IAI X-SEL

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INTELLIGENT ACTUATOR
Part 3 Controller Data Structure
3. Points to Note
Point to note when transferring data and writing to the flash memory
Never turn off the main power while data is being transferred or written to the flash
memory. The data will be lost and the controller operation may be disabled.
Point to note when saving parameters to a file
The encoder parameters are stored in the EEPROM of the actuator’s encoder itself (unlike other
parameters, they are not stored in the EEPROM of the controller). The encoder parameters will be
read from the encoder’s EEPROM to the controller when the power is turned on or upon software
reset.
Therefore, if the parameters are saved to a file after turning on the controller (or restarting it via a
software reset) without an actuator (encoder) connected, the encoder parameters saved to the file will
become invalid.
Point to note when transferring a parameter file to the controller
When a parameter file is transferred to the controller, the encoder parameters will be transferred to the
EEPROM of the encoder (excluding manufacturing/function information).
Therefore, if the parameter file transferred to the controller has been read from a controller that was
started without an actuator connected, invalid encoder parameters will be written to the encoder’s
EEPROM (provided that an actuator is connected to the controller to which the file was transferred).
When saving the parameters to a file, do so with an actuator connected to the controller.
Note on increased number of positions
On a controller with expanded memory (with gateway function), the number of position data has been
increased to 20000 points.
Accordingly, take note of the following point:
* If a battery backup memory is used (other parameter No. 20 = 2), position Nos. 1 to 10000 are
saved in the battery backup memory, while position Nos. 10001 to 20000 are saved in the flash
ROM of the main CPU. Accordingly, data of position Nos. 10001 to 20000 will be lost if the power is
turned off or a software reset is performed without writing the data to the flash ROM first, and next
time the controller is started the data last written to the flash ROM will be loaded. To save this data,
write it to the flash ROM. Also note that if a battery backup memory is not used (other parameter
No. 20 = 2), all data from position data Nos. 1 to 20000 is saved in the flash ROM of the main CPU.
To save this data, also write it to the flash ROM.