ITalks ERS serie LoRaWan wireless sensor
Operating manual, technical specifications, setting parameters
page 5 of 12 ITalks ERS serie manual MCS V5 2018-09
4. Sensor application Sensor startup
When the sensor starts up it loads conguraon from the internal memory and
merge it with user conguraon. When the conguraon is done the sensor
writes the new conguraon to the NFC chip. The sensor always writes new
conguraons to the NFC chip when something changes in the sensor or if
NFC data is corrupted by a NFC writer or phone. The sensor always writes new
conguraon to NFC chip at startup. When conguraon is done the sensor tries
to join the network if OTAA (Over The Air Acvaon) is enabled. The sensor led
ashes orange when it tries to join a network. The sensor tries to join the network
every 10 second and increases the join mer at every failed aempt by
10%, up to maximum 1 hour. Aer startup, conguraon and join the sensor
enters sampling mode.
4.1 NFC read/write
When reading or wring NFC conguraon data to the sensor it starts a mer and
delays its acon x seconds. It delays its acon because of the bad connecon that
can be in NFC communicaon. Types of bad connecon can be distance, locaon
or rapid movement. Aer the delay the sensor determines if the NFC data has
changed or not. If the data has change the sensor reboots and starts from power
up. When wring data to the sensor try to get the best connecvity as possibly.
Locate the NFC antenna of the phone and sensor. Keep the 2 devices as close as
possible and don’t move them while wring or reading. When you have wrien
data to the sensor, let the sensor reboot and restart before trying to write again.
You can always validate your sengs by reading the NFC data aer the sensor has
restarted.
OPERATING MANUAL ERS
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Sensor application
Sensor startup
When the sensor starts up it loads configuration from the
internal memory and merge it with user configuration. When
the configuration is done the sensor writes the new
configuration to the NFC chip. The sensor always writes new
configurations to the NFC
chip when something
changes in the sensor or if
NFC data is corrupted by a
NFC writer or phone. The
sensor always writes new
configuration to NFC chip at
startup. When configuration
is done the sensor tries to
join the network if OTAA
(Over The Air Activation) is
enabled.The sensor led
flashes orange when it tries
to join a network. The sensor
tries to join the network
every 10 second and
increases the join timer at
every failed attempt by
10%, up to maximum 1 hour.
After startup, configuration
and join the sensor enters
sampling mode.
OPERATING MANUAL ERS
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support@elsys.se
NFC read/write
When reading or writing NFC configuration data to the sensor
it starts a timer and delays its action x seconds. It delays its
action because of the bad connection that can be in NFC
communication. Types of bad connection can be distance,
location or rapid movement. After the delay the sensor
determines if the NFC data has changed or not. If the data
has change the sensor reboots and starts from power up.
When writing data to the sensor try to get the best
connectivity as possibly. Locate the NFC antenna of the
phone and sensor. Keep the 2 devices as close as possible
and don’t move them while writing or reading. When you have
written data to the sensor, let the sensor reboot and restart
before trying to write again. You can always validate your
settings by reading the NFC data after the sensor has
restarted.
