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Functionalities  for  data  recording
Functionalities  of  this  type  are  used  to  determine  and  provide  information  which  is  required  by  other
functionalities.  They  consist  of  the  following  elementary  individual  functions:
•  Record  input  data
•  Evaluate  data
•  Provide  set  values/information

Functionalities  for  selection  of  system  data
Functionalities  of  this  type  are  necessary  for  executing  the  task  “State  identification”.  These  functionalities ­
  determine  from  a  set  of  input  data  which  may  be  available  from  several  sources  a  "system  datum"
for  the  respective  state  variable.  The  system  datum  is  a  state  variable  of  a  given  type  which  shall  be
used  obligatory  by  all  functionalities  or  functions  concerned.  Functionalities  for  selection  of  system  data
are  composed  of  the  following  functions:
•  Record  data
•  Evaluate  data
•  Compare  date
•  Assess  result  of  comparison
•  Select  information  to  be  provided
•  Provide  information

Functionalities  for  the  set/actual  comparison
Functionalities  of  this  type  compare  a  set  value  for  a  certain  datum  with  a  current  actual  value.  The  deviation ­
  serves  as  input  information  for  adjustment/control.  These  functionalities  are  implemented  by  the
following  functions:
•  Record  set  value
•  Record  actual  value
•  Record  assessment  criteria
•  Compare  set  value  and  actual  value
•  Assess  comparison
•  Provide  result  of  comparison
The  function  “Record  assessment  criteria”  reads  in  the  information  which  is  necessary  for  assessment
of  the  comparison.  The  question  may  for  example  be  examined  as  to  whether  the  difference  between
set  and  actual  lies  within  a  given  limit.  The  functions  “Record  assessment  criteria”  and  “Assess  comparison” ­
  are  optional.
Functionalities  for  influencing  state  variables
It  is  characteristic  of  functionalities  of  this  type  that  they  possess  an  elementary  individual  function  “Act”.
In  general,  such  functionalities  consist  of  the  following  functions: