Bulletin 2755
Single/Dual-Head Enhanced Bar Code Decoders
Product Data
29
Small Logic Controller (SLC)
Figure 4 shows how the decoder connects to an SLC 500 Controller over an
RS-232 link using the SLC BASIC Module (Catalog No. 1746-BAS), or to a
SLC 5/03 Controller using Allen–Bradley’s DH485 multidrop interface.
Host Computers
The decoder connects directly to other host computers using the RS-232 or
RS-422 interface of the host device, or can be multidropped through a
1784-KR module using the DH485 interface.
Figure 4
SLC and Host Computer Configurations
2755–DS/DD
Decoder
Host Computer to Decoder
using RS-232 or RS-422
RS-232
RS-422
DH485 (using 1784-KR)
1746 1/O Rack
SLC 500 Controller with BASIC Module
to Decoder using RS-232
2755–DS/DD
Decoder
SLC 500 Controller
Catalog No. 1746-BAS
SLC BASIC Module
➀
Requires BASIC Driver for communications between
SLC BASIC Module and Bar Code Decoder.
➀
