Rockwell-automation Ethernet Design Considerations Reference Manual Manual de usuario Pagina 9
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Rockwell Automation Publication ENET-RM002C-EN-P - May 2013 9
Preface
Rockwell Automation uses open network technology for seamless, plant-wide
integration. These open networks share a universal set of communication
services. As a result, information can be communicated seamlessly throughout
the plant and to and from the Internet for e-business applications.
Each Rockwell Automation network is ideal for a wide range of applications,
operates with devices manufactured by various vendors, and shares data with
industry-standard information networks.
Comparison EtherNet/IP Network ControlNet Network DeviceNet Network
Function Plant management system tie-in (material
handling) with configuration, data collection,
and control on a single high-speed network
Supports transmission of time critical data
between PLC processors and I/O devices
Connects low-level devices directly to
plant-floor controllers without the use of I/O
modules
Typical devices networked • Mainframe computers
• Programmable controllers
• Robots
• HMI
• I/O
• Drives
• Process instruments
• Programmable controllers
• I/O chassis
• HMIs
• Personal computers
• Drives
• Robots
• Sensors
• Motor starters
• Drives
• Personal computers
• Push buttons
• Low-end HMIs
• Bar code readers
• PLC processors
• Valve manifolds
Data repetition Large packets, data sent regularly Medium-size packets; data transmissions are
deterministic and repeatable
Small packets; data sent as needed
Number of nodes, max No limit 99 nodes 64 total nodes
Data transfer rate 10 Mbps, 100 Mbps, or 1 Gbps 5 Mbps 500, 250, or 125 Kbps
Typical use Plant-wide architecture
High-speed applications
Redundant applications
Scheduled communication
Supply power and connectivity to low-level
devices
- 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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