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36
MDS TransNET Ref. Manual
MDS 05-2708A01, Rev. F
LED [ON, OFF]
Enable/Disable PCB LEDs
LED ON
enables/disables the PCB board mounted LEDs seen only with the
transceiver’s covers removed.
LED
is normally
OFF
, it may be useful to have
them on for testing the radio with the covers removed. Note: the
external
LEDs will be dimmer if the
LED
function is left
ON
.
The
LED
command also affects the operation of the LEDs in the “Low-Power
Mode” (
LPM
). When
LED
is
OFF
, the radio keeps the
PWR
and
SYNC
LEDs
extinguished.
LPM [1, 0]
Low-Power Mode—Masters Only
This feature trades increased latency to gain power savings. Low-power
mode (LPM) automatically saves power at a Remote by instructing the
Remote to shutdown for large periods of time in between
SYNC
messages.
Master transmissions are automatically blocked while the Remotes are
asleep. Note, both Masters and Remotes are adaptive and will suppress a
normal sleep interval if data transmission or reception is in progress.
•
LPM 1
at the Master enables low-power mode network-wide; all
Remotes pick it up and start saving power by automatically sleeping.
LPM 1
can work in conjunction with the AT dialing feature. The dialed
unit will be forced awake; all others will sleep.
•
LPM 0
at the Master to disable low-power mode (Default setting).
The
SLEEP
command must be enabled for LPM to function. Further, when
you enable LPM, the LEDs on the Remote radio dim even though the LPM
function is not properly enabled by turning on
SLEEP
. For more information,
see
“Low-Power Mode (LPM)—Master Enabled”
“Low-Power Mode versus Remote’s Sleep Mode”
.
LPMHOLD [0–1000]
Low-Power Mode Sleep Time
Used to give an RTU time (0-1000 ms) to respond before the radio goes to
sleep. Value determines how long to suppress auto-sleep following reception
of the last character sent out of the RXD serial data port.
NOTE:
Any values entered will be rounded to the nearest multiple of 4 ms.
To verify the exact hold time, enter
LPMHOLD
, the response will give you the
value currently being used.
MODE [M, R, X]
Radio Operating Mode
The
MODE
command sets or displays the operating mode of the radio. A
Master radio is set by
MODE M
; a Remote set by
MODE R
, and an Extension
is set by
MODE X
.