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Functional specifications, Functional overview, About the profibus protocol – ProSoft Technology MVI56-PDPS User Manual

Page 57: E 57), Functional, Overview

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Reference MVI56-PDPS

♦ ControlLogix Platform

Profibus DP Slave Communication Module

ProSoft Technology, Inc.

Page 57 of 88

April 22, 2008

Type Specifications

Physical Connection

PROFIBUS Connector

Standard PROFIBUS DB-9F communication connector. Cable
connection matches PROFIBUS pin out specification.

5.1.5 Functional

Specifications

PROFIBUS Slave
ƒ

Communication

parameters

o

Baud Rate: 9.6 kbps12 Mbps

ƒ

Supported I/O length

o

Up to 122 words Input data

o

Up to 122 words Output data

o

Total not to exceed 200 words

ƒ

Freeze

Mode

ƒ

Sync

Mode

ƒ

Auto Baud Setting

o

Configurable Parameters

o

PROFIBUS Node Address: 0 to 125

o

Data byte swapping

o

Action on loss of PROFIBUS connection

o

Comm Fail Timeout Multiplier

o

Status Data location in Internal Database

ƒ

Status

Data

o

PROFIBUS Status Data for slave

ƒ

Physical

Connection

o

PROFIBUS Connector

o

Standard PROFIBUS DB-9F communication connector. Cable connection
matches PROFIBUS pin out specification

5.2 Functional

Overview

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 PROFIBUS serial communication network.

5.2.1 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 MVI56-PDPS module works as a slave.

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