Allen-Bradley SLC 500 BASIC User manual

SLC500™BASICand
BASIC-T Modules
(Catalog Numbers 1746-BAS and
1746-BAS-T)
User Manual
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Important User
Information
Because of the variety of uses for the products described in this publication, those
responsible for the application and use of this control equipment must satisfy
themselves that all necessary steps have been taken to assure that each application
and use meets all performance and safety requirements, including any applicable
laws, regulations, codes and standards.
The illustrations, charts, sample programs and layout examples shown in this
guide are intended solely for purposes of example. Since there are many variables
and requirements associated with any particular installation, Rockwell
International Corporation does not assume responsibility or liability (to include
intellectual property liability) for actual use based upon the examples shown in
this publication.
Rockwell Automation publication SGI-1.1, Safety Guidelines for the Application,
Installation and Maintenance of Solid-State Control (available from your local
Rockwell Automation office), describes some important differences between
solid-state equipment and electromechanical devices that should be taken into
consideration when applying products such as those described in this publication.
Reproduction of the contents of this copyrighted publication, in whole or part,
without written permission of Rockwell Automation, is prohibited.
Throughout this manual we use notes to make you aware of safety considerations:
Attention statements help you to:
•identify a hazard
•avoid a hazard
•recognize the consequences
PLC-5 is a registered trademark; and MicroLogix, SLC 500, RSLogix, and RSLinx are trademarks of Rockwell Automation.
Modbus is a trademark of Schneider Automation Incorporated.
DeviceNet is a trademark of Open DeviceNet Vendor Association (ODVA).
ATTENTION

Identifies information about practices or circumstances that
can lead to personal injury or death, property damage or
economic loss
IMPORTANT Identifies information that is critical for successful
application and understanding of the product.

