User guide

6–2 Troubleshooting
1203–5.5 September 1995
!
ATTENTION: Servicing energized industrial control
equipment can be hazardous. Electrical shock, burns,
or unintentional actuation of controlled industrial
equipment may cause death or serious injury. Follow
the safety-related practices of NFPA 70E, Electrical
Safety for Employee Workplaces, when working on or
near energized equipment. Do not work alone on
energized equipment.
!
ATTENTION: Do not attempt to defeat or override
fault circuits. You must determine and correct the
cause of a fault indication before attempting operation.
Failure to correct a drive or system malfunction may
result in personal injury and/or equipment damage due
to uncontrolled machine system operation.
LED Troubleshooting Table
Indicator Color Description Recommended Action
Serial Sts Green (blinking) Link OK, off–line
•Check configuration switch settings.
•Check for serial cable connection.
•Cycle Serial Communications Module power.
Green (steady) Link OK, on–line None, system functioning properly
Red (blinking)
Link was on–line and is now
off–line
Check for failed devices or link problems.
Red (steady) Faulted
•Check configuration switch settings.
•Check for serial cable connection.
•Cycle power, replace module.
SCANport Sts Green (blinking) Link OK, not connected
•Check configuration switch settings.
•Check for serial cable connection.
•Cycle power.
Green (steady) Link OK, connected None
Red (blinking)
Link was connected and is now
not connected
Check for failed devices or link problems.
Red (steady) Faulted
•Check configuration switch settings.
•Check for serial cable connection.
•Cycle power, replace module.
TX Off No transmission occurring
•Send serial data again
Flash Transmission occurring None
RX Off No transmission received
•Check data device to verify it is sending data
Flash Characters being received None