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General| Power Supply | 24 VDC |
|---|---|
| Operating Temperature | 0 to 55°C |
| Model | CJ2 |
| Data Memory Capacity | 128 KB |
| Number of I/O Points | Up to 2560 points |
| Instruction Execution Time (Basic Instructions) | 0.04 μs |
| Instruction Execution Time (Application Instructions) | Varies by instruction |
| Number of Instructions | Over 400 |
| Communication Ports | Ethernet, Serial (RS-232C/RS-422/485) |
| Control Method | Stored program method |
| I/O Control Method | Cyclic scan |
| Programming Language | Ladder diagram, Structured text, Function block diagram |
| Built-in I/O Points | None (requires expansion) |
| Weight | Approx. 200g |
Details the target personnel for this manual, who should have knowledge of electrical systems.
Lists the CJ-series CJ2 CPU Units that are covered by this manual.
Details the structure and content of the Hardware User's Manual, outlining each section.
Outlines the structure and content of the Software User's Manual, detailing sections on memory, operation, and programming.
Explains the standard page layout used throughout the manual, including headings and page tabs.
Classifies special information icons used in the manual: Precautions for Safe Use, Correct Use, and Additional Information.
Provides a general overview of the CJ2 CPU Units and their features.
Outlines the general steps required for setting up, wiring, and operating a CJ2 PLC system.
Details the technical specifications, including general, performance, and functional aspects of the CPU Units.
Describes the fundamental system configuration, including CPU Racks and Expansion Racks.
Explains system configurations involving serial communications and communications networks.
Details the components and functions of the CJ2 CPU Units, including sections and indicators.
Covers the models, specifications, and operating procedures for using memory cards with the CPU Unit.
Provides models, specifications, components, and selection criteria for power supply units.
Describes the part names, functions, and connection methods for basic I/O units.
Introduces the CX-One FA Integrated Tool Package and its applications for PLC programming and debugging.
Explains how to connect the PLC to a personal computer via USB, RS-232C, or Ethernet.
Details essential safety circuits like emergency stop and interlock circuits for safe operation.
Covers installation precautions, control panel mounting, DIN track installation, and connecting PLC components.
Provides detailed instructions for wiring power supply units, basic I/O units, and Ethernet connections.
Describes essential environmental considerations for control panel installation, including temperature, humidity, and electrical factors.
Details common CPU unit errors, checking status via indicators and CX-Programmer, and handling procedures.
Provides guidance on checking and resolving errors related to the built-in EtherNet/IP port using the seven-segment display.
Lists error causes and remedies for input units, output units, special I/O units, and CX-Programmer connection issues.
Details periodic inspection points for PLC components and tools required for maintenance.
Explains the purpose of the battery, its service life, and the procedure for replacement.
Describes the principle of replacement notification for power supply units and their operation when turning power ON or OFF.
Outlines two methods for backing up PLC data: using a computer or front-panel switches with a memory card.
Details the PLC Backup Tool for backing up, comparing, and restoring data, including applicable units and data types.
Explains the simple backup operation using DIP switch settings and memory card power switch, with procedures for backing up, restoring, and comparing data.
Provides specifications for basic I/O units, including input, output, and mixed I/O types.
Details the physical dimensions of CJ2 CPU Units, Power Supply Units, Basic I/O Units, and option boards.
Lists and explains fatal and non-fatal errors that can occur in the CPU Unit, including error codes and probable causes.
Provides information on serial port interface types, connection examples, and recommended cables for RS-232C and RS-422A/485.
Describes the procedure for installing the USB driver for computer connection to the PLC.
Explains load short-circuit protection and line disconnection detection mechanisms for specific Basic I/O Units.
Details methods for reducing noise generated by relay output switching in CJ-series PLCs.
Lists functions supported by different unit versions of CJ2 CPU Units and CX-Programmer compatibility.
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