Siemens HydroRanger 200 HMI, Operating Instructions Manual

Page: 339 / 404

Communications
C.31 Format words
HydroRanger 200 HMI
Operating Instructions, 06/2018, A5E36281317-AC
337
C.30.2 Parameter-specific index method
Set Parameter Index Location (4.11.) (Page 270) = Parameter-specific.
1.
Write the primary index, secondary index, and data format values into the appropriate
format register.
2. Write the value to the appropriate parameter register.
C.31 Format words
Format words are unsigned integers that contain up to three values (described below). The
number of values used in the format words depends on the Parameter Index Location (4.11.)
(Page 270), that is used.
Parameter Index Location (4.11.) (Page 270), determines which of two methods is used to
access the format words: Global Index Method or Parameter-specific Index Method.
C.31.1 Global index method
Set Parameter Index Location (4.11.) (Page 270) = *Global
Only the final digit of the format word determines the decimal offset (below).
C.31.2 Parameter-specific index method
Set Parameter Index Location (4.11.) (Page 270) = parameter-specific
All three decimal fields are used to determine the parameter value’s primary index,
secondary index, and decimal offset.