178 Rockwell Automation Publication 1769-UM022C-EN-P - June 2018
Chapter 12 Monitor Status and Handle Faults
The Safety Status button itself indicates whether the controller is safety-locked
or -unlocked, or faulted. It also displays an icon that shows the safety status.
Icons are green when the controller is safety-locked, yellow when the controller
is safety-unlocked, and red when the controller has a safety fault. When a safety
task signature exists, the icon includes a small check mark.
Monitor Connections
You can monitor the status of standard and safety connections.
All Connections
If communication with a device in the I/O configuration of the controller does
not occur for 100 ms, communication times out and the controller produces
the following warnings:
• An I/O fault status code is indicated on the status display of the
Compact GuardLogix® 5370 controller.
• The I/O indicator on the front of the controller flashes green.
• An alert symbol shows over the I/O configuration folder and over
the device that has timed out.
• A module fault is produced, which you can access through the
Connections tab of the Module Properties dialog box for the module or
via the GSV instruction.
Table 33 - Safety Status Icon
If the safety status is This icon is displayed
Safety Task OK
Safety Task Inoperable
Safety Unavailable
Offline
ATTENTION: Safety I/O and produce/consume connections cannot
be configured to automatically fault the controller when a
connection is lost. Therefore, you need to monitor for connection
faults to be sure that the safety system maintains SIL 3/PLe integrity.
See Safety Connections
on page 179.
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