Rockwell Automation 1770 DH,DHII,DH485 CABLE - Manual (Page 100)

Chapter
7
7-1
Data HighwayĆ485 Overview
This chapter explains the following:
the DH-485 cable system
how nodes communicate on DH-485
Cables are the physical means of transmitting data between nodes. On a
DH-485 network, a node is a hardware interface.
The DH-485 network passes information between devices on the plant floor.
The network monitors process parameters, device parameters, device status,
process status, and application programs to support data acquisition, data
monitoring, program upload/download, and supervisory control.
1747-C11 Cable
1747-C11 Cable
1747-C11 Cable
Link
Coupler
1747-AIC
Link
Coupler
1747-AIC
Link
Coupler
1747-AIC
Communication
Cable
Belden #9842
Personal Computer
with 1784-KR Installed
SLC 500
Controller
SLC 500
Controller
SLC 500
Controller
17680
Chapter Overview
The DHĆ485 Cable System