Rockwell Automation 2755 Enhanced Decoder Series B User Manual
Page 34
3–4
Overview of Decoder Operations
Publication 2755-833
Figure 3.1 PLC Controller Configurations
Catalog No
1771-DB
BASIC I/O
Module➀
PLC
Processor
Catalog No.
1771-DA
ASCII I/O Module
1
7
7
1
D
A
PLC with ASCII or BASIC Module to
Decoder using RS-232
1
7
7
1
D
B
2755–DS/DD
Decoder
2755–DS/DD
Decoder
Requires BASIC Driver for communications betwee
1771-DB BASIC Module and Bar Code Decoder.
Multi-drop Link using Flexible Interface Module
and DH485 Data Link
....
.
PLC
Processor
Flexible Interface Module with
2760-SFC2 Protocol Cartridge
1771-1/OI/O
Rack
....
.
PLC
Processor
Flexible Interface
Module with
2760-SFC1 or -SFC2
Protocol Cartridge
Point-to-Point Link using Flexible Interface Module
RS-232, RS-422, or DH485 (point-to-point)
1771-1/OI/O
Rack
1
2
31
1
2
31
31
2
1
2755–DD1A/4A
Decoder
2755–DD1A/4A
Decoder
2755–DD1A/4A
Decoder
2755–DD1A/4A
Decoder
2755–DD1A/4A
Decoder
2755–DD1A/4A
Decoder
2755–DD1A/4A
Decoder
2755–DD1A/4A
Decoder
2755–DD1A/4A
Decoder
2755–DD1A/4A
Decoder
2755–DD1A/4A
Decoder
2755–DD1A/4A
Decoder
2755-CY1 with
NEMA Type 4 device or
2760-A485 connectors with
NEMA Type 1 device
PLC
Processor
1771-1/OI/O
Rack
2755–DD1A/4A
Decoder
Point-to-Point Link using PLC-5 family processor
with serial ASCII port.
➀
1746 1/OI/O
Rack
SLC 5/03 Controller Multidrop
Using DH485 Datalink
SLC 5/03
Controller
2755–DD1A/4A
Decoder
31
2
31
2755–DD1A/4A
Decoder
2755–DD1A/4A
Decoder
1747-AIC Link
Coupler
ModuleModule
1747-C11 Cable