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Issue
98, September 1998
Networking
with DeviceNet
by
Jim Brady
Start
• Sorting Them Out
• New
Breed •
Motivation •
Can •
Message Reliability •
DeviceNet Connections •
Device Net Messages •
Stringing Messages Together •
Some Real Messages •
Object Library •
Conformance Testing •
DeviceNet Standards •
References,Sources,PDF
DeviceNet
Standards
The
DeviceNet standard keeper is the Open DeviceNet Vendor
Association (ODVA). It manages the evolving standard and
assists vendors in developing their products and the Device
Profiles for them. Within the association are 14 active
special-interest groups, organized along product lines.
The ODVA Web site lists these groups.
You
can get your feet wet by getting a DeviceNet catalog at
no charge from ODVA. The first chapter has an excellent
overview of CAN and DeviceNet. If you decide to jump in,
you can purchase the full DeviceNet specification (the
CD version includes a good search engine) from ODVA. Later
you can become a member, join a SIG, and play a part in
defining network standards for your industry.
Next
month, I’ll turn some DeviceNet objects into C++
classes, embed them in a ’386EX, and hang a DeviceNet
interface on it.
Jim
Brady has designed embedded systems for 15 years. You
may reach him at EbaraJim@aol.com.
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