Chapter 3
Configuring for Ethernet
Airnet II Particle Sensor Operations Manual
Page 3-5
Set que(ue) x
When used with Facility Net, you can enter a data queue size in order to buffer data
while the unit is not connected.
The value of
x
can be set anywhere between 1 and 1440. The queue size to enter
depends on the specific application. In general, the value should be made large
enough to minimize data loss when disconnected, but not so large as to create
significant delays in the reception of real-time data when reconnected.
When a data queue size is set greater than one, the Airnet II particle sensor will:
•
Continue sampling if it was initially started, and then disconnected
•
Queue up to the number of samples defined by the queue size
•
Unload the queued data in chronological order when reconnected
•
Periodically delete elements of the queue for which Facility Net has received the
data
When the queue size is set to one (1), the Airnet II particle sensor reverts to a mode
where there is no data queue, the unit reboots when disconnected and parameters
specific to batch processing are enabled.
Set mode x
The unit will run under one of two possible operational modes: PMS Operational Mode
or Modbus Mode. When shipped from the factory, the unit is in the PMS Operational
Mode.
•
When the value of
x
is set to zero (
0
), the unit will reboot into the PMS Operational
Mode.
•
When the value of
x
is set to two (
2
), the unit will reboot into the Modbus Mode.
Select the PMS Operational Mode for use with Facility Net calibration, allowing for the
use of a data queue.
Select the Modbus mode to communicate via Modbus TCP (see
Set sam (ple) x y
This command sets the minimum sample interval to
x
seconds and the maximum
sample interval (used when zero particles are detected) to
y
seconds. It is not required
to set the sample interval when running the Airnet II particle sensor with Facility Net.
Write
Saves the most recent changes.
You must send this command
after setting up the
instrument, or your parameters will be lost when the sensor is de-energized.
NOTE:
When the programming is complete, record these settings for
future reference.
