Siemens PC 670 Networking the Computing Unit and Other Nodes via Profibus, Hardware requirements

Connecting and Switching on the Computing Unit Release 04/02

3.9Networking the Computing Unit and Other Nodes via PROFIBUS

Networking the computing unit via PROFIBUS

PROFIBUS is an open and robust bus system for industrial use. It can be used to configure networks with up to 32 nodes per segment. PROFIBUS-DP supports data rates of 9.6 KBaud to 12 MBaud.

How the network functions

The network operates on the ”token passing with subordinate master/slave” principle (complying with DIN 19245, PROFIBUS). It distinguishes between active and passive nodes. An active node receives the token and passes it on to the next node within a specified time.

Hardware requirements

Using the following components, for example, you can connect or network the computing unit to/with PROFIBUS:

Sinterface RS 485, MPI/DP interface, integrated

Sshielded, twisted pair cable (bus cable or spur line)

Note

Please refer to the SIMATIC NET Catalog IK IP for more information on the SIMATIC Net PC cards.

3-24 Panel PC 670 Computing Unit, Equipment Manual