Rockwell Automation 1756-SPESMNRMXT GuardLogix Controllers User Manual - Manuel (Page 137)

Rockwell Automation Publication 1756-UM020I-EN-P - August 2012 137
Status Indicators Appendix A
The 1756-L7SP safety partner has an OK status indicator.
1756-L7xS Controller Status
Display The 1756-L7 xS controller status display scrolls messages that provide
information about the controller’s firmware revision, energy storage module
(ESM) status, project status, and major faults.
Safety Status Messages
The primary controller display may show the following messages. The safety
partner displays ‘L7SP’.
OK Off No power is applied.
Green The controller is operating with no faults.
Red, Flashing • Nonrecoverable fault or recoverable fault not handled in the fault
handler. All user tasks, both standard and safety, are stopped.
• If the controller is new, out-of-the-box, it requires a firmware
upgrade. The status display indicates Firmware Installation
Required.
Red • The controller is completing power-up diagnostics
• A nonrecoverable major fault occurred and the program was cleared
from memory.
• The charge of the capacitor in the Energy Storage Module (ESM) is
being discharged upon powerdown.
• The controller is powered but inoperable.
• The controller is loading a project to nonvolatile memory.
Table 46 - 1756-L7SP Status Indicator
Indicator Status Description
OK Off No power is applied.
Green The safety partner is operating with no faults.
Red Powering up or nonrecoverable controller fault.
Table 45 - 1756-L7xS Primary Controller Status Indicator Descriptions
Indicator Status Description
Table 47 - Safety Status Display
Message Interpretation
No Safety Signature Safety Task is in Run mode without a safety task signature.
Safety Partner Missing The safety partner is missing or unavailable.
Hardware Incompatible The safety partner and primary controller hardware is incompatible.
Firmware Incompatible The safety partner and primary controller firmware revision levels are
incompatible.
No CST Master A coordinated system time (CST) master has not been found
Safety Task Inoperable The safety logic is invalid. For example, a mismatch occurred between the primary
controller and the safety partner, a watchdog timeout occurred, or memory is
corrupt.
Safety Unlocked The controller is in Run mode with a safety signature, but is not safety-locked.