Allen-Bradley SLC 500 BASIC Installation Instructions

6 SLC 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

Allen-Bradley SLC 500 BASIC Specifications

General

Brand	Allen-Bradley
Model	SLC 500 BASIC
Category	Control Unit
Language	English