www.aquantis.org
Microfreeze User’s Guide
12
6.3
Data interconnection
The data streams between the computer unit, distance sensor, emitter and receiver units are shown in Figure 5.
From the computing unit, an ethernet cable which can be directly connected to a pc or a network. More
information can be found in the next section
Connectivity
.
F
IGURE
5:
D
ATA SIGNAL INTERCONNECTIONS
.
7
Operation
7.1
Sensor power-on and shutdown
7.1.1
Power on
The Microfreeze is switched on by plugging the power cord in a socket or by supplying the power via the PLC
system. The sensors operating system boots up automatically upon switching on. This start-up phase takes a few
minutes. If the system does
n’t respond, proceed to section
Unexpected stop and restart 9.1 Unexpected stop
CAUTION
: If any smoke or unusual odours are detected, disconnect the device from the electrical outlet and
contact Aquantis immediately. See page 2 for the appropriate contact information.
7.1.2
Shutdown
The Microfreeze sensors software needs to be shutdown properly prior to cut off its mains power. The system is
turned off via the webserver
’s shutdown
-
button of by writing a “0” to the Modbus holding register 11. Ensure
that the sensor mains power is kept on for at least 2 min after the shutdown process is initiated. Incorrect closing
may affect the proper functioning of the device. In case the power is switched off too early, check on the next
start up if the software boots up and functions normally.