Omron CJ2 - 02-2010 User Manual page 289

Precautions when Using a Memory Card
The I/O allocation method used to create the CPU Unit's I/O table (automatic I/O allocation at startup or
user-set I/O allocation) is recorded in the parameter file for automatic transfers at startup
(AUTOEXEC.STD). When automatic transfer at startup is executed from the Memory Card, the
recorded method is automatically detected and used to allocate I/O automatically at startup or verify the
I/O table.
The descriptions below explain the two different methods used to create the I/O tables in the CPU Unit
by creating a parameter file for automatic transfer at power startup (AUTOEXEC.STD).
• Automatic Allocation
The I/O tables in the parameter file for automatic transfer at startup in the Memory Card are disabled
and I/O is allocated using automatic I/O allocation at startup based on the Units actually connected in
the PLC.
*1 With automatic I/O allocation at startup, I/O tables are not created in advance and I/O allocations are automat-
ically made to the Basic I/O Units that are actually connected each time the power supply is turned ON.
• Manual Allocation
The I/O tables in the parameter file for automatic transfer at startup in the Memory Card are enabled,
and the CPU Unit verifies the I/O tables against the Units actually connected in the PLC.
Office
Create program files for automatic transfer
at startup (AUTOEXEC.OBJ) and
parameter files for automatic transfer
at startup (AUTOEXEC.STD).
CX-Programmer
Program file for automatic
transfer at startup
(AUTOEXEC.OBJ)
Parameter file for automatic
transfer at startup
Units not mounted.
(AUTOEXEC.STD)
CJ2 CPU Unit Software User's Manual
*1
Remote site
Units mounted.
Match
Memory Card
CJ2 CPU Unit
Automatic Allocation
*1
The parameter file for automatic transfer at startup
(AUTOEXEC.STD) is present, but I/O is allocated by the I/O
allocations in the mounted Units.
8 I/O Allocations and Unit Settings
I/O is allocated according to settings in mounted Units.
CJ2 CPU Unit
Automatic I/O Allocation at Startup
Program file for automatic
transfer at startup
(AUTOEXEC.OBJ)
*1
Parameter file for automatic
transfer at startup
(AUTOEXEC.STD)
Records allocation method in
parameter file for automatic
transfer at startup
(AUTOEXEC.STD)
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