Omron CJ1M-CPU series User Manual (English)

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CJ1-H and CJ1M CPU Unit Features Section 1-3

Delayed Power OFF

Processing for Specified

Program Areas

The DI and EI instructions can be used to disable interrupts during specific

portions of the program, for example, to prevent the power OFF interrupt from

being executed until a specific instruction has been executed.

1-3-4 Battery-free Operation with Flash Memory

Any user program or parameter area data transferred to the CPU Unit is auto-

matically backed up in flash memory in the CPU Unit to enable battery-free

operation without using a Memory Card.

Note Refer to information on flash memory in the CS/CJ Series Programming Man-

ual (W394) for precautions on this function.

1-3-5 Better Compatibility with Other SYSMAC PLCs

C200HE/HG/HX PLCs The AREA RANGE COMPARE (ZCP) and DOUBLE AREA RANGE COM-

PARE (ZCPL) instructions are supported in the CJ1-H CPU Units to provide

better compatibility with the C200HE/HG/HX PLCs.

CVM1/CV-series PLCs The CONVERT ADDRESS FROM CV instruction allows real I/O memory

addresses for the CVM1/CV-series PLCs to be converted to addresses for the

CJ-series PLCs, enabling programs with CVM1/CV-series addresses to be

quickly converted for use with a CJ-series CPU Unit.

1-3-6 CJ1M CPU Unit Features

Built-in I/O

The CJ1M CPU Units are high-speed, advanced, micro-sized PLCs equipped

with built-in I/O. The built-in I/O have the following features.

General-purpose I/O

■ Immediate Refreshing

The CPU Unit's built-in inputs and outputs can be used as general-purpose

inputs and outputs. In particular, immediate I/O refreshing can be performed

on the I/O in the middle of a PLC cycle when a relevant instruction is exe-

cuted.

■ Stabilizing Input Filter Function

The input time constant for the CPU Unit's 10 built-in inputs can be set to 0 ms

(no filter), 0.5 ms, 1 ms, 2 ms, 4 ms, 8 ms, 16 ms, or 32 ms. Chattering and

the effects of external noise can be reduced by increasing the input time con-

stant.

Interrupt Inputs

■ High-speed Interrupt Input Processing

The CPU Unit's 4 built-in inputs can be used for high-speed processing as

regular interrupt inputs in direct mode or interrupt inputs in counter mode. An

interrupt task can be started at the interrupt input's rising or falling edge (up or

down differentiation.) In counter mode, the interrupt task can be started when

the input count reaches the set value (up-differentiated or down-differentiated

transitions.)

High-speed Counters

■ High-speed Counter Function

A rotary encoder can be connected to a built-in input to accept high-speed

counter inputs.

Other manuals for Omron CJ1M-CPU series

Programming Manual383 pages

Replacement Guide24 pages

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Omron CJ1M-CPU series Specifications

General

Series	CJ1M
Program Memory	Flash Memory
Power Supply Voltage	24V DC
Operating Temperature	0 to 55°C
Type	Programmable Controller
CPU Type	CPU11, CPU12, CPU13, CPU21, CPU22, CPU23
Data Memory	SRAM
Data Memory Capacity	32K words (CJ1M-CPU11/12/13), 64K words (CJ1M-CPU21/22/23)
Instruction Execution Time (Basic Instructions)	0.1 μs (LD instruction)
Instruction Set	Basic instructions, advanced instructions
Programming Language	Ladder Diagram, Structured Text, Function Block Diagram
Communication Ports	RS-232C
Expansion Slots	Up to 3
Mounting	DIN rail mounting
Storage Temperature	-25 to 70°C
Dimensions	90 x 90 x 70 mm
Weight	Approx. 200g (0.44 lb)
Number of Instructions	Over 400 instructions