Prosoft-technology 5205-DFNT-PDPS Uživatelský manuál stáhnout pdf (Strana 15)

Functional Overview PDPS ♦ ProLinx Gateway

PROFIBUS DP Slave

ProSoft Technology, Inc. Page 15 of 61

December 31, 2008

2 Functional Overview

In This Chapter

 About the PROFIBUS Protocol..............................................................15

 Port Physical and Protocol Specifications .............................................16

 Module Internal Database .....................................................................17

 Mailbox Commands...............................................................................18

 Mailbox Structure ..................................................................................19

The PROFIBUS slave protocol driver may exist in a single port implementation.

The driver can be configured as a slave interface with other PROFIBUS devices.

The PROFIBUS slave port can be used to continuously interface with other

PROFIBUS devices over a serial communication interface (RS-485).

2.1 About the PROFIBUS Protocol

PROFIBUS (Process Field Bus) is a widely-used, open-standards protocol

created by a consortium of European factory automation suppliers in 1989.

PROFIBUS is a master/slave protocol. The master establishes a connection to

the remote slave. When the connection is established, the master sends the

PROFIBUS commands to the slave. The PDPS module works as a slave only.

The module uses an internal database to pass data and commands between the

processor and the client and server devices on the PROFIBUS network.

PROFIBUS supports a variety of network types. The network type supported by

the PDPS module is PROFIBUS DP (Device Bus), which is designed for remote

I/O systems, motor control centers, and variable speed drives.

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