IAI PSEL, Operation Manual

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3. Program
191
[3] Notes
Caution
xx Notes on transferring data and writing it to the flash memory
Never turn OFF the main power while data is being transferred or written to the flash
memory, because data may be lost and the controller will no longer be able to operate.
x Notes on saving parameters to a file
Encoder parameters are stored in the EEPROM of the actuator’s encoder. (Unlike
parameters of other types, these parameters are not stored in the controller’s
EEPROM.) When the power is turned ON or software is reset, encoder parameters
are loaded from the EEPROM to the controller.
Accordingly, if parameters are saved to a file after the controller power was turned on
(or software was reset) while the actuator (encoder) was still not connected, the
encoder parameters in this file will become invalid.
x Notes on transferring a parameter file to the controller
When a parameter file is transferred to the controller, encoder parameters are
transferred to the encoder’s EEPROM (excluding manufacturing information and
function information).
Accordingly, if a parameter file is read and transferred to the controller after the
controller power was turned on while the actuator was still not connected, invalid
encoder parameters will be written to the encoder’s EEPROM (as they are transferred
to the controller to which the actuator is connected).
To save parameters to a file, do so while the actuator is connected.
x
Notes on increased number of positions
On controllers with increased memory capacity (with gateway function), the number of
position data points has increased to 20000.
Accordingly, take note of the following points:
* If the memory backup battery is used (other parameter No. 20 = 2), position data is
saved in the memory backup battery for position No. 1 to 10000, and in the main
CPU flash ROM for position No. 10001 to 20000. Accordingly, turning OFF the
power or resetting the software without writing the position data to the flash ROM
will cause the data of position No. 10001 to 20000 to be cleared and the data
previously written to the flash ROM will be loaded the next time the controller is
started. To retain your data, therefore, make sure you write it to the flash ROM. If
the memory backup battery is not used (other parameter No. 20 = 2), all position
data of No. 1 to 20000 is saved in the main CPU flash ROM. In this case, again,
write your data to the flash ROM to make sure the data is retained.