1 Getting Started In This Chapter. . . .

1 Getting Started In This Chapter. . . .
Getting Started
11
In This Chapter. . . .
— Introduction
— Introduction to DeviceNet
— Terminator I/O System
— T1K–DEVNETS DeviceNet Base Controller
1–2
Getting Started
Getting Started
Introduction
The Purpose of
this Manual
This manual describes the installation and
operation of the Terminator I/O DeviceNet
Base Controller (T1K–DEVNETS).
Supplemental
Manuals
The following manuals are essential to the proper use of your Terminator I/O
DeviceNet Adapter.
• Terminator Installation and I/O Manual part number T1K–INST–M
This manual contains very important information, including a complete
I/O Module Memory Map. The Memory Map is crucial in designing and
implementing a Terminator I/O system.
• The PLC/PC software manual
• The DeviceNet software (if separate) manual
• The DeviceNet Scanner (or Master) manual
If you have a working knowledge of the DeviceNet network, the DeviceNet software
and PLC or PC which you are using, this manual will help you configure and install
your T1K–DEVNETS DeviceNet Base Controller.
Who Should Read
this Manual
Installation and
Safety Guidelines
Technical Support
We strive to make our manuals the best in the industry and rely on your feedback in
reaching our goal. If you cannot find the solution to your particular application, or, if
for any reason you need additional technical assistance, please call us at
770–844–4200.
Our technical support team is glad to work with you in answering your questions.
They are available weekdays from 9:00 a.m. to 6:00 p.m. Eastern Time. We also
encourage you to visit our website where you can find technical and nontechnical
information about our products and our company.
www.automationdirect.com
Introduction
1–3
The “light bulb” icon in the left-hand margin indicates a tip or shortcut.
The “note pad” icon in the left–hand margin indicates a special note.
Getting Started
Symbols Used
The “exclamation mark” icon in the left-hand margin indicates a warning or caution.
These are very important because the information may help you prevent serious
personal injury or equipment damage.
Key Topics for
Each Chapter
The beginning of each chapter will list the
key topics that can be found in that
chapter.
1
Installation and
Safety Guidelines
1–4
Getting Started
Installation and
Safety Guidelines
Getting Started
Introduction to DeviceNet
DeviceNet
Concepts
The ODVA
DeviceNet is a low-level network designed to connect factory-floor devices to control
systems. There are a host of manufacturers of DeviceNet products, offering an array
of products including sensors, motor drives and starters, PLCs, pushbuttons,
remote I/O systems, etc.
Here are some DeviceNet concepts you may find helpful.
• DeviceNet supports various communication structures including Peer to
Peer, Multi-master and Master/Slave. The T1K–DEVNETS uses the
predefined Master/Slave connection.
• DeviceNet has two types of messaging: Explicit Messaging and I/O
Messaging.
• Explicit Messaging is low priority, not time-critical and usually
for configuration/diagnostic purposes.
• I/O Messaging is time-critical and high priority
for I/O data transfer. I/O Messaging comes in four types:
•
Strobed
•
Polled (The T1K–DEVNETS only supports Polled.)
•
Change of State (or COS)
•
Cyclic
• A single DeviceNet network is limited to 64 nodes. A node can be a
single-bit device, such as a limit switch, or a remote I/O slave with
several I/O modules, such as the T1K–DEVNETS. The Master
(Scanner) is usually assigned to node address 0, and many Slave
devices have a factory default node address of 63.
• DeviceNet has the following data rates (with maximum bus lengths):
• 125 kbps (bus length = 500m max.)
• 250 kbps (bus length = 250m max.)
• 500 kbps (bus length = 100m max.)
• The 24V DeviceNet power supply must be grounded at only one point.
The V– terminal must be tied to Protective Earth Ground at the power
supply only.
The DeviceNet standard is maintained by the ODVA (Open DeviceNet Vendor
Association, Inc.). Contact the ODVA for detailed information about DeviceNet.
Open DeviceNet Vendor Association, Inc.
20423 State Road 7
Suite 499
Boca Raton, FL 33498
Phone: (954) 340–5412
Fax: (954) 340–5413
Internet: www.odva.org
Email: odva@powerinternet.com
Introduction
1–5
Terminator I/O System
Power Supply
DeviceNet
Base
Controller
Getting Started
Terminator I/O is a modular system which combines the functions of terminal blocks
and I/O modules for distributed I/O. Each Terminator I/O system has the following
components: a Power Supply, a Base Controller, and one or more I/O Module(s).
I/O Modules
I/O Module
Installation and
Safety Guidelines
I/O Base
Mini Glossary
Below is a small glossary of terms used in this manual.
Scanner or Master
The DeviceNet Master of which the
T1K–DEVNETS is a slave. This can be either a
PLC module or a card in your PC.
Controller or Slave
Short for the T1K–DEVNETS Base Controller.
The controller is also referred to as a Network
Interface Module elsewhere.
Node Address or MAC ID
The unique device address on a DeviceNet
network. There are a maximum of 64 total (0–63).
Usually the scanner is node 0.
1–6
Getting Started
Getting Started
T1K–DEVNETS Base Controller
T1K–DEVNETS
Base Controller
Features
The T1K–DEVNETS Base Controller is a slave module that functions as a controller
for Terminator I/O on a DeviceNet network.
The Controller has the following features:
• Status LEDs (Module and Network)
• Serial Port
• Node Address Switches
• Output Enable Switch
• DeviceNet Connector
Clip Arm
Status LEDs
Output
Enable/Disable
Switch
Node Address
Switches
Installation and
Safety Guidelines
Serial Port
DeviceNet
Connector
Locking Tab
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