46 Rockwell Automation Publication 1756-RM012B-EN-P - April 2018
Chapter 5 Characteristics of Safety Tags, the Safety Task, and Safety Programs
Standard Tags in Safety Routines (Tag Mapping)
Controller-scoped standard tags can be mapped into safety tags, providing you
with a mechanism to synchronize standard and safety actions.
ATTENTION:
When using standard data in a safety routine, you are responsible
for providing a more reliable means to make sure that the data is used in an
appropriate manner. The use of standard data in a safety tag does not make it
safety data. You must not directly control a safety output with standard tag
data.
This example illustrates how to qualify the standard data with safety data.
Figure 16 - Qualify Standard Data with Safety Data
ONS
MappedBooleanTag LatchOneShot
Node30ComboModule:O.Pt03Data
Node30ComboModule:I.Pt07Data Node30ComboModule:O.Pt03Data
Latch circuit to help prevent automatic restart if the standard
input (MappedTag) is failed in a ‘stuck at 1’ state.
Safety Input Qualifier for Mapped Tag
Safety Output
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