As seen in the example, by enabling of ”R” function the original ”C” function was automatically switched off and
it had no influence on the ”W” function.
Example of disabling of ”W” function and corresponding record in the module configuration summary:
RF Driver flags:
RW
sysmon>/F -W
RF Driver flags:
R
As seen in the example, disabling of ”W” function had no influence on the ”R” function.
Example of command for common setting of ”W” and ”G” functions and corresponding record in the module
configuration summary:
RF Driver flags:
R
sysmon>/F +W +G
RF Driver flags:
RWG
Example of command for switching of anti-collision protection to ”C” mode together with disabling of ”G” function
and corresponding record in the module configuration summary:
RF Driver flags:
RWG
sysmon>/F C -G
RF Driver flags:
CW
When the
”
Full anti-collision protection”
function is switched on, the module opens its receiver for an instant
before broadcasting and
”
listens” whether the frequency channel is clear.
If a carrier frequency is detected or
transmission of a frame is underway, the module postpones broadcasting of the message for a moment and then tries
again. This procedure protects transmission of the message from interference with disturbing signal on the same
frequency as well as from collision with broadcasting of other modules.
When the
”
Limited anti-collision protection”
function is switched on, the module goes to transmission if there
is no other frame underway (but, unlike the full protection, detection of carrier is not performed). This procedure
does not protect broadcasting against disturbing signal, but protects transmission of the message from collision with
broadcasting of other modules. This setting is recommended in this case when the module works in the environment
with permanent disturbance of carrier frequency and it has no sense to waste time (and battery power) by waiting
for clear channel.
When the
”
Wake On Radio”
(WOR) function is enabled, the module can be anytime remotely activated from
hibernated state. As the WM868-MS-LP-H module is permanently active, this function has no importance and
should be switched off.
The
”
/X”
command is intended for setting of
”
receiving time interval”, what is the interval immediately after
sending a message in which the module’s receiver is active. The interval is set in
”
system units” of 50 ms (20 units
= 1 second). As the WM868-MS-LP-H module’s receiver is permanently active, this function has no importance.
Important note!
Even the possibilities of transceiver settings are identical for all modifications of the WM868-MS-
LP-H module, older versions of the module can have a
different way of choosing of the required transceiver
mode
. In this manner the switching of transceiver mode should be performed by using of
”/f[+-]”
command (the
same as for setting of repeating mode), where the set of flags is supplemented with following flags for seting of
transceiver mode:
- flag
”C”
for full anti-collision protection setting (Carrier Detect)
- falg
”w”
for enabling of
”
Wake On Radio” (WOR) function
- flag
”G”
for switching of
”
High Gain” function (not used)
Switching to limited anti-collision protection mode can be performed by removal of ”C” flag from the configuration.
Switching from factory preset full anti-collision protection mode to the limited anti-collision protection mode can
be performed this way:
SLRF flags:
eCz
sysmon>//f -C
...
SLRF flags:
ez
Manner of transceiver settings control of the particular device is obvious from the summary of configuration com-
mands (
”
HELP”), that can be displayed by
”/?“
command.
WM868-MS-LP-H
16
