Omron CJ1G/H-CPU series Operation Manual page 42

CJ-series Features
I/O Memory Files in CSV
and Text Format
File Operations (Format,
Delete, etc.) from Ladder
Programs
Program Replacement
During Operation
Easy Backups
Specialized Instructions Simplify Programming
Text String Instructions
Loop Instructions
Index Registers
It is now possible to save production results and other data (hexadecimal)
from the CPU Unit I/O memory in a Memory Card in CSV or text format. The
data can then be read and edited using personal computer spreadsheet soft-
ware by means of a Memory Card Adapter.
I/O memory data stored
in CSV or text format
FWRIT
Via Memory Card Adapter
Memory Card
It is possible to format files, delete, copy, change file names, create new direc-
tories, and perform similar operations on a Memory Card from the ladder pro-
gram during PLC operation.
It is now possible to replace the entire user program in the CPU Unit from the
Memory Card during operation. In this way, it is possible to switch PLC opera-
tion without stopping the PLC.
It is now possible to back up all data (user programs, parameters, and I/O
memory) to the Memory Card by pressing the Memory Card power supply
switch. In this way, if a malfunction arises, it is possible to back up all data in
the CPU Unit at the time without using a Programming Device.
The text string instructions allow text processing to be performed easily from
the ladder program. These instructions simplify the processing required when
creating messages for transmission or processing messages received from
external devices with the protocol macro function.
The FOR(512), NEXT(513), and BREAK(514) instructions provide a very
powerful programming tool that takes up little program capacity.
Sixteen Index Registers are provided for use as pointers in instructions. An
Index Register can be used to indirectly address any word in I/O memory. The
CJ-series PLCs also support the auto-increment, auto-decrement, and offset
functions.
The Index Registers can be a powerful tool for repetitive processing (loops)
when combined with the auto-increment, auto-decrement, and offset func-
tions. Index Registers can also be useful for table processing operations such
as changing the order of characters in text strings.
.OBJ
PLC operation
Replacement
Processing of text string
data
External device with
standard serial port
Section 1-2
Spread sheet software
9