Networking
5-19
AutomationSystem S7-400 Hardwareand Installation
A5E00850741-01
5.6 Bus Connectors

Purpose of the Bus Connector

The bus connector is used to connect the PROFIBUS-DP bus cable to the MPI or
PROFIBUS-DP interface. In this way,you establish the connection to other nodes.
There are two different bus connectors:
Bus connector without PG connector
6ES7972-0BA12-0XA06
6ES7972-0BA41-0XA0
6ES7972-0BA50-0XA0
6ES7972-0BA60-0XA0
6ES7972-0BA30-0XA0
Bus connector with PG connector
6ES7972-0BB12-0XA0
6ES7972-0BB41-0XA0
6ES7972-0BB50-0XA0
6ES7972-0BB60-0XA0

Appearance (6ES7972-0B.20 ...)

Screws for
mounting on
station
PG connector (only with
6ES7 972-0BB20-0XA0)
9-pin sub. D male connector
for connection to MPI or
PROFIBUS-DP interface
Housing screw
Switch for
terminating
resistor
Clamp hinge for vertical
or 30°cable routing
Figure 5-11Bus connector