Allen-Bradley SLC 500 BASIC User manual

Publication 1746-IN009B-EN-P - August 2005
Installation Instructions
SLC 500 BASIC and BASIC-T Modules
Catalog Numbers 1746-BAS and 1746-BAS-T
Inside . . .
For See Page
Important User Information 2
Hazardous Location Considerations 3
Environnements dangereux 3
About the BASIC and BASIC-T Modules 4
Before You Begin 5
Install the 1746-BAS Module and 1746-BAS-T
Module
12
Wire the PRT1 and PRT2 Communication Ports 13
Wire to the DH485 Port 18
Apply Power to your BASIC Module and
BASIC-T Modules
19
Configure the BASIC Module and BASIC-T
Module
19
Battery Replacement, Handling, Storage, and
Transportation (Cat. No. 1747-BA)
20
Specifications 24
Additional Resources 26

2SLC 500 BASIC and BASIC-T Modules
Publication 1746-IN009B-EN-P - August 2005
Important User Information
Solid state equipment has operational characteristics differing from those of electromechanical equipment.
Safety Guidelines for the Application, Installation and Maintenance of Solid State Controls (Publication
SGI-1.1 available from your local Rockwell Automation sales office or online at
http://www.literature.rockwellautomation.com) describes some important differences between solid state
equipment and hard-wired electromechanical devices. Because of this difference, and also because of the
wide variety of uses for solid state equipment, all persons responsible for applying this equipment must
satisfy themselves that each intended application of this equipment is acceptable.
In no event will Rockwell Automation, Inc. be responsible or liable for indirect or consequential damages
resulting from the use or application of this equipment.
The examples and diagrams in this manual are included solely for illustrative purposes. Because of the many
variables and requirements associated with any particular installation, Rockwell Automation, Inc. cannot
assume responsibility or liability for actual use based on the examples and diagrams.
No patent liability is assumed by Rockwell Automation, Inc. with respect to use of information, circuits,
equipment, or software described in this manual.
Reproduction of the contents of this manual, in whole or in part, without written permission of Rockwell
Automation, Inc., is prohibited.
Throughout this manual, when necessary, we use notes to make you aware of safety considerations.
WARNING Identifies information about practices or circumstances that can cause an explosion in
a hazardous environment, which may 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.
ATTENTION Identifies information about practices or circumstances that can lead to personal injury
or death, property damage, or economic loss. Attentions help you identify a hazard,
avoid a hazard and recognize the consequences.
SHOCK HAZARD
Labels may be located on or inside the equipment (e.g., drive or motor) to alert people
that dangerous voltage may be present.
BURN HAZARD
Labels may be located on or inside the equipment (e.g., drive or motor) to alert people
that surfaces may be dangerous temperatures.

SLC 500 BASIC and BASIC-T Modules 3
Publication 1746-IN009B-EN-P - August 2005
Hazardous Location Considerations
This equipment is suitable for use in Class I, Division 2, Groups A, B, C, D or
non-hazardous locations only. The following WARNING statement applies to use in
hazardous locations.
Environnements dangereux
Cet équipement est conçu pour être utilisé dans des environnements de Classe I,
Division 2, Groupes A, B, C, D ou non dangereux. La mise en garde suivante
s’applique à une utilisation dans des environnements dangereux.
ATTENTION WARNING: EXPLOSION HAZARD
Substitution of components may impair suitability for Class I,
Division 2.
Do not replace components or disconnect equipment unless
power has been switched off.
Do not connect or disconnect components unless power has been
switched off.
All wiring must comply with N.E.C. article 501, 502, 503, and/or
C.E.C. section 18-1J2 as appropriate.
ATTENTION AVERTISSEMENT: DANGER D’EXPLOSION
La substitution de composants peut rendre cet équipement
impropre à une utilisation en environnement de Classe 1, Division
2.
Ne pas remplacer de composants ou déconnecter l'équipement
sans s'être assuré que l'alimentation est coupée.
Ne pas connecter ou déconnecter des composants sans s'être
assuré que l'alimentation est coupée.

4SLC 500 BASIC and BASIC-T Modules
Publication 1746-IN009B-EN-P - August 2005
About the BASIC and BASIC-T Modules
The BASIC module is a single-slot module that resides in a SLC 500 fixed or
modular controller chassis. The BASIC-T module is a higher speed version of the
BASIC module with identical hardware features, including two configurable serial
ports for RS-232/423, RS-422, and RS-485 communication with I/O devices.
Communication to an SLC 500 controller can take place across the 1746 I/O
backplane or on the DH485 network through the module’s DH485 port. Both
modules also feature 24K bytes of battery-backed RAM, optional 8K or 32K byte
non-volatile memory modules, and multiple LED indicators for operator interface.
The modules can be programmed using an ASCII terminal or a personal computer
equipped with 1747-PBASE BASIC development software
TIP The 1746-BAS module is compatible with the 1747-M1 and
1747-M2 memory modules.
The 1746-BAS module is also compatible with existing 1747-M3
and 1747-M4 memory modules. The 1747-M3 and 1747-M4
memory modules are no longer available for sale from Rockwell
Automation.
The 1746-BAS-T module is compatible with the 1771-DBMEM1
and 1771-DBMEM2 memory modules.
TIP Due to the high speed of the 1746-BAS-T module, existing
programs written for the 1746-BAS module may require
adjustment for identical operation using the 1746-BAS-T module.

