Industrial Networks & the Impact of Traffic

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Britney Davis
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1 Industrial Networks & the Impact of Traffic PriorityChannel Technology S Wixom Road, PO Box 437 Wixom, MI USA P F

2 Welcome Don Lupo, Director Mktg. & Sales Tom Weingartner, V.P. Marketing PriorityChannel Technology inside every Busworks XT Module

3 Embedded Industrial Communication Industrial Networks and the Impact of Traffic October 4, 2013

4 Technology Provider Innovasic is an Industrial Ethernet connectivity solution provider Acromag has adopted Innovasic's solution including PriorityChannel 2

Ethernet is "taking over" factory communication Replacing serial Fieldbus

5 Industrial Ethernet In the 1980 s Ethernet transformed the enterprise It is now THE network in the enterprise 10/100/1000 TCP/IP Standard Ethernet Today, Ethernet is "taking over" factory communication Replacing serial Fieldbus Becoming THE network in the factory AND the enterprise 10/100 TCP/IP Standard Ethernet + 3

6 What Makes Industrial Ethernet Different? Real Time Message Passing Non-Real Time Real Time Synchronized Real Time Data Services, IT, etc. Factory Automation Motion Control Real Time ~100 ms < 15% jitter ~1 ms < 1% jitter In order to sense and take action in automation, Ethernet messages must arrive "on-time" 4

Industrial Ethernet Realities Office Quality

Commissioning & Diagnostics Ring Protocols such

7 Industrial Ethernet Realities Office Quality Data Area 1 Line 1 Line 2 Different IE Protocols Segment Cell 1 Cell N Cell 1 Cell N Cell 2 Cell 2 Cyclic and Acyclic messages Cell 2 Commissioning & Diagnostics Ring Protocols such as DLR, MRP, HSR Line Star Ring that keep the plant running. 5

8 Industrial Ethernet Realities Many types of Ethernet traffic Different areas, lines, cells can use different IE protocols Influences the amount of Broadcast/Multicast traffic HMI's and other devices may have their own protocol Traffic for the front office may be routed through a cell Typically standard Ethernet, amount of data varies Multiple types of Topologies More than one topology can exist within a cell Affects what traffic devices will see Device traffic varies widely based on position in a line Devices must support redundancy protocols for rings DLR for EtherNet/IP, MRP for PROFINET, etc. 6

9 Industrial Ethernet Realities Commissioning & Diagnostics PCs and other tools change network traffic patterns when connected for commissioning and maintenance Cyclic Data Messages are sent to/from devices at periodic rates Each device can send/receive messages as fast as once every millisecond Acyclic data PLCs send network management messages Amount of traffic varies widely as devices connect, disconnect from the network Alarms can cause traffic to spike 7

10 Network Traffic Components Types of Network Traffic Network Applications HTTP, FTP, SNTP, Network Management & Diagnostics ARP, LLDP, SNMP, # of Messages Industrial Ethernet has Automation Traffic PLUS Network Load Surge Normal Conditions Standard Ethernet Quality Data, HMI Data, Industrial Ethernet Cyclic Data, Acyclic Data Time 8

Device Response to Network Traffic Innovasic

0 2.8 ms (max) ~25% JITTER Each Field Device

11 Device Response to Network Traffic Innovasic tested PROFINET and EtherNet/IP Field Devices found in the market Each Field Device was subjected to Net Load Testing ~18% JITTER ms (max) ~25% JITTER Each Field Device response was plotted for 2 ms cycle time ms (min) 9

12 Network Traffic Test Results 8 Network Load Tests 10

13 What Can Be Done to Solve This? Use Innovasic's PriorityChannel Technology a combination of hardware and software that makes Industrial Ethernet deterministic at the node Real-Time I/O messages are separated from standard Ethernet messages to eliminate the effects of network traffic 11

14 How does PriorityChannel Work? Context Supervisor Processing Non Real-Time Message Processing Real-Time Message Processing Application Processing 2 Software Runs In On-Chip Contexts 1 Unique Chip Architecture fido1100 Communication Controller 32-bit CPU Core RTOS Kernel in a Chip JTAG Debug Port External Bus Interface Peripheral Management Unit SDRAM Controller 10-bit ADC Network Traffic Universal I/O Controller Universal I/O Controller Universal I/O Controller Network Traffic 3 Universal I/O Controller Separate and prioritize network traffic SRAM Timer Counter Unit 12

Testing < 0.5% JITTER < 2% JITTER 2.1 2.

15 PriorityChannel's Performance Advantage Innovasic tested its PROFINET and EtherNet/IP RapID Platform RapID Platform was subjected to Net Load Testing < 0.5% JITTER < 2% JITTER ms ms (max) (max) RapID Platform response was plotted for 2 ms cycle time ms ms (min) (min) 13

16 Innovasic's Network Traffic Test Results PROFINET Jitter < 0.5% EtherNet/IP Jitter < 2% for all Network Load Conditions! 14

17 The Future of Network Traffic Testing Network traffic will increase over time As more Industrial Ethernet is deployed As Industrial Ethernet-based manufacturing systems are improved Traffic can be impacted by security attacks and faulty equipment The impact of traffic will become a significant problem EtherNet/IP and Profinet standards bodies are both evaluating network load tests Already included at PlugFests Expect to see load tests required in conformance tests 15

Summary Industrial Ethernet passes messages in Real Time, Synchronous Real Time, and Non-Real Time Industrial Ethernet Realities Many different protocols on the wire Topology, Commissioning,

18 Summary Industrial Ethernet passes messages in Real Time, Synchronous Real Time, and Non-Real Time Industrial Ethernet Realities Many different protocols on the wire Topology, Commissioning, Diagnostics have an effect on traffic Network segments may be used for more than the manufacturing task at hand (pass quality data, etc.) Many components of Industrial Ethernet traffic, unlike traditional field busses Cause network loading that can effect device performance Innovasic's PriorityChannel is a proven solution to eliminate the effects of network traffic Passes the new ODVA network loading tests Passes PROFINET Net Load Security Class III The impact of traffic is a significant future problem 16

19 Thank you for Attending Tel:

PROFINET IO enabled on Cisco Industrial Ethernet 3000 Switches

. Brochure PROFINET IO enabled on Cisco Industrial Ethernet 3000 Switches PROFINET is one of the multi-bus Ethernet-based standards for the automation industry, allowing integration with IT and Fieldbus