Siemens S7-400 - Bus Connectors; Bu S Connector

Networking
5-19
S7-400 and M7-400 Programmable Controllers Hardware and Installation
A5E00069481-04
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
(6ES7 972-0BA20-0XA0)
• Bus connector with PG connector
(6ES7 972-0BB20-0XA0)
Appearance (6ES7 972-0B.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 5-11 Bu s connector