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Publication SAFETY-AT017B-EN-P – July 2011
Safety Tags
The safety logic shown below requires the creation and use of the
following safety tags.
Safety Logic
The following code should be programmed in a routine within your
Safety Task in the GuardLogix controller.
Emergency Stop Safety Logic
The E-stop instruction provides SIL 3 level diagnostics for a dual-
channel emergency stop function. The E-stop monitors input channels for
consistency and detects and traps faults (inconsistency greater than
500 ms).
The Reset Type is configured as Automatic for continuous monitoring of
input device states. Using Automatic reset functionally moves the Safety
Output Reset function from the E-stop instruction (Circuit Reset) to the
Safety Output logic. Because the Circuit Reset function is not performed
