1. DeviceNet Communication Solution for Discrete Devices
Day 2 Training - Technical
Sept. 18, 2008
DeviceNet Communication Solution for Discrete Devices
Process Networking (D)

2. DeviceNet Benefits Installation Cost Savings: Over 30%
Day 2 Training - Sales
Sept. 18, 2008
DeviceNet Benefits
Installation Cost Savings: Over 30%
Dramatic I/O and Wiring Space Reduction
Field Devices Easily Added or Removed
Flexible Structure for Easy Installation & Operation
Powerful Promotion by Allen Bradley and ODVA
Process Networking (D)

3. DeviceNet Protocol Trunk line with drops configuration
Day 2 Training - Sales
Sept. 18, 2008
DeviceNet Protocol
zero drops
drop lines
Trunk line with drops configuration
Up to 64 addressable nodes (62 field devices)
Signal and 24Vdc Power in same cable
Selectable Data Rates (125k, 250k, 500k)
120 ohm terminator at each end of the trunk
Process Networking (D) 4

4. DeviceNet Protocol - Power and Signal
Day 2 Training - Sales
Sept. 18, 2008
DeviceNet Protocol - Power and Signal
Two twisted pair
Signal pair: low loss, high velocity with foil shield
Power pair: up to 8A capacity with foil shield
Overall braid with drain wire
Sensors and low power outputs can be powered directly from bus
Opto-isolation for self powered devices
e.g. drive, PLC, weigh scale, etc.
Multiple power supplies can be used
used for additional power or as back-up
Process Networking (D) 6

5. DeviceNet Protocol - Physical Layer
Day 2 Training - Sales
Sept. 18, 2008
DeviceNet Protocol - Physical Layer
Network Topology
Trunk line (thick, thin or flat cable may be used)
120 ohm terminator at each end
Drop lines may extend to a maximum length of 6 meters
Multiple power supplies may be used for load distribution and backup
Process Networking (D)

6. DeviceNet Protocol - Cable Length
Day 2 Training - Sales
Sept. 18, 2008
DeviceNet Protocol - Cable Length
Trunk Cable Length
Baud Rate
125K
250K
500K
Thick
500m
250m
100m
Flat
400m
200m
75m
Thin
100m
100m
100m
Drop Cable Length
Baud Rate
125K
250K
500K
Maximum 6m 6m 6m
Cumulative
156m
78m
39m
Process Networking (D)

7. Master/DeviceNet Scanners
Day 2 Training - Sales
Sept. 18, 2008
Master/DeviceNet Scanners
Allen Bradley PLCs
Emerson DeltaV
GE Fanuc
Modicon
Others as DeviceNet gains popularity
Process Networking (D)

8. DeviceNet Power Supplies
Day 2 Training - Sales
Sept. 18, 2008
DeviceNet Power Supplies
24VDC Power for DeviceNet Networks
120VAC Input
3.8 and 8.0 Amp versions available
Approved Class 1 Division 2
Process Networking (D)

9. StoneL DeviceNet Cable
Day 2 Training - Sales
Sept. 18, 2008
StoneL DeviceNet Cable
Thick Wire (Trunk Cable)
Thin Wire (Drop Cable)
Flat Cable
Process Networking (D)

10. DeviceNet Drop Connectors
Day 2 Training - Sales
Sept. 18, 2008
DeviceNet Drop Connectors
Direct mount Passive Drop Connectors
- Easy Wiring
- Direct mount type for JM or in customer’s enclosure
Multi Drop Passive Drop Connectors
- Din Rail mount for FieldRack or in customer’s enclosure
Junction Module (JM)
- Rated for Hazardous locations
- Houses Tees or I/O Modules
FieldBlock (FB) (FN)
Process Networking (D)

11. StoneL DeviceNet Components
Day 2 Training - Sales
Sept. 18, 2008
StoneL DeviceNet Components
Valve Communication Terminal (VCT)
2DI/2DO/1AI
- 2 Integral Proximity Sensors (DI) with LED Indication)
- 2 Solenoid Outputs (4 Watts Total Power)
- 1 Analog Input (4-20ma)
Predefined Output fail state
Process Networking (D)

12. DeviceNet Components I/O Modules
Day 2 Training - Sales
Sept. 18, 2008
DeviceNet Components
I/O Modules
2DI / 2DO / 1AI Module with solenoid outputs (4Watts total)
Available in JM or FieldBlock Enclosures
Available in JM with Integral Solenoid Valve
Process Networking (D)

13. Network Layout and Design
Determine # of devices per segment
Determine cable length and cable routing
Determine Drop connector method
Select 24VDC power supply, Size network based upon current load
Popular Design tool includes Rockwell’s RS Networx

14. DeviceNet Device Configuration
Day 2 Training - Sales
Sept. 18, 2008
DeviceNet Device Configuration
Electronic Data Sheet (EDS) file from vendor or Web
standardized ASCII file format
provides description of device attributes
name, ranges, eng. units, data type, etc.
public attributes from device profiles
vendor specific attributes
Set Device Baud Rate and MAC ID
Process Networking (D) 26

15. StoneL DeviceNet Commissioning Kit
Commission Devices (Set Address, Baud Rate)
Test DeviceNet Devices (Read Inputs, Force Outputs)
A Must for Bench Testing DeviceNet VCT’s

16. DeviceNet Gateway Configuration
Day 2 Training - Sales
Sept. 18, 2008
DeviceNet Gateway Configuration
Get EDS file from Vendor
Set MAC ID
Determine Gateway mapping for I/O
Process Networking (D)

17. DeviceNet Applications
Gateway AS-Interface Networks into Many Legacy Systems Where Distance to PLC or CPU over 100 to 200 feet
Use DeviceNet I/O or VCT where Devices Scattered Over Long Distances (Hundreds of Feet Between Units)
Use DeviceNet I/O Retrieving Other Process Variables (Discrete & Analog)
When the Customer Wants it Directly in the Field Device!

18. Application Questions
What is needed to construct a complete DeviceNet Network?
Can you use a conventional 24VDC power supply to supply the DeviceNet segment?
How many field devices can be put on a single DeviceNet Segment?
What type of pneumatic valve can be used with bus powered DeviceNet Dual Modules?

19. DeviceNet Communication Solution for Discrete Devices
Day 2 Training - Technical
Sept. 18, 2008
DeviceNet Communication Solution for Discrete Devices
Process Networking (D)