CPE CPE Device Management & GSD Files 1

Question 1

What is the primary purpose of a GSD (General Station Description) file in a PROFIBUS network?

Accepted Answer

To describe a slave device's capabilities and configuration parameters to a master

Answer

A GSD file provides the master with all necessary information about a slave device, including supported baud rates, I/O data structure, and configurable parameters.

Question 2

Which file extension is used for PROFIBUS GSD files written in a language-specific format?

Accepted Answer

.gsde

Answer

Language-specific GSD files use the .gsde extension (for English) or similar locale extensions, while the base format uses .gsd.

Question 3

In PROFIBUS DP, what is the maximum number of configurable slave modules defined in a single GSD file's module section?

Accepted Answer

64

Answer

The GSD format supports up to 64 module entries, allowing modular slaves to describe all their available I/O slot configurations.

Question 4

Which parameter in a GSD file defines the minimum station delay time a slave requires before responding to a master request?

Accepted Answer

Min_Slave_Intervall

Answer

The Min_Slave_Intervall parameter specifies the minimum time in 100 µs units between two cycles that a slave needs to process requests.

Question 5

What does the 'Freeze_Mode_supp' keyword in a GSD file indicate?

Accepted Answer

The slave supports input freeze commands issued via a broadcast from the master

Answer

Freeze_Mode_supp set to 1 means the slave supports the FREEZE command, causing it to latch its input data snapshot until the master issues an UNFREEZE.

(CPE) Certified Profibus Engineer Practice Test

(CPE) Certified Profibus Engineer Practice Test

CPE CPE Device Management & GSD Files 1