CompactLogix Controllers 25
Publication
1768-IN004D-EN-P - December 2009
Safety Status Indicators (1768-L43S and 1768-L45S Controllers only)
Indicator State Description
SAFE RUN
Off The user safety task or safety outputs are disabled.
The controller is in PROG mode, Test mode, or the
safety task is faulted.
Green The user safety task and safety outputs are enabled.
The safety task is executing. Safety signature is
present.
Flashing green The user safety task and safety outputs are enabled.
The safety task is executing. Safety signature is not
present.
SAFETY
TASK
Off No partnership established.
Green Safety controller status is OK. The coordinated
system time (CST) is synchronized and safety I/O
connections are established.
Flashing green Safety controller status is OK. The coordinated
system time (CST) is not synchronized.
Red Safety partnership was lost.
Flashing red Safety task is inoperable.
SAFETY
LOCK
Off Safety task is not locked.
Green Safety task is locked.
SAFETY OK
Off No power is applied.
Green The safety partner is OK.
Flashing green The safety partner is storing or loading a project to
or from nonvolatile memory.
Red The safety partner detected a nonrecoverable major
fault, so it cleared the project from its memory.
Flashing red • The internal safety partner requires a firmware
update or a firmware update is in progress.
• A recoverable major fault occurred on the
safety partner.
• A nonrecoverable major fault occurred on the
safety partner.
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