Omron CJ - PROGRAMMING MANUAL 12-2009 Programming Manual page 287

Manipulating Files
Backup operation
Comparing data between the
CPU Unit and the Memory
Card
Common to all three backup
operations.
Normal completion
(See note 1.)
MCPWR status
Lit → Remains lit while the
Memory Card Power Switch
is pressed. → Flashes once.
→ Lit while comparing. →
OFF after data is compared.
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Note 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. When data is written for a simple backup operation, errors for insufficient
Memory Card capacity can be checked in A397 (Simple Backup Write Ca-
pacity). If A397 contains any value except 0000 Hex after the write opera-
tion has been executed, the value will indicate the capacity that is required
in the Memory Card in Kbytes.
3. The backup files for Units and Boards are also compared.
Note The CS1G/H-CPU@@(-V1) and CJ1@-CPU@@ CPU Units do not
support the Unit/Board backup function.
Error occurred
MCPWR status
Lit → Remains lit while the
Memory Card Power Switch
is pressed. → Remains
flashing.
Reading:
Flashes five times. → Goes
OFF.
Writing or comparing:
Remains flashing.
Section 5-2
Error
The following comparison
errors can occur (See note
3.):
Memory Card and CPU Unit
data do not match.
Required backup files do not
exist in Memory Card.
EM files and CPU Unit EM
banks do not match (non-
consecutive bank numbers
or max. bank number mis-
match).
Memory error in CPU Unit
I/O bus error (when compar-
ing data to a Unit or Board,
CS1-H, CS1D, or CJ1-H
CPU Units only)
Memory Card access error
(format error or read/write
error)
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