User Manual

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Table Of Contents

1756-UM532A-EN-P
Important User Information
Table of Contents
Purpose of This Manual
Preface
- Who Should Use This Manual
- Other Resources
1756-DH485 Module Overview
- Introduction
- What the Module Does
- Module Requirements
- Module Features
- Prevent Electrostatic Discharge
- Removal and Insertion Under Power
- Typical Applications
- Remote Messaging
  - Remote Upload and Download
- Routing Limitations
  - DH-485 and CIP Messaging
  - Alphanumeric Indicators
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
  - Node Address Identification
- Misconception about the 1761-NET-AIC Converter
- 1747-UIC USB to DH-485 Interface Converter
- Example System Configuration
  - Configure the SLC 5/03, SLC 5/04, and SLC 5/05 Controller Channel 0 for DH-485
- Important Planning Considerations
  - Hardware Considerations
  - Software Considerations
- Additional Resources
Use Data Highway 485 Network
- Introduction
- What Is Data Highway 485?
  - Link Design
- Two Methods of Communication Over a DH-485 Network
- Use DH-485 Messaging
- Configuration Information in DH-485 Messaging
- Application Timeout
- Example DH-485 Network Routing Configuration
- Use the Common Industrial Protocol (CIP) Messaging
Use RSLinx Software to Create a Routing Table
- Introduction
- Choose the Correct Software
- Use RSLinx Software to Create a Routing Table
  - What Is a Routing Table?
  - ControlLogix Routing
- Create the Routing Table
  - Set the Controller Slot
Communicate from an SLC 5/03 Controller to a Logix Controller over a DH-485 Network
- Introduction
- Hardware Configuration
- Use the Controller Slot to Route the Local Message
- Create a Local Message in RSLogix 500
- Configure the Message
- Create a Logic Map for the Local Message in RSLogix 5000 Software
Communicate Between SLC Controllers over DH+ and DH485 Networks
- Introduction
- SLC 5/04 Controller Sends a Remote Message
- SLC 5/03 Controller Sends a Remote Message
Communicate Between a PLC-5 Controller and a Remote SLC 5/03 Controller over Multiple DH-485 Networks
- Introduction
- Hardware Configuration
- Create the Routing Table
  - Configure the PLC-5 DH+ Channel 1A Link ID
- Create a Message in RSLogix 5
- Configure the Message
Communicate from an SLC 5/05 Controller to an SLC 5/03 Controller over an EtherNet/IP Network
- Introduction
- Hardware Configuration
- Create a Message in RSLogix 500
- Configure the Message
- Review the Multihop Feature in RSLogix 500
Communicate to a SLC 5/03 Controller on a DH-485 Network
- Introduction
- Hardware Configuration
- Create a Message in RSLogix 5000
- Configure the Message
Communicate from a Logix Controller to an SLC 5/03 Controller over EtherNet/IP and DH-485 Networks
- Introduction
- Hardware Configuration
- Create a Remote 1756-ENBT Message in RSLogix 5000
- Configure the Message
Specifications
Troubleshoot the 1756-DH485 Module
- Introduction
- Check Power Supply and Module Status
- Interpret the LED Status Indicators
- Interpret the Alphanumeric Indicators
- Interpret the OK Status Indicator
- Routing Errors in DH-485 Messaging
  - Routing Errors in Local DH-485 Messaging
  - Routing Errors in Remote DH-485 Messaging
Index
- Numerics
- A
- C
- D
- E
- F
- H
- L
- M
- N
- P
- R
- S
- T
- U
  - Installation Assistance
  - New Product Satisfaction Return
How Are We Doing?
Rockwell Automation Support
Backcover

Publication 1756-UM532A-EN-P - May 2006

1-4 1756-DH485 Module Overview

Removal and Insertion

Under Power

You can install or remove the module while chassis power is applied if you

observe the following precautions.

WARNING

When you insert or remove the module while backplane

power is on, an electrical arc can occur. This could cause an

explosion in hazardous location installations.

Be sure that power is removed or the area is nonhazardous

before proceeding. Repeated electrical arcing causes

excessive wear to contacts on both the module and its

mating connector. Worn contacts may create electrical

resistance that can affect module operation.