BONFIGLIOLI Vectron ACTIVE CUBE - Parameters, Data Set Selection and Cyclic Writing

8.1.5 Parameters, data set selection and cyclic writing
For the parameters to be set, refer to the Operating Instructions according to the
chosen configuration. The parameter list specifies if a parameter is switchable (Data
set/INDEX = 1 through 4) or is available once only (Data set/INDEX = 0).
The parameter list also provides information about the display format of a parame-
ter and its type (int/uint/long). String parameters cannot be transmitted due to the
possible number of bytes.
The transmitted values are always integer numbers. In the case of decimal values,
the decimal point is not transmitted.
The IND word hands over the required data set of the parameter. In the present
application, the existing parameters are assigned data set number 0; to enable
switching amo
ng multiple parameters (switchable), a number from 1 through 4 is
assigned.
The actual parameter value is transmitted in the PWE range; as 16-bit value
(int/uint), it occupies PWEl, as 32-bit value (long) PWE-high and PWE-low, with the
high-word being in PWE-high.
If parameters are set to data set = 0, each of the four data sets is set to the same
value. A read access with data set = 0 to such parameters is only successful if all
four data sets are set to the same value. Otherwise, an error message will be dis-
played.
NOTE
The values are entered automatically in the EEPROM of the controller. However,
only a limited number of write cycles is permissible for the EEPROM (approx. 1 mil-
lion cycles). When this number is exceeded, the EEPROM will be destroyed.
• Values which are written cyclically at a high repetition rate should be written to
the RAM and not the EEPROM.
In the RAM, the data is not protected against loss of power. Once power supply is
disrupted, the data must be written again.
This procedure is activated when the target data set is increased by five when spec-
ifying the data set (IND).
Enter in RAM only
EEPROM
RAM
Entry in data set = 0
Data set (IND)= 5:
Entry in data set = 1
Data set (IND)= 6:
Entry in data set = 2
Data set (IND)= 7:
Entry in data set = 3
Data set (IND)= 8:
Entry in data set = 4
Data set (IND)= 9:
When writing to data set switchable parameters, note:
Via data set (IND) = 0, data set switchable parameters can be set to the same value
in all data sets.
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