PROFIBUS Connection

M12 round connector

The M12 socket is inverse-coded and has five pins. Pin 1 transfers 5 VDC, pin 3 transfers GND for the active termination resistor. These must never be misused for other functions, as this can lead to destruction of the device.

Pins 2 and 4 transfer the PROFIBUS signals. These must never be swapped over, as this will prevent communication. Pin 5 transfers the shield, which is capacitively connected to the base of the Fieldbus Box.

Pin assignment M12 socket (-B310)

PROFIBUS Connection 1:
Pin assignment M12 socket (-B310)

Pin assignment M12 socket/plug connector (-B318)

PROFIBUS Connection 2:
Pin assignment M12 socket/plug connector (-B318)

Nine-pin D-Sub

Pin 6 transfers 5 VDC, pin 5 transfers GND for the active termination resistor. These must never be misused for other functions, as this can lead to destruction of the device.

Pins 3 and 8 transfer the PROFIBUS signals. These must never be swapped over, as this will prevent communication.

Pin assignment of the PROFIBUS D-sub socket

PROFIBUS Connection 3:
Pin assignment of the PROFIBUS D-sub socket

PROFIBUS wire colors

PROFIBUS line

M12

D-Sub

B red

Pin 4

Pin 3

A green

Pin 2

Pin 8

Connection of the Fieldbus Box modules

The Fieldbus Box modules are connected either directly or via a T-piece (or Y-piece).

The B318 series features a socket and a plug connector, i.e. this is where the PROFIBUS is routed in the module. The supply voltage (+5 VDC) for the termination resistor is only present at the socket. The termination resistor ZS1000-1610 is only available as a plug connector.

The incoming PROFIBUS line should always end with a socket.

PROFIBUS Connection 4:
Pin assignment socket/plug connector Fieldbus Box modules

Two T-pieces are available: