Siemens SIMATIC NET PROFIBUS User Manual
Active Components for RS-485 Networks
5-14
PROFIBUS Networks SIMATIC NET
6GK1970-5CA20-0AA1 Release 2 05/2000
5.6
Connecting the LAN Cable
All the LAN cables described in Chapter 4 are suitable for attachment to the
RS-485 repeater.
RS-485 repeater.
Connecting the PROFIBUS Cable
Connect the PROFIBUS LAN cable to the RS-485 repeater, as follows:
1. Cut the PROFIBUS cable to the required length.
2. Strip the insulation from the PROFIBUS cable as shown in Figure 5-9.
The braid shield must be folded back on to the cable. Only then can the shield
clamp serve as strain relief and as the shield contact.
clamp serve as strain relief and as the shield contact.
ÎÎÎ
ÎÎÎ
8,5
16
10
ÎÎÎ
ÎÎÎ
8,5
16
10
16
Braid shield must be folded back!
e.g. standard cable
6XV1 830-0EH10
e.g. underground cable
6XV1 830-3FH10
Figure 5-9
Stripping the Cable to Connect it to the RS-485 Repeater
3. Connect the PROFIBUS cable to the RS-485 repeater:
Connect the same wires (green/red for the PROFIBUS LAN cable) to the same
terminal A or B (in other words always connect terminal A with a green wire and
terminal B with a red wire or vice versa).
terminal A or B (in other words always connect terminal A with a green wire and
terminal B with a red wire or vice versa).
4. Tighten the shield clamps so that the shield makes good contact with the clamp.