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1 Purpose
Define and establish DeviceNet design, installation, and performance testing criteria in accordance with ODVA
physical media specifications. In doing so, this document describes the bidder requirements, the basis of
DeviceNet services, the services to be supplied, test equipment requirements and usage, documentation
requirements, and services warranty.
2 Bidder Requirements
2.1 Technical
2.1.1 Trained Personnel
Service Supplier personnel should have completed the Rockwell Automation DeviceNet Training
Course, CCP163, or equivalent. The training should provide in-depth DeviceNet knowledge
from a company that is a member of ODVA.
2.1.2 Experience
Due to the newer technology involved with DeviceNet and the associated test equipment, Service
Supplier personnel must show prior experience with DeviceNet systems installations. This prior
experience should also include the testing of DeviceNet systems or equivalent network. Service
Supplier personnel must show prior experience with all test equipment or equivalent, the ability to
interpret the test results, and provide recommendations for any test or verification that did not
meet test specification criteria. Because of the variety of tests described in this document,
Service Supplier personnel ensure that each test meets all performance and safety requirements,
including any applicable laws, regulations, codes and standards.
2.2 Commercial
2.2.1 Quotation Submittal Requirements
(Specific requirements by issuing company)
2.2.2 (TBD by End User)
(Specific requirements by issuing company)
3 Basis of DeviceNet Services
3.1 Agency Specification
All tests, verifications, checks, and recommendations shall be in conformance with the ODVA
specifications. ODVA specifications define electrical and mechanical parameters that are the basis for all
tests and test equipment usage defined in Sections 4 & 5.
3.2 Manufacturer’s Specifications and Guidelines
All tests, verifications, checks, and recommendations shall be in conformance with all applicable vendor
specifications and guidelines. Manufacturers’ specifications and guidelines may define additional
electrical and mechanical parameters beyond ODVA specifications, and must be included in the basis for
all tests and test equipment usage defined in Sections 4 & 5.
3.3 National and International Codes and Regulations (if applicable)
National and International codes deemed applicable by (customer name) may define additional electrical
and mechanical parameters beyond ODVA and Manufacturer’s specifications, and must be included in the
basis for all tests and test equipment usage defined in Sections 4 & 5. National and International Codes
may include:
• National Electric Code (NEC)
• Canadian Electric Code (CeCode)
• European Communities (EC) Directive
• UL
• CSA
• JIC
• Local Codes and Regulations
4 Services to be Supplied
4.1 Engineering Design Review
The engineering design review consists of reviewing the network prints and the necessary information
supplied by the end user and calculating and verifying the following based on the supplied information.
All review data shall be supplied in a database format for (customer name) review and approval. Any
design not consistent with the applicable ODVA and Manufacturer’s specifications, and National and
International codes shall be noted and a recommendation for conformance shall be supplied.
4.1.1 Calculations
• Maximum segment length based on media type and communication baud rate
• Maximum cumulative drop line length
• Network power requirements and power supply placement
4.1.2 Verifications
• Multiple power supply configuration if necessary
• Proper power supply cabling
• Proper grounding
4.2 On-site Installation Checks (OEM/Vendor Site)
The on-site installation checks include Pre-activation and Active measurements and verifications with
respect to the latest ODVA DeviceNet Specification. All review data shall be supplied in a database format
for (customer name) review and approval. Any test or verification that is not consistent with the
applicable specifications and codes shall be noted and a recommendation for conformance shall be
supplied. These tests and verifications may be repeated at the end user site, but are needed for proper
network communications during the testing stage.
4.2.1 Installation Verifications
• Walk-through of the network to verify all applicable specifications were followed during
installation
• Proper network grounding
• Resistance to ground
• Multiple power supply configuration
• Proper power supply cabling
4.2.2 Pre-Activation Measurements
• Employ time domain reflectometry techniques to electrically measure trunk lengths.
• Employ time domain reflectometry techniques to identify and locate short or open conductors
within the trunk.
• Measure terminated resistance.
• Electrically verify proper point-to-point connections of trunk line conductors and fabricated drop
lines.
4.2.3 Active Network Measurements
• Power supply output.
• CAN H and CAN L, high and low levels.
• DeviceNet signal analysis.
• Common mode voltage, high, low and average.
