User Manual
Table Of Contents
- 1756-UM532A-EN-P
- Important User Information
- Table of Contents
- Purpose of This Manual
- Preface
- 1756-DH485 Module Overview
- Overview of the DH-485 Network
- Introduction
- DH-485 Network Description
- DH-485 Network Protocol
- DH-485 Token Rotation
- DH-485 Network Initialization
- Devices that Use the DH-485 Network
- 1747-AIC Isolated Link Coupler for DH-485
- 1761-NET-AIC Advanced Interface Converter Product Overview
- Operating Modes
- Device Compatibility
- Misconception about the 1761-NET-AIC Converter
- 1747-UIC USB to DH-485 Interface Converter
- Example System Configuration
- Important Planning Considerations
- Additional Resources
- Use Data Highway 485 Network
- Use RSLinx Software to Create a Routing Table
- Communicate from an SLC 5/03 Controller to a Logix Controller over a DH-485 Network
- Communicate Between SLC Controllers over DH+ and DH485 Networks
- Communicate Between a PLC-5 Controller and a Remote SLC 5/03 Controller over Multiple DH-485 Networks
- Communicate from an SLC 5/05 Controller to an SLC 5/03 Controller over an EtherNet/IP Network
- Communicate to a SLC 5/03 Controller on a DH-485 Network
- Communicate from a Logix Controller to an SLC 5/03 Controller over EtherNet/IP and DH-485 Networks
- Specifications
- Troubleshoot the 1756-DH485 Module
- Index
- How Are We Doing?
- Rockwell Automation Support
- Backcover
Publication 1756-UM532A-EN-P - May 2006
Table of Conten ts ii
Chapter 3
Use Data Highway 485 Network
Introduction . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-1
What Is Data Highway 485? . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-1
Link Design . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-2
Two Methods of Communication Over a DH-485 Network . . . . . . 3-2
Use DH-485 Messaging . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-3
Local DH-485 Messaging . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-3
Limitations of Local DH-485 Messaging . . . . . . . . . . . . . . . . . . . 3-5
Remote DH-485 Messaging . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-5
Configuration Information in DH-485 Messaging. . . . . . . . . . . . . . 3-11
Application Timeout . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-12
Example DH-485 Network Routing Configuration. . . . . . . . . . . . . 3-13
Use the Common Industrial Protocol (CIP) Messaging. . . . . . . . . . 3-14
Chapter 4
Use RSLinx Software to Create a
Routing Table
Introduction . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4-1
Choose the Correct Software. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4-1
Use RSLinx Software to Create a Routing Table . . . . . . . . . . . . . . . . 4-2
What Is a Routing Table? . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4-2
ControlLogix Routing . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4-2
Create the Routing Table . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4-3
Set the Controller Slot . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4-8
Chapter 5
Communicate from an SLC 5/03
Controller to a Logix Controller
over a DH-485 Network
Introduction . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5-1
Hardware Configuration . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5-2
Use the Controller Slot to Route the Local Message . . . . . . . . . . . . . 5-3
Create a Local Message in RSLogix 500 . . . . . . . . . . . . . . . . . . . . . . . 5-4
Configure the Message. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5-5
Create a Logic Map for the Local Message in
RSLogix 5000 Software . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5-6