Connecting readers to slc 5/03 controller – Rockwell Automation 2755-SNx Adaptascan Bar Code Readers User Manual
Page 110
7–4
Communicating with an SLC on a DH-485 Network
Publication 2755-6.8
Connecting Readers to SLC 5/03 Controller
You must use a link coupler if the distance between the reader and
the SLC is greater than 15.2 meters (50 feet). The reader can
connect directly to another RS-485/RS-422 device. Point-to-point
and network connections are the same.
The end devices on the DH-485 network must be terminated. The
wiring base of the AdaptaScan Reader provides a termination switch.
Termination Switch
Ground
Shield
RS-485/422
RS-485/422
RS-422
RS-422
Term
A
B
Com
Shield
Chassis Gnd
SLC 5/03 Processor
Computer
1747-PIC
1747-AIC Module
2755-ASN AdaptaScan Software
SLC 500 Advanced Programming Software
AdaptaScan Wiring Base
RS-422/RS-485 Terminal
AdaptaScan Wiring Base
RS-422/RS-485 Terminal
Power
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