Omron CJ1 Series PLC-CPU Unit CJ1M-CPU1- A&S Automation Co., Ltd

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The entry-level modular PLC with a big potential

The smallest members of the CJ1 family
are fully upward-compatible to the CJ1G/H and CS1 series regarding instruction
set, communication commands and memory organisation. Now even small machines
can be built in a consistently modular way, reducing the cost to enhance,
expand or customise machines without a complete redesign of the control system.

Entry-level modular PLC, compatible
with CJ1G/H-series

CPUs with built-in pulse I/O

for fast and easy motion control, or with Ethernet interface for easy

integration.

IEC 61131-3 Structured Text

programming, extensive function block libraries

Transparent communication

routing through different networks

CompactFlash memory card slot

for data storage and program exchange.

Item

Specifications

Control method

Stored program

I/O control method

Cyclic scan and immediate processing are both possible.

Programming

LD (Ladder), SFC (Sequential Function Chart), ST (Structured Text), Mnemonic

CPU processing mode

CJ1M CPU Units: Normal Mode or Peripheral Servicing Priority Mode

Instruction length

1 to 7 steps per instruction

Ladder instructions

Approx. 400 (3-digit function codes)

Execution time

CJ1M CPU Units (CPU12/13/22/23):

Basic instructions: 0.10 s min.

Special instructions: 0.15 s min.

CJ1M CPU Units (CPU11/21):

Basic instructions: 0.10 s min.

Special instructions: 0.15 s min.

Overhead time

CJ1M CPU Units (CPU12/13/22/23): 0.5 ms min.

CJ1M CPU Units (CPU11/21): 0.7 ms min.

Unit connection method

No Backplane: Units connected directly to each other.

Mounting method

DIN Track (screw mounting not possible)

Maximum number of

connectable Units

CJ1M CPU Units:

Total of 20 Units in the System, including 10 Units on CPU Rack and 10 Units on one Expansion Rack.

Maximum number of

Expansion Racks

CJ1M CPU Units (CPU 13/23 only):

1 max. (An I/O Control Unit is required on the CPU Rack and an I/O Interface Unit is required on the Expansion

Rack.)

CJ1M CPU Units (CPU11/12/21/22):

Expansion is not possible.

Number of tasks

288 (cyclic tasks: 32, interrupt tasks: 256)

With CJ1M CPU Units, interrupt tasks can be defined as cyclic tasks called "extra cyclic tasks." Including

these, up to 288 cyclic tasks can be used.

Note 1.

Cyclic tasks are executed each cycle and are controlled with TKON(820) and TKOF(821) instructions.

Note 2.

The following 4 types of interrupt tasks are supported.

Power OFF interrupt tasks: 1 max.

Scheduled interrupt tasks: 2 max.

I/O interrupt tasks: 32 max.

External interrupt tasks: 256 max.

Interrupt types

Scheduled Interrupts:

Interrupts generated at a time scheduled by the CPU Unit's built-in timer. (See note. 1)

I/O Interrupts: Interrupts from Interrupt Input Units.

Power OFF Interrupts (See note 2.): Interrupts executed when the CPU Unit's power is turned OFF.

External I/O Interrupts: Interrupts from the Special I/O Units or CPU Bus Units.

Note 1.

CJ1M CPU Units: Scheduled interrupt time interval is 0.5 ms to 999.9 ms (in increments of 0.1 ms), 1 ms to

9,999 ms (in increments of 1 ms), or 10 ms to 99,990 ms (in increments of 10 ms)

Note 2.

Not supported when the CJ1W-PD022 Power Supply Unit is mounted.

Function blocks (CPU

Unit with unit version

3.0 or later only)

Languages in function block definitions: ladder programming, structured text

CIO

(Core

I/O)

Area

I/O Area

1,280: CIO 000000 to CIO 007915 (80 words from CIO 0000 to CIO 0079)

The setting of the first word can be changed from the default (CIO 0000) so that CIO 0000

to CIO 0999 can be used.

I/O bits are allocated to Basic I/O Units.

The CIO Area

can be used as

work bits if the

bits are not

used as shown

here.

Link Area

3,200 (200 words): CIO 10000 to CIO 119915 (words CIO 1000 to CIO 1199)

Link bits are used for data links and are allocated to Units in Controller Link Systems.

