CPE Profibus Network Architecture & Design 2

Question 1

What is the maximum number of stations (including repeaters) allowed on a single Profibus DP segment?

Accepted Answer

32

Answer

A single Profibus DP segment supports a maximum of 32 stations, including the repeater if used.

Question 2

Which Profibus DP topology supports the longest cable runs at 9.6 kbps?

Accepted Answer

Bus (line) topology

Answer

Profibus DP uses a bus (line) topology as its standard configuration, and at 9.6 kbps allows cable segments up to 1200 meters.

Question 3

In a Profibus DP network, what role does the Class 2 master (DPM2) serve?

Accepted Answer

Provides engineering and diagnostic functions

Answer

The Class 2 master (DPM2) is used for configuration, commissioning, and diagnostic purposes rather than cyclic I/O control.

Question 4

When cascading Profibus DP repeaters, what is the maximum number of repeaters that can be connected in series?

Accepted Answer

9

Answer

Up to 9 repeaters can be cascaded in series on a Profibus DP network, allowing extension of both distance and station count.

Question 5

Which Profibus DP GSD file parameter defines the maximum permissible response time for a slave device?

Accepted Answer

MaxTsdr

Answer

MaxTsdr (Maximum Slave Data Response time) in the GSD file specifies the maximum time a slave may take to respond to a master request.

(CPE) Certified Profibus Engineer Practice Test