Omron CJ2 CPU UNIT SOFTWARE User Manual

8-19
8 I/O Allocations and Unit Settings
CJ2 CPU Unit Software User’s Manual
8-1 I/O Allocations
8
8-1-4 I/O Table Errors and Precautions
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
*1
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.
Precautions when Using a Memory Card
Office
Remote site
Create program files for automatic transfer
at startup (AUTOEXEC.OBJ) and
parameter files for automatic transfer
at startup (AUTOEXEC.STD).
Units mounted.
I/O is allocated according to settings in mounted Units.
Automatic I/O Allocation at Startup
Parameter file for automatic
transfer at startup
(AUTOEXEC.STD)
Records allocation method in
parameter file for automatic
transfer at startup
(AUTOEXEC.STD)
*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.
Automatic Allocation
CJ2 CPU Unit
Units not mounted.
Parameter file for automatic
transfer at startup
(AUTOEXEC.STD)
Program file for automatic
transfer at startup
(AUTOEXEC.OBJ)
Memory Card
CX-Programmer
Match
*1
Program file for automatic
transfer at startup
(AUTOEXEC.OBJ)
CJ2 CPU Unit

Omron CJ2 CPU UNIT SOFTWARE Specifications

General

Brand	Omron
Model	CJ2 CPU UNIT SOFTWARE
Category	Software
Language	English