Specifications

36 ControlLogix™ Controller and Memory Board
Publication
1756-IN101H-EN-P - June 2003
Interpret
C
ontroller LEDs
C
ontinued
Front Panel: Indicator: Color: Description:
BAT off The battery supports memory.
solid red Either the battery is:
• not installed. • 95% discharged and should be replaced.
OK off No power is applied.
flashing red If the controller is: Then:
a new controller The controller requires a firmware update. not a new controller Major fault occurred. To clear the fault, either:
• Turn the keyswitch ⇒ PROG ⇒ RUN ⇒ PROG.
• Go online with RSLogix 5000 software.
solid red The controller detected a non-recoverable fault, so it cleared the project from
memory. To recover:
1. Cycle power to the chassis. 2. Download the project. 3. Change to Run mode.
If the OK LED remains solid red, contact your Rockwell Automation representative or local distributor.
solid green The controller is OK flashing green The controller is storing or loading a project to or from nonvolatile memory.