SLC 500 BASIC and BASIC-T Modules 5
Publication 1746-IN009B-EN-P - August 2005
Before You Begin
Before you begin to install the BASIC module and BASIC-T module, you need to:
•identify the communication ports,
•locate the LED indicators, and
•set the module jumpers.
Identify the Communication Ports
There are three communication ports on the front of the BASIC module and
BASIC-T module. They are:
•PRT1
•PRT2
•DH485
The PRT1 port is 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 bps.
The PRT2 port is 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 bps.
The DH485 port is 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.
Refer to Figure 1 for the location of the communication ports.
Locate the LED Indicators
There are eight LED indicators on the front of the BASIC and BASIC-T modules.
These LED indicators are used for module diagnostics and status indication. Refer to
Figure 1 for the location of the LED indicators.
IMPORTANT When DF1 protocol is selected on port PRT2, DH485
communications is disabled.

6SLC 500 BASIC and BASIC-T Modules
Publication 1746-IN009B-EN-P - August 2005
Figure 1 Communication Ports and LED Indicators
LED Color Status Indication
ACT Green ON The module is receiving power from the backplane and is
executing BASIC code.
Flashing 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 Flashing Port PRT1 on the module is transmitting or receiving signals.
OFF Port PRT1 on the module is not transmitting or receiving signals.
PRT2 Green Flashing 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
PRT1
5
4
3
2
1
9
8
7
6
PRT2
5
4
3
2
1
9
8
7
6
DH485
BASIC
BASIC
LEDs

SLC 500 BASIC and BASIC-T Modules 7
Publication 1746-IN009B-EN-P - August 2005
Set the Module Jumpers
The BASIC module and BASIC-T module have four sets of jumpers that you need to
set. Jumpers JW1 and JW2 configure ports PRT1 and PRT2. Jumper JW3 configures
the type of optional memory module. Jumper JW4 configures the program port.
Figure 2 Jumper Locations
ATTENTION Do not expose the module to surfaces or other areas that may
typically hold an electrostatic charge. Electrostatic charges can
alter or destroy memory.
SLC 500 BASIC MODULE
CAT SER SERIALNO. FRN 12345
6789
CONFIG 12345
6789
DF1 DH485
JW1
Memory Module
JW3
JW4
Battery JW2

8SLC 500 BASIC and BASIC-T Modules
Publication 1746-IN009B-EN-P - August 2005
Module Jumper JW1
Use jumper JW1 to select one of the following configurations for port PRT1.
•RS-232/423
•RS-422
•RS-485
Figure 3 Jumper JW1 Pin Assignments and Settings
ATTENTION Settings other than those shown for each jumper may cause
damage to the module.
13579
246810
Pin Assignments
RS-232/423 (Shipped Configuration)
RS-422
RS-485

SLC 500 BASIC and BASIC-T Modules 9
Publication 1746-IN009B-EN-P - August 2005
Module Jumper JW2
Use jumper JW2 to select one of the following configurations for port PRT2.
•RS-232/423
•RS-422
•RS-485
Figure 4 Jumper JW2 Pin Assignments and Settings
Module Jumper JW3
Use jumper JW3 to configure the memory module socket for one of the following
optional memory modules.
Memory Module Memory Size and Type Compatible with
1747-M1 8 K bytes EEPROM 1746-BAS module
1747-M2 32 K bytes EEPROM 1746-BAS module
1747-M3(1)
(1) This memory module is no longer available for sale from Rockwell Automation. Existing
1747-M3 and 1747-M4 memory modules are compatible with the 1746-BAS module and
1746-BAS-T module.
8 K bytes UVPROM 1746-BAS module
1747-M4(1) 32 K bytes UVPROM 1746-BAS module
1771-DBMEM1 8 K bytes EEPROM 1746-BAS-T module
1771-DBMEM2 32 K bytes EEPROM 1746-BAS-T module
13579
246810
Pin Assignments
RS-232/423 (Shipped Configuration)
RS-422
RS-485

10 SLC 500 BASIC and BASIC-T Modules
Publication 1746-IN009B-EN-P - August 2005
Figure 5 Jumper JW3 Pin Assignments and Settings
Module Jumper JW4
Use jumper JW4 to select one of the following configurations for the module ports.
•PRT1 Port = Program port with default communication settings
PRT2 Port = ASCII interface port
DH485 Port = Run time DH485 operation only
•PRT1 Port = ASCII interface port
PRT2 Port = ASCII interface port
DH485 Port = Program port with DH485 protocol
•PRT1 Port = Program port with programmed communication settings
PRT2 Port = ASCII interface port
DH485 Port = Run time DH485 operation only
•PRT1 Port = Program port with programmed communication settings
PRT2 Port = DF1 protocol
DH485 Port = Disabled
IMPORTANT The first setting shown in Figure 6 is the default configuration.
When the jumper is set in this position, the module always
powers up in Command mode at 1200 bps, no parity, 8 data bits,
and 1 stop bit.
246
135
Pin
Assignments
1747-M4 UVPROM(1)
(1) This memory module is no longer available for sale from Rockwell Automation. Existing 1747-M3 and
1747-M4 memory modules are compatible with the 1746-BAS module and 1746-BAS-T module.
1747-M1 EEPROM
1747-M2 EEPROM
1747-M3 UVPROM(1)
1771-DBMEM1 EEPROM
1771-DBMEM2 EEPROM
(Shipped Configuration)