Omron SYSMAC C500-NC222-E Operation Manual page 74

Two-axis position control unit (nc221 mode)
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PC Programs
Program
Storing RAM Data
64
Bit to initiate
data transfer
5000
5002
5001
5002
5004
5003
PCU operation is based on the parameters and positioning actions contained
in RAM. When power is turned on, the data in EEPROM is read into RAM.
The data in RAM can then be changed by transferring data with WRIT(87) or
from the Teaching Box. This data will be deleted and replaced by EEPROM
data the next time power is turned off and back on. There is a command
available, however, to write RAM data to EEPROM (STORE), as well as one
to restore EEPROM data to RAM (RESTR). These commands can be used
along with WRIT(88) (or the Teaching Box) to control the data in RAM. This
situation is illustrated below.
Data transfer
(WRIT(87) or
from Teaching
Box)
Refer to 6-2 Command Descriptions for details on STORE and RESTR.
Note STORE should not be executed more than 5,000 times.
DIFU(13)
5000
WRIT(87)
#0027
DM1000
00
5001
(=)
5002
25506
WRIT(87)
5003
(=)
5004
25506
STORE
É É É É É É
É É É É É É
RAM
RESTR or
É É É É É É
power-on
É É É É É É
É É É É É É
Section 4-2
When NC222-E is allocated
IR 000 and IR 001
This section can be used for
a second transfer when more
than 127 words are required.
EEPROM

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