Rockwell Automation 1771-DB BASIC MODULE - Manual (Page 339)

Product Overview
Appendix A
A –7
Your BASIC module may communicate with a DH-485 network. It can
also communicate with a remote device through a modem using the DF1
protocol. When using DF1 protocol on PRT2, port DH485 is disabled.
Refer to Chapter 2 for additional information on port configuration.
DH-485 Network Configuration
1747-PIC Interface/Converter/1747-AIC Link Coupler Configuration
The BASIC module interfaces with a DH-485 network through a
1747-AIC Isolated Link Coupler.
The 1747-PIC Interface/Converter converts the RS-232 signals from the
personal computer RS-232 serial port to RS-485 format. The 1747-AIC
link coupler links the converted signals with the DH-485 network and port
DH485 on the BASIC module. The 1747-AIC link coupler also provides
an interface to the DH-485 network for a personal computer with the
BASIC development software. Port DH485 must be configured as the
program port in order to communicate with PBASE software via the
DH-485 network.
PLC
processor
with
BASIC
module
1747-C11 cable
1747-C11 cable
Link
coupler
1747-AIC
Link
coupler
1747-AIC
Personal computer
with PBASE software
DH-485
communication
cable
Belden #9842
Interface/Converter
RS-232 to RS-485
(1747-PIC)
SLC 500
controller
with
BASIC
module
Important: Each BASIC module requires a link coupler port to interface it
with the DH-485 network.
Important: When using PBASE to interface with the BASIC module, you
must configure the software for DH-485 communication through the
configuration and terminal selection menus.
Network Configurations
Chapter