FS1308 Transmitter particulate matter/particles PM2.5/PM10, digital output Modbus

The laser-based fine dust / particle sensor detects and quantifies particles PM2.5 / PM10 in the ambient air and converts the result into a BUS signal (Modbus RTU). For the optional relay output, the switching threshold and hysteresis can be specified per register. Also for the optional display, adjustments such as display content, orientation in 90 ° increments, mode of the backlight, etc. can be specified per register.
As special functions a series of defined measured values from other bus-participants (also cross-manufacturers) can be shown in the display. To display measured values from other bus-participants these are entered into the corresponding register by the bus-Master. The optional alternating contact can be configurated for measured values from other bus-participants.
The configuration of address, transmission mode/speed, terminating resistor and master/slave function of the bus-devices can easily be done using the innovative DIP switch technology. Thus devices can quickly and easily integrated into the system and later parameterised via the master.
The bus-devices can even be reset to the works settings during operation of the master. Thus the basic functionality of the device is recreated in a matter of seconds. This can be necessary in the event of incorrect parameterisations of, e.g. offset, switching threshold, display modes etc..
By means of the FS master/slave topology autarkic nodes without additional SPS master can be installed within the device series. Hereby a bus-device assumes the master function in the node. This requests the measured values from other bus-participants, automatically enters these into the corresponding register and shows them in the internal display. Furthermore the master can evaluate and operate additional actuators in the device series (analogue in- and outputs, relay station).