iPublication1746-UM004A-US-P
Summary of Changes
The information below summarizes the changes to this manual since the last
printing.
To help you find new information and updated information in this release of the
manual, we have included change bars as shown to the right of this paragraph.
New Information
References to the 1746-BAS-T module were added throughout the manual.
Specific information regarding 1746-BAS-T optional memory modules and
module installation is shown in the table below.
For this new information See page(s)
1746-BAS-T Overview 1-1
Optional Memory Modules 2-2
Jumper Settings for Optional Memory Modules 3-3 and 3-4
1746-BAS-T Module ID Code 4-3
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iPublication 1746-UM004A-US-P
Table of Contents
Preface
Who Should Use This Manual . . . . . . . . . . . . . . . . . . . . . . . . . . . . . P-1
Purpose of this Manual . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . P-1
How to Use this Manual . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . P-2
Terms and Abbreviations. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . P-3
Conventions Used in this Manual . . . . . . . . . . . . . . . . . . . . . . . . . . . P-3
Rockwell Automation Support . . . . . . . . . . . . . . . . . . . . . . . . . . . . . P-4
Local Product Support . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . P-4
Technical Product Assistance. . . . . . . . . . . . . . . . . . . . . . . . . . . . P-4
Your Questions or Comments on this Manual . . . . . . . . . . . . . . P-4
Chapter 1
Module and Development
Software Overview
Overview. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-1
BASIC and BASIC-T Modules . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-1
Hardware Features . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-2
Software Features . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-3
Module Communication Ports . . . . . . . . . . . . . . . . . . . . . . . . . . 1-3
Module LEDs . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-4
BASIC Development Software (1747-PBASE) . . . . . . . . . . . . . . . . . 1-5
Typical Configurations . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-6
Module Integration . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-6
Module Programming Interface . . . . . . . . . . . . . . . . . . . . . . . . . 1-7
Module Network Configurations . . . . . . . . . . . . . . . . . . . . . . . . 1-9
Chapter 2
Component Selection
Memory Requirements for BASIC Programming . . . . . . . . . . . . . . . 2-1
Optional Memory Module . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-2
Components Required for DH485 Communication. . . . . . . . . . . . . 2-3
Alternate Connection . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-4
1747-AIC Isolated Link Coupler. . . . . . . . . . . . . . . . . . . . . . . . . 2-5
1747-PIC Interface/Converter. . . . . . . . . . . . . . . . . . . . . . . . . . . 2-5
1784-KR DH485 Interface Card . . . . . . . . . . . . . . . . . . . . . . . . 2-6
DH485 Cable Requirements. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-6
Components Required for DF1 Communication . . . . . . . . . . . . . . . 2-6
Chapter 3
Installing and Wiring Your
Module
Setting Module Jumpers . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-1
Setting Jumper JW1 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-2
Setting Jumper JW2 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-2
Setting Jumper JW3 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-3
Setting Jumper JW4 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-4
Installing Your module . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-6
Wiring Your Communication Ports . . . . . . . . . . . . . . . . . . . . . . . . . 3-7
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Wiring to Ports PRT1 and PRT2 . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-7
Hardware Handshaking . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-8
DTE and DCE Overview . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-9
DTE - Data Terminal Equipment . . . . . . . . . . . . . . . . . . . . . . . 3-9
DCE - Data Communication Equipment. . . . . . . . . . . . . . . . . 3-10
Wiring to Port DH485. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-12
Chapter 4
Programming Overview
Understanding Module Memory Organization. . . . . . . . . . . . . . . . . 4-1
Allocating SLC memory for the Module . . . . . . . . . . . . . . . . . . . . . . 4-2
Module ID Codes. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4-3
BASIC Programming Instructions . . . . . . . . . . . . . . . . . . . . . . . . . . 4-3
BASIC Commands . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4-4
BASIC Statements . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4-5
BASIC Operators . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4-6
Creating and Editing a BASIC Program . . . . . . . . . . . . . . . . . . . . . . 4-7
Entering a BASIC Program Using an ASCII Terminal . . . . . . . . 4-7
Running a BASIC Program. . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4-9
Stopping a BASIC Program . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4-9
Editing a BASIC Program Line Through an ASCII Terminal. . 4-10
Deleting a BASIC Program Line. . . . . . . . . . . . . . . . . . . . . . . . 4-11
Renumbering a BASIC Program. . . . . . . . . . . . . . . . . . . . . . . . 4-12
Transferring Data . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4-13
Transferring Data Between the SLC Processor and Port PRT2 . 4-13
Transferring Data Between the SLC Processor and Port PRT1 . 4-15
Transferring Data Between the SLC Processor and Port DH485 4-16
Transferring Data Between the SLC Processor and the Module 4-17
Status Information for the SLC Processor . . . . . . . . . . . . . . . . . 4-17
SLC Fault Codes. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4-19
Appendix A
Specifications
Module Hardware Specifications . . . . . . . . . . . . . . . . . . . . . . . . . . . A-1
1747-PBASE BASIC Development Software Specifications . . . . . . . A-2
Related Products. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . A-3
Appendix B
Module Configuration . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . B-1
Port PRT1 Configuration (Jumper JW1) . . . . . . . . . . . . . . . . . . . . . B-1
Port PRT2 Configuration (Jumper JW2) . . . . . . . . . . . . . . . . . . . . . B-2
Optional Memory Module Selection (Jumper JW3) . . . . . . . . . . . . . B-3
Program Port and Protocol Selection (Jumper JW4). . . . . . . . . . . . . B-4

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Appendix C
Lithium Battery Replacement,
Handling, and Disposal
Battery Replacement . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . C-1
Battery Handling. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . C-3
Storage . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . C-3
Transportation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . C-3
Battery Disposal . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . C-4
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Table of Contents iv

