Search:
Functions and characteristics without effects and causes
Explanation:
A search will be performed for functions and characteristics, which have neither effects nor causes in the function net
Example:
Abbreviations
- ASIL = Automotive safety integrity level
- BF = Base failure of a base function
- BFn = Base function of a base structure element
- BSE = Base structure element
- Cl Prc = Classification for process characteristic
- Cl Prd = Classification for product characteristic
- Cl Req = Classification for requirement
- CM = Control method
- DA = Detection action
- DC = Diagnostic coverage
- DSCF = Dangerous safety critical failure
- Er Det = Error detection
- Er Resp = Error response
- F = Failure
- FIT = Failure in time
- Fn = Function
- FSM = Functional safety management
- IE = Inspection equipment
- LF = Latent fault
- LFM = Latent fault metric
- OC = Operating condition
- PA = Preventive action
- PE = Process element
- PFH = Probability of failure per Hour
- PMHF = Probabilistic metric for random hardware failures
- PrcC = Process characteristic
- PrdC = Product characteristic
- QM = Quality method
- QR = Quality rule
- Req = Requirement
- RMR = Risk Matrix Ranking
- RP = Reaction plan
- SE = Structure element
- SE ErDet = Structure element for error detections
- SE ErResp = Structure element for error responses
- SFF = Safe failure fraction
- SG = Safety Goal
- SIL = Safety integrity level
- SM = Organisational-SE for “safety mechanisms”
- SPF = Single point fault
- SPFM = Single point fault metric
- TF = Top failure of a top function
- TFn = Top function at root element
- TS = Test sample
- The above structure consists of three structure elements, each of which have two functions (
) assigned. Two additional elements are anchored at the root element and both the
elements SE1 A and SE1 B each have a product characteristic (
) and process characteristic (
).
- With the hot-click icon “Function net” active (Display options), it is possible to see in the structure list which functions and characteristics are linked to each other.
- This Quality Rule detects functions and characteristics which have neither effects nor causes in the function
net. This hot-click icon indicates that a function has neither of these:
.
Search result: 
The following are hits: Functions TFn3, Fn2 and the process characteristic PrcC3.