Rockwell Automation 1746-BAS-T SLC 500 Basic Basic-T Modules - Manual (Page 15)

Publication 1746-UM004B-EN-P - December 2005
Module and Development Software Overview 1-3
Software Features
The module provides the following software features.
• BASIC programming with the Intel BASIC-52 language and
enhancements
• SLC 500 backplane data read and write support including image
table transfers and M0 and M1 file transfers
• Execution of programs from memory modules
• String manipulation support
• DH485 network support
• DF1 protocol support
• Full set of trigonometric function instructions
• Floating point calculations and conversion
• Extensive call libraries
Module Communication Ports
There are three communication ports on the front of the module. The
location, name, and pin numbers of these ports are listed on the
inside of the module door. They are:
• PRT1 - Used to interface the module with user devices. This port
is a serial port that accommodates RS-232/423, RS-422, and
RS-485 communication modes. Port PRT1 is capable of operating
full-duplex at 300, 600, 1200, 2400, 4800, 9600, and 19200 Kbps.
The default settings are 1200 Kbps, RS-232/423 communications.
• PRT2 - Used to interface the module with user devices or a
modem using DF1 protocol. This port is a serial port that
accommodates RS-232/423, RS-422, and RS-485 communication
modes. Port PRT2 is capable of operating full-duplex at 300, 600,
1200, 2400, 4800, 9600, and 19200 Kbps.
• DH485 - Used to interface the module with the DH485 network.
This port is not isolated and cannot directly drive the DH485
network. You must use a 1747-AIC link coupler to link port
DH485 with the DH485 network.
IMPORTANT
When DF1 protocol is selected on port PRT2, DH485
communications are disabled.