P-1 Publication1746-UM004A-US-P
Preface
Read this preface to familiarize yourself with the rest of the manual. This preface
covers the following topics:
•who should use this manual
•the purpose of this manual
•how to use this manual
•terms and abbreviations
•conventions used in this manual
•Rockwell Automation support
Who Should Use This
Manual
Use this manual if you are responsible for designing, installing, programming, or
troubleshooting control systems that use Allen-Bradley small logic controllers.
You should have a basic understanding of SLC 500™ products. You should
understand programmable controllers and be able to interpret the ladder logic
instructions required to control your application. If you do not, contact your local
Rockwell Automation representative for information on available training courses
before using this product.
Purpose of this Manual
This manual is a reference guide for the design and installation of the SLC 500
BASIC and BASIC-T modules. It describes the procedures for installing and using
the modules.
Chapter Title Contents
Preface Describes the purpose, background, and scope of this
manual. Also lists related publications.
1 Module and
Development
Software Overview
Explains the hardware and software features.
2 Component Selection Explains and illustrates how to select memory modules,
network configurations, and modems for your
application.
3 Installing and Wiring
your Module Provides installation procedures and wiring guidelines.
4 Programming
Overview Provides information needed to program your module.
Appendix A Specifications Presents the modules’ specifications.
Appendix B Worksheets Describes how to set the module for proper functioning.
Appendix C Lithium Battery
Replacement,
Handling, and
Disposal
Provides important information for the replacement,
handling, and disposal of lithium batteries.
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Related Documentation
The following documents contain additional information regarding Rockwell
Automation products. To obtain a copy, contact your local Rockwell Automation
office or distributor.
How to Use this Manual
To use this manual effectively, use the worksheets provided in appendix B. The
worksheets can help you document your application and settings and also facilitate
the flow of information to other individuals in your organization for
implementation.
For Read this document Publication Number
A BASIC Language reference
manual that describes BASIC
commands, CALLS, and functions
BASIC Language Reference
Manual 1746-RM001A-US-P
A programming manual with
detailed instructions on installing
and using BASIC Development
Software to program the BASIC
and BASIC-T modules.
BASIC Development
Software Programming
Manual
1746-PM001A-US-P
An overview of the SLC 500
family of products SLC 500 System Overview 1747-SO001A-US-P
A description of how to install
and use a Modular SLC 500
Processor
Modular Hardware Style
Installation and Operation
Manual
1747-6.2
A reference manual that contains
status file data and instruction
set information for SLC 500
processors
SLC 500™ and MicroLogix™
1000 Instruction Set
Reference Manual
1747-6.15
A description of how to install
and use a module that acts as a
bridge between DH485 networks
and devices requiring DF1
protocol.
DH485/RS-232C Interface
Module User’s Manual 1747-6.12
In-depth information on
grounding and wiring
Allen-Bradley programmable
controllers
Allen-Bradley
Programmable Controller
Grounding and Wiring
Guidelines
1770-4.1
A glossary of industrial
automation terms and
abbreviations
Allen-Bradley Industrial
Automation Glossary AG-7.1
An article on wire sizes and types
for grounding electrical
equipment
National Electric Code Published by the National
Fire Protection Association
of Boston, MA

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Terms and Abbreviations
The following terms and abbreviations are specific to this product. For a complete
listing of Allen-Bradley terminology, refer to the Allen-Bradley Industrial
Automation Glossary, publication number ICCG-7.1.
•Module SLC 500 BASIC and BASIC-T Modules (catalog numbers
1746-BAS and 1746-BAS-T)
•BASIC development software BASIC Development Software (catalog
number 1747-PBASE)
•DH485 network communication protocol
•EPROM Erasable Programmable Read Only Memory
•MTOP system control value that holds the last valid memory address
•RS-232/423 serial communication interface
•RS-422 differential communication interface
•RS-485 network communication interface
•SLC 500 SLC 500 fixed and modular controller
Conventions Used in this
Manual
The following conventions are used throughout this manual:
•Bulleted lists such as this one provide information, not procedural steps.
•Numbered lists provide sequential steps or hierarchical information.
•Italic type is used for emphasis.
•Text in this font indicates words or phrases you should type.
•Key names match the names shown and appear in bold, capital letters within
brackets (for example, [ENTER]).
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Rockwell Automation
Support
Rockwell Automation offers support services worldwide, with over 75 Sales/
Support Offices, 512 authorized Distributors and 260 authorized Systems
Integrators located throughout the United States alone, plus Rockwell Automation
representatives in every major country in the world.
Local Product Support
Contact your local Rockwell Automation representative for:
•sales and order support
•product technical training
•warranty support
•support service agreements
Technical Product Assistance
If you need to contact Rockwell Automation for technical assistance, please review
the information in the appropriate chapter first. Then call your local Rockwell
Automation representative.
Your Questions or Comments on this Manual
If you find a problem with this manual or if you have any suggestions for how this
manual could be made more useful to you, please contact us at the address below:
Rockwell Automation
Control and Information Group
Technical Communication, Dept. A602V
P.O. Box 2086
Milwaukee, WI 53201-2086

