Omron CS1G/H-CPUxx-EV1 Programming Manual page 379

Battery-free Operation
CS1-H, CJ1-H, CJ1M, or CS1D CPU Units
CJ1 and CJ1 CPU Units
Procedure
CS1-H, CJ1-H, CJ1M, or CS1D CPU Units
Area words allocated
Battery-free operation is possible for CS1-H, CJ1-H, CJ1M, or CS1D CPU
Units with normal operation. The user program and parameter data are auto-
matically backed up to flash memory in the CPU Unit and are automatically
restored from flash memory at startup. In this case, the I/O memory will not be
maintained and the DM and EM Areas must be initialized from the user pro-
gram.
Battery-free operation is also possible for the CS1-H, CJ1-H, CJ1M, or CS1D
CPU Units by automatically transferring data from a Memory Card at startup,
just as it is for the CS1 CPU Units. (With a Memory Card, the DM and EM
Area data can be included.)
Battery-free operation is possible for the CS1 and CJ1 CPU Units by automat-
ically transferring data from a Memory Card at startup. In this case, the I/O
memory will not be maintained. (With a Memory Card, the DM and EM Area
data can be included.)
The following flowcharts show the procedures for the two types of CPU Unit.
Power ON
Operation with a Battery
Maintain
Yes
previous I/O
data at
startup?
No
Battery-free Operation
No
Initialize I/O
memory before
program
execution?
Yes
Yes, initialize I/O memory
from the program.
Initialize I/O
memory from the
program?
No
Initialize only DM
to CPU Bus Units
and Inner Boards
(D20000 to
D32767)?
No
Initialize all of the DM and EM Areas
starting from D00000.
.
Other
Use normal operation. No
Memory Card is required.
CIO/WR/TIM
PLC Setup: Disable detection a
Required data?
CNT/HR/DM/EM
low battery voltage and set I/O
Memory Hold Bit status to be
maintained at when power is
turned ON.
CNT/HR/DM/EM
Use normal operation. No
Memory Card is required.
PLC Setup: Enable detection a
low battery voltage.
Use normal operation. No Memory
Card is required. User program and
parameter data backed up in flash
memory.
PLC Setup: Disable detection a low
battery voltage.
Automatically transfer data from a
Memory Card at startup.
Required files: AUTOEXEC.OBJ,
AUTOEXEC.STD, and
AUTOEXEC.IOM
PLC Setup: Disable detection a low
battery voltage.
Automatically transfer data from a
Memory Card at startup.
Required files: AUTOEXEC.OBJ,
AUTOEXEC.STD, AUTOEXEC.IOM,
etc.
PLC Setup: Disable detection a low
battery voltage.
Battery-free operation not necessary.
Section 6-10
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