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Rockwell Automation Publication ENET-RM002C-EN-P - May 2013 77
EtherNet/IP Protocol Chapter 4
Connectivity to IT
While IT and controls engineers are often managed separately and given separate
job performance goals, those goals are beginning to align because the availability
of information is crucially important in both roles. Some companies are
beginning to form hybrid groups and hire individuals with experience in both
areas to form policies, guidelines, and procedures for design and maintenance of a
common network architecture.
Security Policies IT Network Controls Network
Focus Protect intellectual property and company assets 24/7 operations
High overall equipment effectiveness
Priorities 1. Confidentiality
2. Integrity
3. Availability
1. Availability
2. Integrity
3. Confidentiality
Types of data traffic Converged network of data, voice, and video Converged network of data, control, information, safety,
and motion
Access control Strict network authentication and access policies Strict physical access
Simple network device access
Implications of a device failure Continues to operate Can stop operation
Threat protection Shut down access to detected threat Potentially keep operating with a detected threat
Upgrades As soon as possible
During uptime
Scheduled
During downtime
Enterprise Business Systems
Level 4
Data Center
IT Network
Industrial Network
Level 3 - Site Operations
• FactoryTalk® Application Servers
• FactoryTalk Services Platform
• Data Servers
DIO
DIO
DIO
Drive
Controller
HMI
HMI
Drive
Camera
Controller
Controller
Drive
HMI
Stratix 8000
Layer 2 Switch
Filling Cell/Area Zone
Levels 0-2
Ring Topology
Device Level Ring
Processing Cell/Area Zone
Levels 0-2
Ring Topology
Resilient Ethernet Protocol (REP)
Material Handling Cell/Area Zone
Levels 0-2
Bus/Star Topology
- 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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