PROFIBUS Manual

M12 plug configuration

M12 plug configuration

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M12 plug configuration

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clip0095

Socket

clip0096

Male plug

M12-5 B-coded

 

according to IEC 60947-5-2 or IEC 61076-2-101

 

There must be no possibility of confusing the B-coded M12-5 plug with the A-coded plugs of signal lines.

 

Pin no.

Signal

Function

 

1

VP

+5V supply for bus termination

Mandatory

2

RxD/TxD-N

Data line minus (A conductor)

Mandatory

3

DGND

Data ground

Mandatory

4

RxD/TxD-P

Data line plus (B conductor)

Mandatory

5

--

not used

 

Thread

Shield

Frame ground connection

Advisable

 

The two conductors in the cable transmit the signals: “Data line plus” (B conductor) and “Data line minus” (A conductor). They are coloured red or green and must not be confused.

 

The shield must be applied to a large surface at both cable ends. For connection of the shielding it is advisable to use the plug's screw joint. In current versions of the standards, pin 5 is no longer connected to the shield.