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
7-2 Communicate Between a PLC-5 Controller and a Remote SLC 5/03 Controller over Multiple DH-485 Networks
Hardware Configuration
In this hardware configuration, a remote PLC-5 controller sends a message to
an SLC 5/03 controller.
Communications Between a PLC-5 and a Remote SLC 5/03 Controller on a DH-485 Network
The PLC-5 controller sends a message to an SLC 5/03 controller located on a
DH-485 network.
• The PLC-5 controller is located on a DH+ network. (1)
• The PLC-5 controller is connected to channel A on a 1756-DHRIO
module located at node 12. (2)
• The 1756-DHRIO is on the same backplane as the 1756-DH485
module and is located in slot 8 of the chassis. (3)
• The 1756-DH485 module is located in slot 14 of the chassis. (4)
• The 1756-DH485 module uses channel A to connect to the SLC/03
controller located at node 1 over the DH-485 network. (5)
DH+/RIO
DH485
EXTERNAL
ControlLogix Controller
1756-DH485
Channel A (2), (3)
SLC 5/03 Controller (5)
DH485 network
communicates
through link
couplers.
PLC-5 controller
sends a message to
an SLC 5/03
controller.
(1)
DH+ Network
44069
AIC+
AIC
Channel A (4)
1756-DHRIO
The 1756-DHRIO and the
1756-DH485 are on the
same backplane.