Rockwell Automation 1771-DB BASIC MODULE - Manual (Page 349)

C Appendix
C –1
Troubleshooting
This appendix describes: On page:
interpret the indicator lights C –1
error messages from BASIC C –2
error messages from CALL routines C –4
The BASIC module has 10 indicator LED indicators.
If this LED: Status is: This indicates:
ON the BASIC module is receiving power from the backplane
and is executing BASIC code
ACTIVE (green) blinking the BASIC module is in Command mode
OFF the BASIC module is not receiving power from the
backplane. A fault condition exists.
FLT (red)
ON a system problem was detected during background
diagnostics. Contact your local Allen–Bradley
representative.
FLT (red)
OFF no system problems detected during background
diagnostics
ON port DH485 on the BASIC module is active for
communication
DH485 (green)
OFF port DH485 on the BASIC module is not active for
communication
ON the voltage of the battery that backs up RAM is low. A new
battery is needed. See Chapter 3.
BTLO (red)
OFF the voltage of the battery that backs up RAM is at an
acceptable level
ON user definable. LED activated through the user program.
LED1 (amber)
OFF user definable. LED de-activated through the user program.
ON user definable. LED activated through the user program.
LED2 (amber)
OFF user definable. LED de-activated through the user program.
blinking port PRT1 on the BASIC module is transmitting signals
PT1X (green)
OFF port PRT1 on the BASIC module is not transmitting signals
blinking port PRT2 on the BASIC module is transmitting signals
PT2X (green)
OFF port PRT2 on the BASIC module is not transmitting signals
blinking port PRT1 on the BASIC module is receiving signals
PT1R (green)
OFF port PRT1 on the BASIC module is not receiving signals
blinking port PRT2 on the BASIC module is receiving signals
PT2R (green)
OFF port PRT2 on the BASIC module is not receiving signals
What’s in This Appendix?
Interpret the Indicator Lights