CS1D-BI082D Omron, CS1D-BI082D Datasheet - Page 98
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CS1D-BI082D
Manufacturer Part Number
CS1D-BI082D
Description
CS1D Dual Exp Rack
Manufacturer
Omron
Datasheet
1.CS1D-SP002.pdf
(638 pages)
Specifications of CS1D-BI082D
Lead Free Status / Rohs Status
Lead free / RoHS Compliant
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2-5-1
Using Memory Cards
Operation in a Duplex CPU
System
Memory Card Functions
File Memory
Writing to Memory
Card using the
FWRIT instruction
Reading from Mem-
ory Card using the
FREAD instruction
Automatic transfer
when power is
turned ON
Replacement of the
Entire Program Dur-
ing Operation
Simple backup
Function
File Memory Functions in Duplex CPU Systems
Accessed.
Memory Card location
CPU Unit
Installed
in active
Only the Memory Card in the active CPU Unit is accessed, whereas EM file
memory is accessed for both the active and standby CPU Units.
Memory Card functions can be executed in duplex only when the doing so is
enabled in the PLC Setup. In Duplex Mode, the same data that is written to
the Memory Card mounted in the active CPU Unit will also be written to the
Memory Card in the standby CPU Unit. No processing, however, is executed
during duplex initialization to match the data on the Memory Cards mounted
in the active and standby CPU Units. Therefore, before enabling duplex oper-
ation for Memory Cards, make sure that the contents are the same for both of
the Memory Cards.
Data read from the Memory Card mounted in the active CPU Unit is used by
both the active and standby CPU Units, so this ensures that the data for the
two CPU Units will match.
The following table shows the operations of the various Memory Card-related
functions.
Accessed.
(Same
data writ-
ten as for
active CPU
Unit.)
Not
accessed.
in standby
CPU Unit
Installed
Data is written to the Mem-
ory Cards mounted in both
CPU Units.
Data read from the Memory
Card in the active CPU Unit
is used by both CPU Units.
After the automatic transfer
at startup, duplex initializa-
tion is executed between the
two CPU Units, and the user
program, parameters, and
I/O memory are matched.
Simultaneously with pro-
gram replacement during
operation, duplex operation
is initialized between the two
CPU Units, and the user pro-
grams are matched.
Duplex operation is not ini-
tialized between the CPU
Units after reading to the
CPU Units.
processing method
Data unification
When referencing file memory-related
status, use the status for the active CPU
Unit (word A343).
There is no need to mount a Memory
Card or to set the DIP switch at the
standby CPU Unit.
After data is read from the Memory Card
by the simple backup operation, the CPU
Unit will be in PROGRAM mode. (CS-
series specifications)
To begin the operation:
1.
2.
Note If pin 7 on the active CPU Unit is
Turn OFF the power and set DIP
switch pins 7 and 8 on the CPU Units.
Then turn the power back ON.
Press the Initial Switch on the Duplex
Unit.
turned ON, a duplex verification
error will be generated.
Notes
Section 2-5
63
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