CPU Bus Unit

Area

6,400 (400 words): CIO 150000 to CIO 189915 (words CIO 1500 to CIO 1899)

CPU Bus Unit bits store the operating status of CPU Bus Units.

(25 words per Unit, 16 Units max.)

Special I/O Unit

Area

15,360 (960 words): CIO 200000 to CIO 295915 (words CIO 2000 to CIO 2959)

Special I/O Unit bits are allocated to Special I/O Units. (10 words per Unit,&n

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Item	Specifications
Control method	Stored program
I/O control method	Cyclic scan and immediate processing are both possible.
Programming	LD (Ladder), SFC (Sequential Function Chart), ST (Structured Text), Mnemonic
CPU processing mode	CJ1M CPU Units: Normal Mode or Peripheral Servicing Priority Mode
Instruction length	1 to 7 steps per instruction
Ladder instructions	Approx. 400 (3-digit function codes)
Execution time	CJ1M CPU Units (CPU12/13/22/23): Basic instructions: 0.10 s min. Special instructions: 0.15 s min. CJ1M CPU Units (CPU11/21): Basic instructions: 0.10 s min. Special instructions: 0.15 s min.
Overhead time	CJ1M CPU Units (CPU12/13/22/23): 0.5 ms min. CJ1M CPU Units (CPU11/21): 0.7 ms min.
Unit connection method	No Backplane: Units connected directly to each other.
Mounting method	DIN Track (screw mounting not possible)
Maximum number of connectable Units	CJ1M CPU Units: Total of 20 Units in the System, including 10 Units on CPU Rack and 10 Units on one Expansion Rack.
Maximum number of Expansion Racks	CJ1M CPU Units (CPU 13/23 only): 1 max. (An I/O Control Unit is required on the CPU Rack and an I/O Interface Unit is required on the Expansion Rack.) CJ1M CPU Units (CPU11/12/21/22): Expansion is not possible.
Number of tasks	288 (cyclic tasks: 32, interrupt tasks: 256) With CJ1M CPU Units, interrupt tasks can be defined as cyclic tasks called "extra cyclic tasks." Including these, up to 288 cyclic tasks can be used. Note 1. Cyclic tasks are executed each cycle and are controlled with TKON(820) and TKOF(821) instructions. Note 2. The following 4 types of interrupt tasks are supported. Power OFF interrupt tasks: 1 max. Scheduled interrupt tasks: 2 max. I/O interrupt tasks: 32 max. External interrupt tasks: 256 max.
Interrupt types	Scheduled Interrupts: Interrupts generated at a time scheduled by the CPU Unit's built-in timer. (See note. 1) I/O Interrupts: Interrupts from Interrupt Input Units. Power OFF Interrupts (See note 2.): Interrupts executed when the CPU Unit's power is turned OFF. External I/O Interrupts: Interrupts from the Special I/O Units or CPU Bus Units. Note 1. CJ1M CPU Units: Scheduled interrupt time interval is 0.5 ms to 999.9 ms (in increments of 0.1 ms), 1 ms to 9,999 ms (in increments of 1 ms), or 10 ms to 99,990 ms (in increments of 10 ms) Note 2. Not supported when the CJ1W-PD022 Power Supply Unit is mounted.
Function blocks (CPU Unit with unit version 3.0 or later only)	Languages in function block definitions: ladder programming, structured text
CIO (Core I/O) Area	I/O Area 1,280: CIO 000000 to CIO 007915 (80 words from CIO 0000 to CIO 0079) The setting of the first word can be changed from the default (CIO 0000) so that CIO 0000 to CIO 0999 can be used. I/O bits are allocated to Basic I/O Units. The CIO Area can be used as work bits if the bits are not used as shown here.
Link Area	3,200 (200 words): CIO 10000 to CIO 119915 (words CIO 1000 to CIO 1199) Link bits are used for data links and are allocated to Units in Controller Link Systems.
CPU Bus Unit Area	6,400 (400 words): CIO 150000 to CIO 189915 (words CIO 1500 to CIO 1899) CPU Bus Unit bits store the operating status of CPU Bus Units. (25 words per Unit, 16 Units max.)
Special I/O Unit Area	15,360 (960 words): CIO 200000 to CIO 295915 (words CIO 2000 to CIO 2959) Special I/O Unit bits are allocated to Special I/O Units. (10 words per Unit,&n

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