Omron CJ2 manual Transfer Method2.4, Automatic User Memory Recovery

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High-speed System I/O Throughput NEW

Improved basic performance enables fl exible machine control.

Ample Instruction Execution Performance for Machine Control

The CJ2 Series fully responds to customer requests for improvement and increased information.

»System Overhead

Common processing 200 µs Interrupt response: 30 µs

»Basic Instructions

LD instruction execution: 0.016 µs

OUT instruction execution: 0.016 µs

»Floating-point Math SIN calculation: 0.59 µs

Floating-point decimal addition and subtraction: 0.24 µs

Faster I/O Refreshing Using the Burst

Transfer Method2.4

Times

I/O refreshing between an EtherNet/IP Unit and the CPU Unit is now performed at high speed using the even faster and higher-capacity data links for EtherNet/IP. This method is standard for the CJ2 CPU Units. I/O refreshing is now performed at up to 2.4 times the speed of previous Communications Units.

I/O refresh speed

CJ2

330µs 2.4X

(for 1,000 words)

CJ1

800 µs

 

Burst transfer

High-speed, high-capacity

EtherNet/IP

»I/O Refreshing

16-point Basic I/O Unit: 1.4 µs

8-point Analog Input Unit: 50 µs

Faster Immediate I/O Refreshing

20

Times

 

Immediate refreshing of basic I/O is also faster. Real-time inputs and outputs while instructions are being executed are up to 20 times faster than before.

(Example: !LD instruction speed improved from 20 µs to 1 µs)

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

Air cylinder

Fiber Sensor

 

 

 

 

 

 

 

 

 

CJ2 CPU

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

Sensor status is read

Output immediately

 

E3X-DA

 

just prior to instruction

after instruction is

 

 

execution.

executed

 

Automatic User Memory Recovery

Finer memory production processes have been accompanied by problems such as bit corruption caused by cosmic rays. With the CJ2 CPU Units, corruption in the user program is detected and the program recovered in real time before program execution. This reduces equipment down time by minimizing the number of times that operation is stopped due to memory errors.

Cosmic rays

User program

Operation is stopped due

to memory error.

data is corrupted

 

Previously

Cosmic rays

Data is automatically

(Thermal neutrons)

 

 

 

 

User program

restored and normal

 

 

 

 

data is corrupted

operation continues.

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

CJ2

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Contents
Programmable Automation Controllers CJ2SERIESMulti-domain functionality Large Memory Capacity And, All CJ2 Models Have more Capacity than CJ1 Models High-capacity CJ2H-CPU68-EIP Is Now AvailableTransfer Method2.4 Automatic User Memory RecoveryCreate a Seamless Data Flow in a Single Network System Networks Are More OpenData Links EtherNet TechnologyNo Need for Memory Map Control Programmable Terminal Host application NS Series What is Tag Access?Easy Connection by USB Connecting Support Software is Now Easier and SaferEasy Connection by EtherNet/IP By PAC Name VerificationStress-free Online Debugging Easier On-site DebuggingContinuous Data Tracing Trigger ConditionsHighly Readable Programming BCD and Binary Timer Instructions can be used TogetherBit Addresses can be used in the DM Area and EM Area Address Offsets can be SpecifiedUp to 128 Cyclic Tasks Are Supported.4 Variable SubscriptCJ-series CPU Racks System ConfigurationRequired Units Types of UnitsPower Supply Unit One Unit Expansion Interface Unit Maximum Number of Configuration Units That Can Be MountedCJ-series Expansion Racks Right of the CPU Unit. See noteEtherNet/IP Port External InterfaceSerial Port CJ1W-BAT01 General SpecificationsEM3 Performance SpecificationsUTF-8 Timer CounterFINS/UDP UcmmFINS/TCP CSMA/CDInternational Standards CJ2 CPU Units Power Supply UnitsOrdering Information Current Product name Specifications Connecting CablesProduct name Specifications Model Standards CJ-series I/O Interface Unit Mounted on Expansion RackEtherNet/IP Port Support SoftwarePeripheral USB Port Input Units Product Words Model Specifications No.Name External AllocatedUnits Switching CapacityName Input current MaximumB7A Interface Units Interrupt Input UnitsHigh-speed Input Units Isolated-type Thermocouple Input Units Process I/O UnitsIsolated-type Units with Universal Inputs Isolated-type Resistance Thermometer Input Units Analog I/O UnitsIsolated-type DC Input Units Analog Input UnitsAnalog I/O Units Analog Output UnitsPosition Control Units Temperature Control UnitsHigh-speed Counter Unit MECHATROLINK-II-compatible Motion Control Units MECHATROLINK-II-compatible Position Control UnitsSerial Communications Units EtherNet/IP UnitController Link Units EtherNet UnitFL-net Unit DeviceNet UnitCompoBus/S Master Unit CompoNet Master UnitID Sensor Units Sysmac SPU High-speed Data Storage UnitCJ2H CPU Unit Dimensions Unit mmExample Calculating Total Current and Power Consumption Checking Current Consumption and Power ConsumptionOmron Electronics LLC the Americas Headquarters