Periodic configuration of a Dry contact (ARF8170)

This tutorial focuses on the periodic configuration of a Dry Contact sensor (ARF8170) in LoRaWan and SIGFOX via the IoT Configurator.

The product can be used to count and periodically transmit events occurring on the inputs and/or on the time counter. The parameters associated with this operating mode are :

• Transmission period for event counter (register 301)
• Transmission period for time counting (register 328)
• Digital input/output configurations (registers 320 to 323)

Example for event counters:

In this example, the configuration of the various digital inputs/outputs (S320 to S323) is the default. 

• Digital input configurations (S320 to S323) = 2-state detection input
• Transmission period for event counter (S301) = 60

The product will send a 0x40 periodic frame every 10 minutes (60 x 10secs) including the number of opening and closing detections for the digital input (1 to 4).

NOTE: Each time a periodic frame is sent, the counters are reset to zero for all the inputs.

Example for time counters :

The product also allows the transmission of a periodic frame containing the time spent (in seconds) in a state other than the current state. This frame contains only the time counters of TORs configured with high or low edge detection. 

• Digital input configurations (S320 to S323) = High state detection input
• Transmission period for time counting (S328) = 720

In this example the product will send a 0x59 periodic frame twice a day (720 x 10mins) the time that the input TORs have spent (in seconds) in the low state.

NOTE: The counters are not reset each time a frame is sent.

The two periodic functions can be configured and used at the same time