0-0xFFFF
0
ER
Received Error Count
. This count is incremented whenever
a packet is received which contained integrity errors of some
sort. Once the number reaches 0xFFFF, further events will not
be counted. The counter can be reset to any 16-bit value by
appending a hexadecimal parameter to the command.
0-0xFFFF 0
GD
Good Packets Received
. This count is incremented
whenever a good frame with a valid MAC header is received
on the RF interface. Once the number reaches 0xFFFF, further
events will not be counted. The counter can be reset to any
16-bit value by appending a hexadecimal parameter to the
command.
0-0xFFFF
0
TR
Transmission Failure Count
. This count is incremented
whenever a MAC transmission attempt exhausts all MAC
retries without ever receiving a MAC acknowledgment
message from the destination node. Once the number
reaches 0xFFFF, further events will not be counted. The
counter can be reset to any 16-bit value by appending a
hexadecimal parameter to the command.
0-0xFFFF
0
UA
Unicasts Attempted Count
. This count is incremented
whenever a MAC unicast transmission occurs for which an
ACK is requested. Once the number reaches 0xFFFF further
events will not be counted. This value will not increment if RR
= 0. The counter can be reset to any 16-bit value by
appending a hexadecimal parameter to the command.
0-0xFFFF
0
%H
MAC Unicast One Hop Time
. The MAC unicast one hop
timeout in milliseconds. Changing MAC parameters can
change this value.
[read-only]
0x267