
EN
sigfox MODBUS MASTER - Guide utilisateur / User guide version V1.0.1
49
Page
of 80
FR
1.4. Technical Specifications
1.4.1 General characteristics
Parameters
VALUE
Supply
DC 6-30V
Maximum supply
90mA
Working temperature
-25°C / +70°C
Dimensions
105 x 50 x 27mm
Weight
70g
Casing
IP 67
sigfox zone
RC1
MODBUS protocol used
Remote Terminal Unit (RTU)
1.4.2 Physical interface characteristics
Parameters
VALUE
Cables length
70cm
Number of wires on power cable
2 wires: +V, GND
External power supply voltage
DC 6-30V
Number of wires of sensor (slave) cable
6 wires : RTS/TX-, CTS/RX-, RX/RX+, TX/TX+, Ground, Sensor power
supply
RS232
3 useful signals: RX, TX, Ground (RTS and CTS are not handled)
Voltages shown are common mode voltages.
Voltages on inputs/outputs: +/-5V typ | +/-15V max
RS485
5 useful signals : TX-, RX-, RX+, TX+, Ground
Voltages shown are common mode voltages.
The product is master of the link: the slave must not inject voltage on
the bus!
Voltages on inputs/outputs: +/-1.5V typ (3V differential)
Polarization resistors: 560 Ohms
Termination resistor: 120 Ohms
Sensor (slave) power supply
= external power supply voltage
Current max returned to the sensor (provided that the power supply
used can provide this current)
500 mA