• Percentage of bus utilization
• CAN Frame Errors / second
• Total CAN Frame Errors
• Communication Baud Rate
4.3 On-site Installation Checks (Plant Site)
The on-site installation checks include Pre-activation and Active measurements and verifications with
respect to the latest ODVA DeviceNet Specification. All review data shall be supplied in a database
format for (customer name) review and approval. Any test or verification that is not consistent with the
applicable specifications and codes shall be noted and a recommendation for conformance shall be
supplied. These tests and verifications may be completed at the OEM or vendor site, but need to be
repeated due to the final network installation at the end user site compared to the temporary installation
during the testing stage at the OEM or vendor site.
4.3.1 Installation Verifications
• Walk-through of the network to verify all applicable specifications were followed during
installation
• Proper network grounding
• Resistance to ground
• Multiple power supply configuration
• Proper power supply cabling
4.3.2 Pre-Activation Measurements
• Employ time domain reflectometry techniques to electrically measure trunk lengths.
• Employ time domain reflectometry techniques to identify and locate short or open conductors
within the trunk.
• Measure terminated resistance.
• Electrically verify proper point-to-point connections of trunk line conductors and fabricated drop
lines.
4.3.3 Active Networks Measurements
• Power supply output.
• CAN H and CAN L, high and low levels.
• DeviceNet signal analysis.
• Common mode voltage, high, low and average.
• Percentage of bus utilization
• CAN Frame Errors / second
• Total CAN Frame Errors
• Communication Baud Rate
5 Test Equipment Usage and Equipment Specifications
The following is a list of test equipment along with their specifications to be used during testing. NOTE: All test
equipment must have current proof of calibration from the equipment manufacturer or approved service
supplier.
5.1 Oscilloscope
• Bandwidth 200MHz
• Real Time Sample Rate 2.5 Gigasamples per second
• Inputs
2 plus external, Independently floating
• Input Isolation 1000V between inputs, references and ground.
• Timebase Range 5 ns – 2 min / division
• Input Sensitivity 5 mV – 100 V / division
• Trigger Types Free run, single, edge, delay, pulse width & external.
• Glitch Capture 50 ns
• True RMS Multimeter 5000 counts, volts, amps, ohms, continuity, & diode.
• PC & Printer Interface Optically isolated
• Safety Certified 1000V CAT II / 600V CAT III
5.2 DeviceNet Active Network Test Device
5.3 Rockwell Automation 1788-MCHKR MediaChecker Media Test Device (or
equivalent)
5.4 Test Cable for Calibration of the 1788-MCHKR MediaChecker (or
equivalent)
• Detect and edit network node configurations
• Display High, Low & Average Network supply and CAN bus voltages
• Report CAN errors per second and total CAN errors detected
• Log CAN frame errors detected for each node
• Detect % Traffic Load on the network
• Scan & report node object data
• Cable specific programmability
• Multi conductor cable test capability
• Measure trunk length
• Detect and locate opens, shorts and miswires along trunk
During installation, a 100-foot (minimum) sample of the installed cable shall be set aside for calibrating the
MediaChecker to ensure maximum accuracy of length measurements. Calibrating with cables longer than
100ft will improve the accuracy of length measurements. The MediaChecker is calibrated at the factory to
provide length measurements that are accurate enough for most applications, but cables from different
batches or manufacturers can have characteristic variances of up to 20 %, causing deviations in length
measurements. To ensure maximum accuracy of length measurements, calibrate the MediaChecker to a
known length of the cable to be tested.
6 Documentation Requirements
6.1 Report Content
The following summarizes the requirements of the final report content. This will include an executive
summary that summarizes the results and provides recommendations to ensure proper network operation,
or approves the installation with no recommendations. The final report should also include all test results
in a database format that is widely known (MS EXCEL or equivalent) and which the end user has the
ability to access, process, analyze, share, and display the information.
• Executive Summary and detailed test results.
A network identifier specific to each network
Total network node count
Total network power tap count
Network media type
Network baud rate
Network calculated maximum length
Network maximum cumulative drop length
Network trunkline miswires if applicable
Network trunkline measured length
Network terminated measured resistance
Network measured resistance to ground
Network power supply cable diameter and length
Network power supply output measurement
Network common mode voltage measurement
CAN H and CAN L measurements
Ground loop verification
Network Load percentage
Network error count
Network errors/second count
Signal waveform samples with analysis (see detail below)
Documented exceptions to the installation specifications in detail. This should include
exceptions that were fixed and exceptions that are still open issues.
Documented open issues with recommendations and risk analysis.
6.2 Signal Waveform Analysis with Respect to Agency and Mfg Specs
The signal waveform analysis section will include captures of packets using the Scopemeter. These will
then be analyzed for any network installation problems.