Rockwell Automation 2755-SNx Adaptascan Bar Code Readers User Manual
Page 112
7–6
Communicating with an SLC on a DH-485 Network
Publication 2755-6.8
Connecting Readers to SLC 5/04 Controller – 1 AIC Module
The SLC 5/04 controller requires two 1747-PIC converters.
However, you can use an RJ48 Y adapter (8-wire LAN phone jack
plug) to connect the two 1747-PIC modules. The RJ48 Y adapter is
a modular adapter for 4-pair cable which parallels two 4-pair jacks
and one 4-pair modular plug. This adapter eliminates the second
1747-AIC module shown on the previous page.
The end devices on a DH-485 network must be terminated. The
wiring base of the AdaptaScan Reader provides a termination switch.
SLC 5/04 Processor
Term
A
B
Com
Shield
Chassis Gnd
1747-PIC
1747-AIC Module
1747-PIC
AdaptaScan Wiring Base
RS-422/RS-485 Terminal
AdaptaScan Wiring Base
RS-422/RS-485 Terminal
Computer
DH-485
RS-232
RS-232
DH-485
Channel 0
RJ48 Y Adapter
(8-wire LAN Phone Jack Plug)
Available from Anixter Company
Part No: Hubbell BR851-B
Phone: 414-355-0222
Power
Supply