1Publication 1746-UM004A-US-P
Chapter
1
Module and Development Software Overview
This chapter introduces you to the SLC 500™ BASIC and BASIC-T modules and
the BASIC Development Software. After reading this chapter you should be
familiar with the:
•module components and features
•BASIC Development Software features
•typical configurations of the module
•module hardware specifications
•module-related products
Overview
The module and the development software provide the following benefits:
•easy data collection from user devices
•integrated program debugging environment
•operator interface capabilities
•flexible program and data storage options
•high-level math
•clock/calendar
•high-level programming environment
•extensive online help system
•easy access to editor functions through user interface
•advanced text editor windows
BASIC and BASIC-T
Modules
The modules are single-slot modules that reside in a SLC 500 fixed or modular
controller chassis. Use the module as:
•a foreign device interface
•an operator interface
NOTE The 1746-BAS-T is a higher-speed version of the 1746-BAS
module with identical hardware features. The modules can be
interchanged, except that the 1746-BAS-T uses different
(optional) memory modules. Due to the high speed of the
1746-BAS-T, existing programs written for the 1746-BAS may
require adjustment for identical operation using the faster
1746-BAS-T module.
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1-2 Module and Development Software Overview
Figure 1.1 Module with Door Open
Hardware Features
The module provides the following hardware features:
•24K bytes of battery backed RAM for storage of user programs and data
•capacitive backup of RAM during battery change
•socket for a standard 1747-M1, M2, M3, or M4 memory module (1746-BAS)
for non-volatile storage of user programs
•socket for a 1771-DBMEM1 or -DBMEM2 memory module (1746-BAS-T)
for non-volatile storage of user programs
•battery-backed, 24-hour clock/calendar
•free-running clock with 5 ms resolution
•two isolated 9-pin D-shell serial ports (PRT1 and PRT2) that provide RS-232/
423, RS-422, and RS-485 communication with I/O devices
•Port PRT2 provides DF1 full-duplex or half-duplex slave protocol for SCADA
applications
•one RJ-45 port (DH485) that provides communication over the DH485
network
•multiple LEDs for operator interface
•SLC 500 backplane interface
PR T1
5
4
3
2
1
9
8
7
6
PR T2
5
4
3
2
1
9
8
7
6
DH485
BASIC
PR T1
5
4
3
2
1
9
8
7
6
PR T2
5
4
3
2
1
9
8
7
6
DH485
BASIC-T

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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 baud. The default settings are 1200 baud,
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 baud.
•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.
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Module LEDs
There are eight LEDs on the front of the module. These LEDs are used for module
diagnostics and operator interface. The LEDs and their indications are shown on
page 1-4.
Figure 1.2 Module LEDs
Table 1.1 Module LEDs
LED Color Status Indication
ACT Green ON The module is receiving power from the backplane and is
executing BASIC code.
Blinking The module is in Command mode.
OFF The module is not receiving power from the backplane. A fault
condition exists.
485 Green ON Port DH485 on the module is active for communication.
OFF Port DH485 on the module is not active for communication.
PRT1 Green Blinking Port PRT1 on the module is transmitting or receiving signals.
OFF Port PRT1 on the module is not transmitting or receiving
signals.
PRT2 Green Blinking Port PRT2 on the module is transmitting or receiving signals.
OFF Port PRT2 on the module is not transmitting or receiving
signals.
FAULT Red ON A system problem was detected during background
diagnostics. Contact your local Allen-Bradley representative.
OFF No system problems are detected during background
diagnostics.
BA LOW Red ON The voltage of the battery that backs up RAM is low. A new
battery is needed.
OFF The voltage of the battery that backs up RAM is at an
acceptable level.
LED1 Amber ON User definable. LED activated through the user program.
OFF User definable. LED de-activated through the user program.
LED2 Amber ON User definable. LED activated through the user program.
OFF User definable. LED de-activated through the user program.
ACT
485
PR T1
PR T2
FAULT
BA LOW
LED1
LED2
BASIC

