Specifications

Publication 1747-SG001E-EN-E - February 2013
Select Network Communications 59
DH-485 Network
The DH-485 communication network allows devices on the plant floor to share
information. Via the network, application programs can:
• monitor process and device parameters and status, including fault and alarm
detection.
• perform data acquisition.
• perform supervisory control functions.
• upload/download PLC programs over the network.
The network offers connection to up to 32 nodes, token passing access control, and the
ability to add or remove nodes without disrupting the network. DH-485 supports slave
devices and features multiple-master capability.
The SLC 500 family includes the following DH-485 devices:
• 1747-KE DH-485/RS-232C Interface Module
• 1761-NET-AIC Advanced Interface Converter
• 1747-AIC Isolated Link Coupler
• 1747-UIC USB to DH-485 Converter
DH-485/RS-232C Interface Module
The 1747-KE module is a communication interface that acts as a bridge between
DH-485 networks and RS-232C devices using DF1 protocol. It allows you to access your
SLC 500 processor through an RS-232C link. When used in an SLC 500 chassis with a
modem, the 1747-KE module enables remote programming and troubleshooting of any
single SLC 500 processor, remote communication to a DH-485 network of SLC 500
processors, and remote data collection from the data table of any SLC 500 processor. The
interface module allows you to use the SLC 500 as a remote terminal unit.
PC with USB Port
PC
1747-UIC
Module
1747-AIC
Module
PanelView
Terminal
SLC 5/02 Controller
SLC 5/03 Controller or higher
1747-AIC Module
1747-NET-AIC Module
24V dc
User Power