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Define
Valuation Mode
In this step, you can:
- Define how a decision is made to accept or
reject inspection characteristics (valuation mode). These decisions are used
in the sampling procedure.
- Integrate your own function modules that allow
you to make the decision whether to accept or reject inspection
characteristics.
You must decide which one of the basic forms
you want to use. These forms are as follows:
- Manual decision
This is required for attributive characteristics (that is, characteristics for
which no values are recorded). These are characteristics you simply accept or
reject. This type of decision is also used in all other cases, where an
automatic valuation is not possible or allowed.
- Code valuation: a decision on the basis of
qualitative attributes.
The decisions are stored in the catalog for
characteristic attributes.
- A decision based on a sampling plan for
discrete characteristics (attributive inspection) with the following
options:
- Number of nonconforming units
This decision can
also be used in conjunction with tolerance specifications for the measured
values of quantitative characteristics.
- A decision based on a sampling plan for
quantitative characteristics (variable inspection) with the following
options:
- Complying with the distribution limits of the
characteristic values (s-method)
- Complying with the mean value limits of
characteristic values (checking the tolerance specifications)
This is a special application of the s-method, where k = 0.
- A decision based on a control
chart.
You can assign suitable, different valuation
rules to these basic forms and thereby define different valuation modes, such
as:
Simple valuation
- Code valuation. This valuation is based on the
attributes of qualitative characteristics
- Valuation based on the number of
defects
- Valuation based on the number of nonconforming
units
Valuation for the
mean value of quantitative characteristics, based on the tolerance
specifications
Valuation modes for procedures using sampling
schemes:
- Valuation according to sampling plan
for:
- Attribute inspection, for discrete
characteristics (in accordance with ISO 2859)
- Variable inspection, for continuous
characteristics (in accordance with ISO 3951)
The system supports
a single-sided and double-sided s-method.
Valuation based on the limits of a control
chart
Valuation modes for procedures using
independent multiple samples:
- Valuation according to the:
The valuation modes for procedures with
independent multiple samples are suitable for the valuation of characteristics
in:
- Inspections during production with inspection
points
- Inspection of partial lots
- Inspection of physical samples
- Inspection of maintenance objects
Standard
Settings
In the standard system, the table of valuation
rules is designed so that all commonly used valuation modes are supported at
characteristic level.
The tables have the
delivery class G. The following name range is reserved for the
user:
- Valuation mode 9*, A*, ... Z*
- Valuation mode 9*, A*, ... Z*
SAP
Recommendation
Use the valuation modes contained in the
standard system.
Do not delete any of the valuation modes contained in the standard system;
instead, you can
lock the entries you do not need.
Do not delete any of the valuation rules
contained in the standard system and under no circumstances delete
valuation rules A1, A2, A3, A4, A5, since these were used for
programming.
You only need to maintain your own valuation
rules in special cases.
Activities
1. Determine
whether additional or other valuation modes are used in your company. If
necessary, you must also define and program appropriate valuation rules for
these valuation modes.
2. Determine
whether you need additional or other valuation rules. Define these rules only
if required.
a) Substitute
the function modules
b) Program your
own function modules.
c) Enter the
valuation rules in the relevant valuation modes.
Additional
Information
Valuation Levels
The valuation of an inspection characteristic
is usually made up of several steps that take place at the following
levels:
- Valuation of original values or value
classes
In summarized results recording original values or value classes are not
valuated.
- Valuation of samples
If the system does not allow for multiple samples, there is no valuation at
sample level
- Valuation of a characteristic
The valuation rules mentioned above are active
at characteristic or sample level. At original value, or value class level,
the valuation rules that are dependent on the control key for the
characteristic are fixed automatically by the
system:
- Code valuation for qualitative characteristics
with characteristic attributes
- Valuation based on tolerance specifications
for quantitative characteristics
Definition of Valuation
Rules
The valuation rule is usually defined in the
valuation mode and is included in this way in the sampling procedure.
There are two valuation rules for inspecting independent multiple samples; one
for characteristic-based decisions for individual samples and one for
characteristic-based decisions for all samples. The valuation rule that links
the decisions relating to the individual samples to a collective decision for
the characteristic is stored directly in the sampling procedure, together with
the valuation mode for the samples.
For inspections with partial lots and
inspections with inspection points, for example, inspections during
production, inspection of physical samples or inspection of maintenance
objects (equipment or functional locations), two valuation rules are also
required. In these cases, the combining valuation rule is not stored in the
sampling procedure, but taken directly from this table.
If you want to change the collective valuation, you must substitute or change
the function module contained in the following valuation rules:
- A2 Inspection with partial lots
- A3 Inspection with inspection
points
- A4 Inspection of physical samples
- A5 Inspection of equipment or functional
locations