Rockwell-automation Ethernet Design Considerations Reference Manual Manual de usuario descargar pdf (Pagina 37)

Rockwell Automation Publication ENET-RM002C-EN-P - May 2013 37

Ethernet Infrastructure Features Chapter 3

The DNS server refers to its table and sends back an IP address for the requested

name. Once the client device receives the IP address for a name, it stores it in its

own table so it does not have to ask for the IP address every time. The device still

sends an ARP request if it needs to decode the IP address into a hardware address.

DNS Server

I have IP address

130.151.3.4

1756 Controller

1734 POINT I/O

PowerFlex Drive

130.151.3.4

DNS Table

Name IP Address

Controller 130.151.3.5

PowerFlex Drive 130.151.3.5

POINT I/O 130.151.3.5

1 2 ... 32 33 34 35 36 37 38 39 40 41 42 ... 105 106

Reference Manual 1
Important User Information 2
Summary of Changes 3
New and Updated 3
Information 3
Table of Contents 5
Chapter 4 6
Chapter 5 6
Predict System Performance 6
Studio 5000 Environment 10
Additional Resources 11
EtherNet/IP Overview 13
Network Protocols 14
Configuration Requirements 15
Gateway Address 17
Subnet Mask 18
EtherNet/IP Modules in a 19
Control System 19
Bridge across Networks 20
Chapter 2 21
Topologies 22
Repeaters 25
Media Converters 26
Routers and Gateways 27
Switches 28
Autonegotiation 29
Full-duplex Mode 30
Chapter 3 31
Transmission Packets 32
Transmission Protocols 35
Domain Name System (DNS) 36
Network Address Translation 38
Supported NAT Topologies 39
Virtual LANs and 42
Segmentation 42
VLAN Trunking 44
Quality of Service (QoS) 45
Resiliency 46
Resiliency Protocols 47
EtherChannel Protocol 49
Flex Links Protocol 50
Device-level Ring (DLR) 52
Forwarding 54
Blocking 54
Internet Group Management 55
Protocol (IGMP) 55
Port Security 56
Security Violations 57
Device Commissioning 58
EtherNet/IP Protocol 59
Terminology 61
TCP Connections 62
CIP Connections 62
CIP Connection Message Types 63
CIP Connection Types 63
EtherNet/IP Network 66
Specifications 66
Packets Rate Capacity 69
Requested Packet 70
Interval (RPI) 70
Messaging 71
Explicit Messages 72
CIP Safety 73
CIP Sync 74
Integrated Motion on an 76
Connectivity to IT 77
System Prediction Goals 80
Step 4 or 6: 81
Does System 81
Performance Calculations 83
Calculate Packets/Second 86
(Fastest) 88
Example: Predict System 90
Performance 90
Explicit Messaging 92
1756-EN2T Module 1 93
MAX (Rack-optimized) 98
MAX (Analog Non-Isolated) 98
MAX (Produced/Consumed Tag) 98
Rockwell Automation Support 106
Documentation Feedback 106

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