1 how to save data – IAI America SSEL User Manual

Page 94

Part 1 Installation

5.1 How to Save Data

The flow to save data in the SSEL controller is illustrated below.
When data is transferred from the PC software or teaching pendant to the controller, the data is only written to
the main CPU memory as shown in the diagram below and will be erased once the controller is powered down
or reset.
For important data, always write to the flash memory so that they will not be lost.

5.1.1 Factory Settings: When the System-Memory Backup Battery is Not Used

Other parameter No. 20 = 0 (System-memory backup battery not installed)

Since the programs, parameters and symbols are read from the flash memory at restart, the data in the
temporary memory will remain the same as the original data before edit unless the edited data are written to the
flash memory.
The controller always operates in accordance with the data in the main CPU memory (excluding the parameters).
Note: SEL global data cannot be retained if the backup battery is not installed.

SEL global data will be cleared once the control power is turned off or a software reset is
executed.
The error list will be cleared once the control power is turned off.

Data edited on the PC

or teaching pendant

Data will be retained while the power

is on and cleared upon reset

Data will be retained even after

the power is turned off

software,

Transfer

Main CPU memory

Programs

Parameters

(other than slave card

parameters)

Symbols

Positions

Write to flash memory

Transfer upon reset

Transfer

Main CPU flash memory

Slave card memory

Slave card parameters

(encoder parameters,

etc.)

SEL global data

(flags, variables, strings)

Error lists

Transfer

Slave card
parameters
(variable portions of
driver parameters)

Write to flash memory

Transfer upon reset

Slave card memory

Slave card

parameters

(fixed portions of

driver parameters)

(Cannot be changed)