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66 Rockwell Automation Publication ENET-RM002C-EN-P - May 2013
Chapter 4 EtherNet/IP Protocol
EtherNet/IP Network
Specifications
Table 12 - EtherNet/IP Network Specifications
Cat. No. Connections CIP Unconnected
Messages
(backplane +
Ethernet)
Ethernet Node
Count, Max
Packet Rate Capacity (packets/second)
(4)
SNMP Support
(password
required)
TCP CIP I/O HMI and MSG
1734-AENT, 1734-AENTR 32 20 32 N/A 5000 900 No
1738-AENT, 1738-AENTR 32 20 32 N/A 5000 900 No
1756-ENBT 64 128
(3)
64 + 64 N/A 5000 900 Yes
1756-EN2F 128 256
(3)
128 + 128 N/A IMPORTANT: Packet rates for
ControlLogix EtherNet/IP
communication modules depend
on series and firmware revision.
See Table 14 on page 68.
2000 Yes
1756-EN2T 128 256
(3)
128 + 128 N/A 2000 Yes
1756-EN2TXT 128 256
(3)
128 + 128 N/A 2000 Yes
1756-EN2TR 128 256
(3)
128 + 128 N/A 2000 Yes
1756-EN2TRXT 128 256
(3)
128 + 128 N/A 2000 Yes
1756-EN2TSC 128 256
(3)
128 + 128 N/A 930 with encryption
1800 without encryption
Yes
1756-EN3TR 128 256
(3)
128 + 128 N/A 2000 Yes
1756-EWEB 64 128
(3)
128 + 128 N/A N/A 900 Yes
1768-ENBT 32
(1)
64
(2)
64
(3)
128
32 + 32 N/A 5000 960 Yes
1769-L23Ex 832
(3)
32 + 32 N/A 2000 380 Yes
1769-L3xE6432
(3)
32 + 32 N/A 4000 760 Yes
1769-L16ER-BB1B 120 256 256 4 6000 @ 500 bytes/packet 400 messages/s @ 20%
comm. timeslice
Yes
1769-L18ER-BB1B 120 256 256 8 6000 @ 500 bytes/packet Yes
1769-L18ERM-BB1B 120 256 256 8 6000 @ 500 bytes/packet Yes
1769-L24ER-QB1B 120 256 256 8 6000 @ 500 bytes/packet Yes
1769-L24ER-QBFC1B 120 256 256 8 6000 @ 500 bytes/packet Yes
1769-L27ERM-QBFC1B 120 256 256 16 6000 @ 500 bytes/packet Yes
1769-L30ER 120 256 256 16 6000 @ 500 bytes/packet Yes
1769-L30ERM 120 256 256 16 6000 @ 500 bytes/packet Yes
1769-L30ER-NSE 120 256 256 16 6000 @ 500 bytes/packet Yes
1769-L33ER 120 256 256 32 6000 @ 500 bytes/packet Yes
1769-L33ERM 120 256 256 32 6000 @ 500 bytes/packet Yes
1769-L36ERM 120 256 256 48 6000 @ 500 bytes/packet Yes
1783-ETAP 64 N/A N/A N/A N/A 900 No
1783-ETAP1F, 1783-ETAP2F 64 N/A N/A N/A N/A 900 No
1794-AENT 64 64 N/A N/A 9500 N/A Yes
2x-COMM-E 30 16 16 N/A 400 50 No
9300-ENA N/A N/A N/A N/A — — N/A
(1) The 1768-ENBT communication module supports 32 TCP connections with firmware revision 1.x.
(2) The 1768-ENBT communication module supports 64 TCP connections with firmware revision 2.x or later.
(3) CIP connections can be used for all explicit or all implicit applications. For example, a 1756-ENBT module has a total of 128 CIP connections that can be used for any combination of connections.
(4) Total packet rate capacity = I/O Produced Tag, max + HMI/MSG, max. Packet rates vary depending on packet size. For more detailed specifications, see the EDS file for a specific catalog number.
- 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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