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BASIC Development
Software (1747-PBASE)
The BASIC Development Software provides the user with a structured and
efficient means to create BASIC programs for the module. This software is loaded
into a an MS-DOS compatible personal computer. It uses the personal computer
to facilitate editing, compiling (translating), uploading, and downloading of
BASIC programs.
The BASIC Development Software has a menu-driven, window-type environment
that offers:
•pull-down menus to access all editor functions
•function key access to frequently used functions
•multiple window editing
•cut and paste support between windows
•search and replace support
•search between files support
•built-in calculator that can paste results into your program
•ASCII look-up table
•line draw editor to create operator interface images without having to enter
ASCII characters
•keystroke macros
•undo and redo functions
•extensive help messages for each menu, menu option, and for keywords
embedded in the menu text
•capability to create user-defined macro libraries
•sophisticated debug tools including watch windows, single-step operation, and
go to cursor breakpoint operation
•syntax checked translations to native BASIC to reduce debug time
•BASIC translator that steps through the BASIC program and identifies errors
•ASCII terminal mode
•hex file transfer support
The development software enables you to program the module from a personal
computer connected to either the module’s DH485 or PRT1 ports. The software
allows direct access to the module through terminal emulation over an RS-232/423
or DH485 network.
Refer to the BASIC Development Software Programming Manual (publication
number 1746-PM001A-US-P) for additional information on the software.
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Typical Configurations
The typical configuration of the SLC system that incorporates your BASIC or
BASIC-T module depends on whether the module is:
•integrated with a SLC 500 fixed or modular controller
•programmed directly with an ASCII terminal or programmed using a personal
computer with the BASIC Development Software 1747-PBASE
•communicating with a DH485 network or with an external source through a
modem using DF1 protocol
Module Integration
The module is a single-slot module that is inserted into a slot in the expansion
chassis of your SLC 500 fixed controller or an open slot in the 1746 I/O chassis of
your SLC 500 modular controller. The module may be inserted in any slot of the
1746 I/O chassis except the first slot of the first chassis, which is reserved for the
SLC modular processor. Typical SLC fixed and modular configurations are shown
in the following figures.
Figure 1.3 Typical Configurations
SLC 500 Fixed Controller Slot
Filler
BASIC
or
BASIC-T
Power Supply SLC 500
Modular
Processor
Input
Module
Output
Module
BASIC
or
BASIC-T

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Module and Development Software Overview 1-7
Module Programming Interface
Your module can be programmed using an ASCII terminal with ASCII terminal
emulation software. You can also use a personal computer with the BASIC
Development Software (catalog number 1747-PBASE). Use an ASCII terminal to
enter a BASIC program one line at a time to the module. Use a personal computer
with the BASIC Development Software to create a BASIC program that is then
downloaded to your module. Typical programming interface configurations
include:
•ASCII terminal interface – Figure 1.4
•BASIC Development Software interface (RS-232) – Figure 1.5
•BASIC Development Software interface (DH485) – Figure 1.6
ASCII Terminal Interface
Use an ASCII terminal to enter a BASIC program one line at a time to your
module through port PRT1. The ASCII terminal connected to the module must
be an industrial terminal, workstation, or personal computer (without the BASIC
Development Software) that communicates in alphanumeric mode. An ASCII
terminal can also be used to display charts or graphs generated by the BASIC
program. Figure 1.4 shows a typical ASCII terminal interface.
Figure 1.4 Module ASCII Terminal Interface
In this configuration, the RS232 port on the back of your industrial terminal or
personal computer is connected to port PRT1 on your module. Port PRT1 must be
configured as the program port. See chapter 3 for additional information on port
configuration.
ASCII Terminal or Personal
Computer Running ASCII
Terminal Emulation Software
Null Modem
Cable
SLC 500 Controller with BASIC or BASIC-T
Spare Allen-Bradley Parts

Publication 1746-UM004A-US-P
1-8 Module and Development Software Overview
BASIC Development Software Interface (RS232)
Use a personal computer with the BASIC Development Software (PBASE) to
create a BASIC program that is then downloaded to your module. PBASE provides
an efficient means to edit, compile (translate), upload, and download BASIC
programs. Refer to the BASIC Development Software Programming Manual
(publication number 1746-PM001A-US-P) for additional information on this
software.
Figure 1.5 BASIC Development Software Interface (RS-232)
In this configuration, the serial port on the personal computer is connected to port
PRT1 on the module. The personal computer communicates with the module
through terminal emulation over an RS-232 interface. Port PRT1 must be
configured as the program port. See chapter 3 for additional information on port
configuration.
IMPORTANT When using the BASIC Development Software to interface with
the RS-232 port of the module, PBASE must be configured for
RS-232 communication through the configuration and terminal
selection menus. Refer to the BASIC Development Software
Programming Manual (publication number
1746-PM001A-US-P) for additional information.
Personal Computer with BASIC
Development Software
Null Modem
Cable
SLC 500 Controller with BASIC or BASIC-T