Rockwell Automation 1771-DB BASIC MODULE - Manual (Page 69)

Chapter
Programming the BASIC Module 4
4 -5
DH-485 Interface
In this configuration, you interface the serial port on the personal computer
with port DH485 on the BASIC module through a 1747-PIC
Interface/Converter. The 1747-PIC Interface/Converter converts the
RS-232 signals from the personal computer RS-232 serial port to RS-485
format. Port DH485 is configured as the program port.
Personal computer
with PBASE software
1747-C10 cable
Interface/Converter RS-232 to RS-485 (1747-PIC)
PLC processor
with BASIC module
Refer to Chapter 2 for additional information on port configuration.
Important: This chapter focuses on using an ASCII terminal to program
the BASIC module. Refer to the BASIC Development Software
Programming Manual (publication number 1746-6.2) for information on
programming the BASIC module with PBASE.
Chapter