Siemens 6MD85, Manual

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Figure 3-36 Influence Options for a Binary Input Signal (SPS Input Signal)
Quality Attribute: Validity
The Validity attribute can have the values
good
or
invalid (reserved
and
questionable
were already
replaced at the input end of the device by the value
invalid
).
The input signal source is
invalid
. The current data value of the source signal is ignored. You can
select between the following options:
•
Further process last valid data value of the source signal
(this is the default setting with only a few exceptions)
•
Set the binary value to be processed further to 0.
•
Set the binary value to be processed further to 1.
This configuration option is necessary to satisfy different
applications.
The function health switches to Warning.
The input signal source is
good
. The source signal data value is processed further.
Quality Attribute: Test
•
The input signal source and
processed function are in test state.
•
The input signal source is not in test
state and the function to be
processed is in test state.
The source signal data value is processed further.
System Functions
3.3 Processing Quality Attributes
SIPROTEC 5, High-Voltage Bay Controller, Manual 89
C53000-G5040-C015-9, Edition 11.2017