PROFIBUS Connection
M12 circular connector
The M12 socket is inverse coded, and has five pins. Pin 1 is 5 VDC and 3 is GND for the active termination resistor. These must never be misused for other functions, as this can lead to destruction of the device.
Pin 2 and pin 4 are the PROFIBUS signals. These must never be swapped over, as this will prevent communication. Pin 5 is the shield, and this is capacitatively coupled to the Fieldbus Box chassis.
M12 socket pin assignment (-B310)
M12 socket/plug pin assignment (-B318)
Nine pole D-Sub
Pin 6 is 5 VDC und Pin 5 is GND for the active termination resistor. These must never be misused for other functions, as this can lead to destruction of the device.
Pin 3 and pin 8 are the PROFIBUS signals. These must never be swapped over, as this will prevent communication.
D-Sub socket pin assignment
PROFIBUS conductor colors
|
PROFIBUS conductors |
M12 |
D-Sub |
|---|---|---|
|
B red |
Pin 4 |
Pin 3 |
|
A green |
Pin 2 |
Pin 8 |
Connection of Fieldbus Box modules
The connection of the Fieldbus Box modules is done direct or via a T-piece (or Y-piece).
The B318 series does have a male and female connector, that means no external T-piece is required. The supply voltage (+5VDC) for the termination resistor is only supplied via the female M12 connector. The termination resistor ZS1000-1610 is only available with male connector.
Therefore the incoming PROFIBUS line should end in a female connector.
Two T-pieces are available:
- ZS1031-2600 with +5VDC on male and female connector for the termination resistor
- ZS1031-2610 with +5VDC only on the female connector