Omron SYSMAC CS/CJ Series Programming Manual page 242

Manipulating Files
Verifying Backup Operations with Indicators
Backup operation
Backing up data from the
CPU Unit to the Memory
Card
Restoring data from the
Memory Card to the CPU
Unit
The status of the Memory Card Power (MCPWR) indicator shows whether a
simple backup operation has been completed normally or not.
Normal completion
(See note 1.)
MCPWR status
Lit → Remains lit while the
Memory Card Power Switch
is pressed. → Flashes once.
→ Lit while writing. → OFF
after data is written.
Lit when power is turned ON.
→ Flashes once. → Lit while
reading. → OFF after data is
read.
MCPWR Indicator
(This example shows a
CS-series CPU Unit.)
Error occurred
MCPWR status
Lit → Remains lit while the
Memory Card Power Switch
is pressed. → Remains
flashing. → Lights when the
Memory Card Power Switch
is pressed.
Lit when power is turned ON.
→ Flashes five times. →
Goes OFF.
Lit when power is turned ON.
→ Flashes once. → Lit while
reading. → Flashes three
times. → OFF after data is
read.
Section 5-2
Error
No files will be created with
the following errors:
Insufficient Memory Card
capacity (See note 2.)
Memory error in CPU Unit
I/O bus error (when writing
data to a Unit or Board, CS1-
H or CJ1-H CPU Units only)
Data won't be read with the
following errors:
Program in Memory Card
exceeds CPU Unit capacity
Required backup files do not
exist in Memory Card.
Program can't be written
because it is write-protected
(Pin 1 of the DIP switch is
ON.)
Caution: Data will be read
with the following error.
EM files and CPU Unit EM
banks do not match (non-
consecutive bank numbers
or max. bank number mis-
match).
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