IAI PSEL, Operation Manual

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3. Program
200
[2] Saving of data
On SSEL controllers, data is saved as shown below.
Even if you transfer data to your controller via the PC software or teaching pendant, the data
is only written to the temporary memories and will be cleared once the power is turned OFF
or controller is reset, as shown below.
To save the data without fail, be sure to write the data you want to save to the flash ROM.
[System-memory backup battery is not used]
Other parameter No. 20 = 0 (System-memory backup battery not installed)
Since programs, parameters, symbols and positions are loaded from the flash memory upon
restart, these data in the temporary memories will return to the conditions before editing unless
written to the flash memory. The controller always operates according to the data in the main
CPU memory (excluding parameters).
Note: SEL global data cannot be retained unless the backup battery is installed.
SEL global data is cleared once the control power is turned OFF or software is reset.
Error lists are cleared once the control power is turned OFF.
Data edited on the PC
or teaching pendant
Data is retained while
the power is ON,
but cleared upon reset
Data is retained even after
the power is turned OFF
PC
software
TP
Transfer
Write to flash memory
Main CPU memory
Programs
Parameters (other than
slave parameters)
Symbols
Positions
SEL global data
(flags, variables, strings)
Error lists
Transfer upon reset
Main CPU flash memory
Slave card memory
Slave card parameters
(driver card
parameters)
Transfer
Transfer
Transfer Slave card parameters
(encoder parameters)
Transfer upon reset
Transfer upon reset
Transfer upon reset
Transfer upon reset
Write to flash memory
Slave card parameters
(driver card parameters)
(Cannot be changed)
Slave card memory