Siemens SIMATIC NET PROFIBUS manual Redundant LAN Cables

Installing LAN Cables

Figure C-2 Interrupting the Conduit at an Expansion Joint

Bus Terminal RS-485

The installation of electrical LAN cables in a protected area is supported by the use of the RS-485 bus terminal. This allows the attachment of DTEs and service and commissioning work on the DTEs without needing to move the actual LAN cable.

Redundant LAN Cables

The installation of redundant LAN cables involves special requirements. Redundant cables should always be installed on separate cable racks to avoid simultaneous damage by the same event.

Do not kink or crimp the trailing and festoon cables

When installing trailing and festoon cables in moving equipment, make sure that the cables are not kinked or crimped by other cables and equipment when the cables are moved.

Do not operate trailing or festoon cables if they are twisted

To ensure that the working life of trailing and festoon cables, make sure they are not twisted during installation. A line is printed on the outer sheath along the length of the cables to allow the cable to be checked for twists.

PROFIBUS Networks SIMATIC NET	C-5
6GK1970-5CA20-0AA1 Release 2 05/2000