plmpower - control Insteon/X10 devices via SmartLabs PLM 2412S
plmpower --device serial-port
plmpower is a helper program for powerman which enables communication
with Insteon/X10 devices via SmartLabs Power Line Modem, model 2412S.
It is run interactively by the powerman daemon. It can also be useful
as a standalone tool for debugging X10/Insteon networks based on the
Note the addresses of your Insteon/X10 devices. Plug the PLM into an
AC outlet, preferably on the same electrical phase as the devices under
control. Devices are available to bridge phases if this is not
Attach the PLM’s serial port to your computer, and ensure that nothing
else is using the serial port such as the system console or getty(8).
Run plmpower and try the interactive commands below to see if the
devices respond reliably.
Once everything is working, configure powermand to run plmpower as a
coprocess as described in powerman.conf(5).
-d, --device serial-port
Specify the path to the special file connected to the PLM’s
-t, --timeout msec
Set the Insteon timeout to the specified number of milliseconds
-x, --x10-attempts number
Set the number of times to run every X10 command (default 3).
X10 does not provide an ACK/NAK mechanism like Insteon so we
cannot be certain that any particular X10 command completed,
therefore X10 commands are issued multiple times to increase
The following commands are accepted at the plmpower> prompt. Address
arguments may be Insteon (e.g. 1A.2B.3C) or X10 (e.g. G12).
help Display help on the available commands.
info Get info about the PLM.
reset Reset the PLM (clears the all-link db).
Turn on device.
Turn off device.
Query status of device (Insteon only).
Time round trip request/response to device (Insteon only).
PowerMan was originally developed by Andrew Uselton on LLNL’s Linux
clusters. This software is open source and distributed under the terms
of the GNU GPL.
powerman(1), powermand(8), httppower(8), plmpower(8), vpcd(8),
powerman.conf(5), powerman.dev(5), powerman-devices(7).