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sigfox ANALOG - Guide utilisateur / User guide version V2.0.0
In the example in grey this gives:
• Byte 2=0x02: register 320, channel A configured for a 4-20mA sensor
• Bytes 3 to 5=0x0C3500=800,000 in decimal i.e. A value measured on channel A of:
800,000,x10=8,000,000nA i.e. 8mA
• Byte 6=0x01: register 322, channel B configured for a 0-10V sensor
• Bytes 7 to 9=0x4C4B40=5,000,000 in decimal i.e. a value measured on channel B of: 5,000,000 µV i.e. 5V
4.1.5
Reply frame to a register value request in a downlink frame
Following reception of a downlink frame with the code 0x40, the frame 0x31 is transmitted.
It contains all the values of the registers requested in the downlinl frame 0x40.
•
Frame (0x40) sent to the product (downlink) :
0
1
Code
CONFID2
0x40
CONFID1
The CONFIDX (8bits) fields represent the indices of the registers to be sent. The corresponding register is 300 +
CONFIDX value.
•
Response frame (0x31) from the product:
0
1
Code
Cf. Status
VALUE1
0x31
Status
In this example: CONFID1 is a 2-byte register, CONFID2 a 1-byte register and CONFID3 a 2-byte register.
If an error is detected in the request, the returned 0x31 frame will be empty.
4.1.6
Data Frame
This frame (0x42) contains the values measured on the different sensors
0
1
2
Code
Status
PAYLOAD
0x42
Cf Status
S320
0x42
0xA2
0x02
Description de la trame :
• Byte 2: Type of the sensor on channel A. Configured by the user (register 320).
• Bytes 3 to 5: Value measured on channel A.
• If the type of sensor is 0-10V: The value is expressed in µV
• If the type of sensor is 4-20mA: The value is expressed in nA
• Byte 6: Type of the sensor on channel B. Configured by the user (register 322).
• Bytes 7 to 9: Value measured on channel B.
• If the type of sensor is 0-10V: The value is expressed in µV
• If the type of sensor is 4-20mA: The value is expressed in nA
In the example in grey this gives:
• Byte 2=0x02: register 320, channel A configured for a 4-20mA sensor
• Bytes 3 to 5=0x0C3500=800,000 in decimal i.e. A value measured on channel A of:
800,000,x10=8,000,000nA i.e. 8mA
• Byte 6=0x01: register 322, channel B configured for a 0-10V sensor
• Bytes 7 to 9=0x4C4B40=5,000,000 in decimal i.e. a value measured on channel B of: 5,000,000 µV i.e. 5V
2
3
4
PAYLOAD
CONFID3
X
2
3
4
PAYLOAD
VALUE1
VALUE2
3
4
Valeur lue sur le capteur voie
A
0x0C3500
5
...
X
X
5
...
VALUE3
VALUE3
5
6
7
S322
Valeur lue sur le capteur voie
B
0x01
0x4C4B40
7
CONFID7
11
X
8
9
FR
EN
10
X
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Table des Matières
