Siemens SIMATIC NET PROFIBUS User Manual

4-42

PROFIBUS Networks SIMATIC NET

6GK1970-5CA20-0AA1 Release 2 05/2000

Figure 4-21 shows the bus connector with order number 6ES7 972-0B.40 ...

Screws for
mounting on the
station

9-pin sub-D male
connector for
connection to the
station

Housing screws

PG socket (only with
6ES7
972-0BB40-0XA0)

Figure 4-21

Bus Connector (order number 6ES7 972-0B.40 ...)

Connect up the LAN cable to the bus connector with order number
6ES7 972-0B.40 ... as follows:

1. Strip the LAN cable as shown in Figure 4-22 using the FastConnect stripping

tool (sizes and lengths are shown in the table on the rear of the tool).

6XV1 830-0EH10

A1

B1

7.5

5

16

Figure 4-22

Cable Stripped for Connection to Bus Connector (6ES7 972-0B.40 ...)

2. Open the casing of the bus connector by undoing the screws and removing the

cover.

3. Insert the green and red cores in the screw terminal as shown in Figure 4-22.

Make sure that you always connect the same cores to the same terminal A or B
(for example terminal A is always connected to green and terminal B always to
red).

4. Press the cable sheath between the two clips. This secures the cable.