The Master Control unit SCM 4000 (Sensor Control Master) is the
central unit in a networked LIST system, controlling a max. of 31
slave-units, SCS 4010 (Sensor Control Slave) or SCU 800. The
master, which is the central control point of all the connected slaves,
accumulates all signals and messages generated by the LIST
system and passes these on if required. All messages generated by
the various slaves are stored chronologically in the master. The
master-slave communication uses a protocol with fixed addressing
and data transfer control. The master polls the slaves individually and
therefore detects problems in the master-slave communication
The SCM 4000 can either be operated via the keyboard situated on
the front panel or via a serial interface (RS232) attached to a terminal
or a PC / notebook with the respective terminal program.
LISTEC GmbH also offers LISTterm, a software package allowing
the comfortable setting of all system parameters. For visualisation of
system status, lists of messages and temperature values and for a
graphic display of the temperature data, LISTgraph II is available.
The SCM 4000 can be equipped with a telephone-modem for remote
diagnostics on request.