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sigfox ANALOG - Guide utilisateur / User guide version V2.0.0
Explanation of thresholds and hysteresis:
FR
EN
The monitoring period by the sensors is fixed at 10 minutes (to change this value, contact the Technical Support
Department).
The settings associated with this mode of operation are:
•
The transmission periodicity (zero in this usage situation) (register 301).
•
The presence and type of external sensor (registers 320 and 322).
•
The configuration of the events (registers 321 and 323).
•
The high alarm threshold channel A (register 324).
•
The high alarm hysteresis channel A (register 325).
•
The low alarm threshold channel A (register 326).
•
The low alarm hysteresis channel A (register 327).
•
The high alarm threshold channel B (register 328).
•
The high alarm hysteresis channel B (register 329).
•
The low alarm threshold channel B (register 330).
•
The low alarm hysteresis channel B (register 331).
A complete list of the registers can be found in paragraph 3.4.
E.g.:
Register
S301
S320
S322
S321
S323
S324
High alarm enabling
Value encoding
Decimal
Hexadecimal
Hexadecimal
Hexadecimal
Hexadecimal
Decimal
High threshold -
Low threshold +
Low alarm enabling
High alarm disabling
Value
Result
0
Event mode
0x02
Channel A configured for a sensor 4-20mA
0x01
Channel B configured for a sensor 0-10V
0x03
On channel A:
Detection of high and low thresholds
Detection of event on disabled digital input
No waiting period
0x02
On channel B:
Detection of high thresholds
Detection of event on disabled digital input
No waiting period
1 200 000
The value of the high threshold of channel A is:
1 200 000x10=12 000 000nA so 12mA
high threshold
high threshold hysteresis
Sensor value
low threshold hysteresis
Low threshold
Low alarm disabling
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