
antrax Datentechnik GmbH
Mode of Operation
General
The MultiBox i a multiple ocket outlet, wherea the five outlet available can be witched
independently from each other by the control PC.
On channel 1 an integrated Watchdog can be activated. Furthermore the MultiBox can be configured
uch that channel 1 operate a ma ter outlet and the channel 2 … 5 operate a o dedicated lave (i.
e. if a con umer i witched ON by the ma ter outlet, the lave outlet "follow" to witch ON their
device ).
With the help of a Watchdog one can recogni e whether a program i correctly running on a PC or
whether it wa interrupted by an internal (e.g. program bug) or external (e.g. interfering impul e of
the electric power upply) error ource. Precondition however i that the program being ob erved
regularly contact the Watchdog (triggering). If triggering fail to appear (becau e of hang-up of the
program for example), the Watchdog initiate a problem olving. Generally thi i a hardware re et of
the computer or witching OFF and back ON of the power upply.
Watchdog
The MultiBox i connected via the connector cable to a erial or USB interface of a PC that i to be
equipped with the Watchdog functionality.
CAUTION: In both ca e (connected via erial or USB interface) the MultiBox i addre ed a a COM
port by the oftware! The USB driver u ed provide a virtual COM port the control oftware – i. e. the
MultiBox can therefore be addre ed a ea ily a a erial device.
Via a erial interface for output 1 at the MultiBox the computer oftware et
•the time TR (re-triggering mu t be within thi time period),
•the time TA (how long mu t the MultiBox remain hut off at Watchdog event) and
•the time TF (within thi time period after the Watchdog event the triggering mu t be re tarted)
on and regular triggering of the MultiBox within the et time period i executed.
The Watchdog i activated when the monitored computer i not reporting within the et time period
(TR). In uch ca e the MultiBox interrupt the power to the connected computer at channel 1, waiting
for the et time (TA) and then witche the computer back on. The computer will boot and the oftware
i re tarted ( hould be et in the auto boot file).
Alternatively to the re tart of a computer after an error occurred, by u ing of the MultiBox, al o a
"external" device can directly be witched ON/OFF (e.g. modem, lamp , printer , mea uring
in trument , etc.). All witching time can be et within wide time limit .
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Ha enbrink 4, 32052 Herford, Germany Tel. +49 (0) 5221 929660 Fax +49 (0) 5221 9296628