Profinet Io - General Info; Profinet Io Protocol; Connections And Wiring; Acd (Address Conflict Detection) In Ethernet Networks - Danfoss VACON 100 industrial Installation Manual

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Operating manual (148 pages)

Table Of Contents

Table of Contents

vacon • 6

PROFINET IO -

PROFINET IO defines the communication with decentrally connected peripheral devices.

It defines the entire data exchange between IO-controllers (devices with "master functionality") and

the IO-devices (devices with "slave functionality"), as well as parameter setting and diagnosis.

PROFINET IO is designed for the fast data exchange between Ethernet-based field devices and

follows the provider-consumer model.

2.1

PROFINET IO protocol

Connections and

communications

Abbreviation

STW1

ZSW1

PDO

PDI

PNU

NSOLL

NIST

2.2

Connections and wiring

The VACON

100 supports 10/100Mb speeds in both Full- and Half-duplex modes. However, real-

time process control requires the Full-duplex mode and the 100-megabit speed. Drives must be

connected to the Ethernet network with a Shielded Twisted Pair (STP) CAT-5e cable (or better). Use

only industrial standard components in the network and avoid complex structures to minimize the

length of response time and the amount of incorrect dispatches.

2.3

ACD (Address Conflict Detection) in Ethernet networks.

The VACON

100 implements ACD algorithm (IETF RFC 5227).

The ACD algorithm tries to actively detect if the IP address configured to this device is been used by

another device in the same network. To accomplish this, ACD sends four ARP request packets when

the device's Ethernet interface goes up or when its IP address changes. ACD prevents the use of the

Ethernet interface until the ARP probing finishes. This delays the startup of fieldbus protocols about

one second.

GENERAL INFO

Table 2.

Interface

Data transfer method Ethernet half/full -duplex

Data transfer speed

Protocol

Connector

Cable type

Default IP

Table 3. Abbreviations and their explanations

Steuerwort 1 (German for control word 1)

Zustandwort 1 (German for status word 1)

Process data out

Process data in

Parameter number

Sollwert (German for reference value)

Istwert (German for actual value)

Local contacts: http://drives.danfoss.com/danfoss-drives/local-contacts/

100BaseTX, IEEE 802.3 compatible

10/100 MBit/s, autosensing

PROFINET IO

Shielded RJ45 connector

CAT5e STP

Selectable: Fixed or DHCP

Explanation