beautypg.com

Siemens SIMATIC NET PROFIBUS User Manual

Page 16

background image

PROFIBUS NETWORKS

1-6

PROFIBUS Networks SIMATIC NET

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

Transmission Media

PROFIBUS networks can be implemented with the following:

S

Shielded, twisted pair cables (characteristic impedance 150

)

S

Shielded, twisted pair cables, intrinsically safe (with PROFIBUS-PA)

S

Fiber-optic cables

S

Wireless (infrared technology)

The various communication networks can be used independently or if required can
also be combined with each other.