Using File Memory

 

 

 

 

Section 4-7

File Names Handled by CPU Unit

 

 

 

 

 

The files described in the following table can be read or written by the CPU

 

 

Unit.

 

 

 

 

 

 

 

 

 

File type

File name

 

Extension

Contents

Description

 

 

 

 

 

 

 

Data file

 

********

 

.IOM

Specified ranges of I/

• Contains word (16-bit) data from a starting

 

 

 

 

 

O Memory

word through an end word in one memory

 

 

 

 

 

 

area.

 

 

 

 

 

 

• The following areas can be used: CIO, HR,

 

 

 

 

 

 

WR, AR, DM, and EM.

 

 

 

 

 

 

Program file

********

 

.OBJ

Complete user pro-

• Contains all the programs for cyclic tasks

 

 

 

 

 

gram

and interrupt tasks, as well as task infor-

 

 

 

 

 

 

mation for one CPU Unit.

 

 

 

 

 

 

Parameter area file

********

 

.STD

• PLC Setup

• Contains all of the parameter data for one

 

 

 

 

 

• Registered I/O

CPU Unit.

 

 

 

 

 

tables

• There is no need for the user to distinguish

 

 

 

 

 

• Routing tables

the various types of data contained in the

 

 

 

 

 

• CPU Bus Unit

file.

 

 

 

 

 

• The file can be automatically read to or

 

 

 

 

 

Setup and other

 

 

 

 

 

setup data

written from the CPU Unit simply by speci-

 

 

 

 

 

 

fying the extension (.STD)

Files

Data files

AUTOEXEC

 

.IOM

I/O Memory data for

• There does not necessarily need to be a

trans-

 

 

 

 

the specified number

data file in the Memory Card when the

ferred at

 

 

 

 

of words starting from

automatic file transfer function is used at

startup

 

 

 

 

D20000

startup.

 

 

 

 

 

 

• The AUTOEXEC.IOM file always contains

 

 

 

 

 

 

DM Area data starting at D20000.

 

 

 

 

 

 

• All data in the file will be transferred to

 

 

 

 

 

 

memory starting at D20000 at startup.

 

 

 

 

 

 

 

 

Program

AUTOEXEC

 

.OBJ

Complete user pro-

• There must be a program file in the Mem-

 

files

 

 

 

gram

ory Card when the automatic file transfer

 

 

 

 

 

 

function is used at startup.

 

 

 

 

 

 

• Contains all the programs for cyclic tasks

 

 

 

 

 

 

and interrupt tasks, as well as task infor-

 

 

 

 

 

 

mation for one CPU Unit.

 

 

 

 

 

 

 

 

Parameter

AUTOEXEC

 

.STD

• PLC Setup

• There must be a parameter file in the

 

area file

 

 

 

• Registered I/O

Memory Card when the automatic file

 

 

 

 

 

tables

transfer function is used at startup.

 

 

 

 

 

• Routing tables

• Contains all of the parameter data for one

 

 

 

 

 

• CPU Bus Unit

CPU Unit.

 

 

 

 

 

• There is no need for the user to distinguish

 

 

 

 

 

Setup and other

 

 

 

 

 

setup data

the various types of data contained in the

 

 

 

 

 

 

file.

 

 

 

 

 

 

• All parameters in the file will be automati-

 

 

 

 

 

 

cally transferred to specified locations in

 

 

 

 

 

 

memory at startup.

Note 1. Refer to information on file memory in the CS/CJ-series Programmable Controllers Operation Manual (W339).

2.All files transferred automatically at startup must have the name

AUTOEXEC.

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Omron CJ1W-ETN21 operation manual File Names Handled by CPU Unit, File type File name Extension Contents Description