Omron CJ2 User Manual page 225

Normal completion*
Backup operation
Restoring data from
MCPWR
the Memory Card to
the CPU Unit
MCPWR
MCPWR
MCPWR
Comparing data
MCPWR
between the CPU Unit
and the Memory Card
Remains lit while the Memory
Card Power Switch is pressed.
MCPWR
MCPWR
MCPWR
*1 When the backup operation is completed normally, power to the Memory Card will go OFF when the MCPWR indicator
goes OFF. If the Memory Card will be used again, press the Memory Card Power Switch to supply power and execute the
desired operation.
*2 The backup files for Units and Boards are also compared.
CJ2 CPU Unit Hardware User's Manual
1
MCPWR status
Lit when power is
MCPWR
turned ON.
Lit when power is turned
ON.
Flashes once.
MCPWR
Flashes five times.
Lit while reading.
MCPWR
OFF after data is
read.
MCPWR
Lit when power is
turned ON.
MCPWR
Flashes once.
MCPWR
Remains lit.
MCPWR
Same as for normal
completion.
Special I/O or CPU
Bus Unit ERR indicator
H8
7-segment LED indicator
Displayed as "H8"
MCPWR
Same as for normal
completion.
INEE Board
READY
indicator
MCPWR
Lit
Remains lit while
the Memory Card
Power Switch is
pressed.
Flashes once.
MCPWR
Remains flashing.
Lit while comparing.
OFF after data
is compared.
Error occurred
MCPWR status
The data was not restored due to one of the following
causes.
• 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.)
• The EM file was not complete, i.e., a portion was missing.
• There are fewer CPU Unit EM banks than backup EM
files.
Goes OFF.
The I/O tables are not correct (e.g., the same unit number
was set twice).
• A Unit was added to the configuration since the data was
backed up.
• The unit number settings for Special I/O Units or CPU
Bus Units are not correct.
A Unit was added to the configuration since the data was
backed up.
Flashing
The following comparison errors can occur:
Lit
• Memory error in CPU Unit
• Incorrect I/O tables (e.g., the same unit number set twice)
• Comparison results (of backup files on Memory Card and
data in PLC) do not match.
• Required backup files do not exist in Memory Card.
• I/O bus error
8 Backup Operations
Error
*2
*2
8-11
8