Parameters, Data Set Selection And Cyclic Writing - BONFIGLIOLI ACTIVE Manual

10.1.4
Parameters to be set can be seen from the parameter list referring to the configura-
tion of the standard operating instructions. In the parameter list, state whether a pa-
rameter is data set change-over capable (data set/INDEX = 1 to 4) or only exists once
(data set/INDEX = 0).
The parameter list also gives information about the display format of a parameter and
its type (int/uint/long). String parameters cannot be transmitted due to the possible
number of bytes.
The values transmitted are always integer values. For values with decimal places, the
decimal point is not transmitted.
The word IND passes on the required data set of the parameter. In the present appli-
cation, the parameter set number 0 is simply assigned to existing parameters; a selec-
tion from multiple (data set change-over capable) existing parameters is done by in-
putting a number from 1 to 4.
The actual parameter value is transmitted in the PWE area; as a 16 Bit value (int/uint)
it occupies PWEl, as a 32 Bit value (long) PWE high and PWE low, with the high word
being in PWE high.
Typically, parameters are addressed via the data set (IND) = 0, 1 to 4. The input of
the values is thus done on the controller and automatically into the EEPROM. If values
are written cyclically with a higher repeat rate, no entry may be made into the
EEPROM, as the latter only possesses a limited number of admissible writing cycles
(approx. 1 million cycles).
Caution!
To avoid this, cyclically written data can only be transmitted into the RAM without a
writing cycle onto the EEPROM. The data are then not stored secure against zero volt-
age and must be written again after a Power off/on.
This mechanism is activated by the target data set being increased by five in the
specification of the data set (IND).
Entry into data set 0
Entry into data set 1
Entry into data set 2
Entry into data set 3
Entry into data set 4
Writing access to data set change-over capable parameters is to be considered as a
further special point. If the values of a data set change-over capable parameter are to
be set to the same value in all data sets, the parameter can be written via the data
set (IND) 0.
06/05
06/05

Parameters, data set selection and cyclic writing

If the number of admissible writing cycles is exceeded, the EEPROM is
destroyed.
Entry only into the RAM:
EEPROM
Data set (IND) = 5
Data set (IND) = 6
Data set (IND) = 7
Data set (IND) = 8
Data set (IND) = 9
RAM
15
15