FLOWSIC100 Operating Instructions
Gas Velocity Monitor
Product Description
16 © SICK MAIHAK GmbH · Germany · All rights reserved 8012513/03-2008
2.2.2 Communication between Sender/Receiver Units and Control Unit
Standard Version
The two sender/receiver units work as master and slave. The master-FLSE has a second in-
terface to be able to separate the communication on the slave-FLSE and on the MCU well
defined. The master triggers also the slave and controls the measurement regime. The MCU
can demand the measured values from the master units independently of the trigger cycle
(asynchronous).
For the cabling, the connection box in which the separation of the interfaces takes place,
has to be installed at the master-FLSE.
Connection box isoptional for type PR and PRAC (for long cable lengths).
Fig. 2.2: Standard version (1 Sensor)
Bus version with several connected measuring systems
Fig. 2.3: Bus connection FLSE100 - MCU (2 Sensors)
With the bus version, two autarkic measuring paths (2 x 2 FLSE100) can be connected to a
control unit MCU for a 2-path-measurement. The MCU calculates both measuring paths to
one measurement result.
Notes: • For bus wiring the manufacturer set termination has to be deactivated in those system
components, that are not on the cable end (see Service Manual Section 3.1).
• Other sensor type (e.g. sensor for dust measurement) can be connected additionally to
the MCU too.
MCU
FLSE100
Master
FLSE100
Slave
FLSE100
Master
FLSE100
Slave
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