8 Installation
8.5 Performing the electrical connection
The S431 has a 6-pole M12 connector for power supply and signal
output.
6-pole M12 cable with open ends included
Female (View from front)
Pin assignment connector plug M12 (6-pole)
Output
Pin 1
Pin 2
Pin 3
Pin 4
Pin 5
Pin 6
Analog
-I
isolated
-VB
+VB
SW
SW
+I
isolated
Modbus
GND
M
-VB
+VB
D+
D-
N/A
Wire color
Blue
White
Red
Yellow
Green
Black
Legend for pin assignment
GND
M
Ground for Modbus/RTU
-VB
Negative supply voltage
+VB
Positive supply voltage
+I
isolated
Positive 4 … 20 mA signal (isolated)
-I
isolated
Negative 4 ... 20 mA signal (isolated)
SW
Isolated pulse output (switch)
D+
Modbus/RTU data +
D-
Modbus/RTU data -
N/A
Not applicable
ATTENTION!
Do not screw the M12 connector using force.
Otherwise it might damage the connection pins.
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