Omron CJ1M Software: Selecting CX-One Edition for Programming

1. Overview: Programming the Omron CJ1M PLC

The Omron CJ1M is a compact modular PLC in the CJ-series family, supporting CPU types CJ1M-CPU11, CJ1M-CPU12, CJ1M-CPU13, CJ1M-CPU21, CJ1M-CPU22, CJ1M-CPU23, CJ1M-CPU11-ETN, and the Ethernet-equipped variants. Programming, configuration, and online maintenance of any CJ1M CPU require the CX-Programmer development environment, which is delivered as a component of the CX-One automation software suite. There is no other Omron tool that can build or upload an IEC 61131-3 / ladder project for CJ1M hardware.

Engineers frequently discover this constraint only after purchasing an incompatible software edition. This reference documents the licensing tiers, part numbers, hardware support matrix, and procurement workflow so that field service technicians, system integrators, and end users can select the correct CX-One license on the first purchase order.

2. CX-One Suite Architecture

CX-One is a single installer that bundles multiple Omron configuration tools under one common shell. Per the official product family description, CX-One "allows users to build, configure, and program a host of devices such as PLCs, HMIs, motion-control systems and networks." See the CX-One Automation Software Suite family page for the canonical product listing.

All components share the same license key. Activating CX-One once enables every bundled tool, including CX-Programmer. The single-installer approach means that a technician who installs CX-One already has CX-Programmer present at Start → Programs → Omron → CX-One → CX-Programmer.

3. Edition Comparison: AL01D vs LT01C

The most consequential decision when procuring CX-One for CJ1M work is choosing between the two commercial editions. The "AL" suffix denotes the full Automation License, while "LT" denotes the entry-level Lite license. The "D" and "C" infixes in the part numbers reflect the maintenance / version generation of the license; "D" is the current generation superseding "C".

4. CJ1M Hardware Compatibility Matrix

Within the full CX-One license, CX-Programmer's supported device tree spans every CJ-series CPU Omron has shipped. The matrix below covers the CJ1M variants most often encountered in the field.

All of the above CPU units are recognized by CX-Programmer once the full CX-One license is installed. The ETN variants expose the on-board EtherNet/IP port, which can be reached from CX-Programmer via FINS/UDP or FINS/TCP without any additional module configuration.

5. Part Numbers and Regional Variants

Omron publishes distinct catalog numbers per region to handle language, channel, and licensing agreements. The full CX-One license for CJ1M programming is sold under several SKU patterns. Always verify the part number quoted by your Omron distributor matches the regional format below.

Both part numbers carry the -V4 suffix denoting the bundled component generation. V4 corresponds to the CX-Programmer 9.x build line and includes support for newer CJ1M firmware revisions. Lower-generation SKUs (e.g. CXONE-AL01C-V4) may install but will not always recognize the latest CJ1M CPU revisions; check with your Omron representative before committing.

Each license is sold as a single-user seat. Multi-seat installations require one license per concurrent user, since CX-One enforces a USB dongle or soft-key activation check at startup of any of its components.

6. License Procurement and Pricing

Pricing fluctuates by region, distributor, and ongoing Omron promotional bundles. Field-experience reference points, not contractual figures:

• Full license (AL01D-V4): Typically in the $2,000–$2,800 USD range when sourced through authorized distributors. Promotional or volume agreements may lower the effective unit price.
• Lite license (LT01C-V4): Typically in the $600–$900 USD range. Suitable only for CP1 / CP1E / entry-level work and will not unlock CJ1M device support.

For short-duration service jobs, the cost of the full license can be amortized across multiple end customers. Many system integrators treat the full CX-One license as a baseline engineering tool and recover its cost via project billing.

7. Trial Version Workflow

Omron offers a 30-day trial of CX-One to qualified registrants. The trial install is the recommended pre-procurement validation step, especially when the end customer is paying for the service visit.

1. Navigate to the official Omron CX-One trial request page for your region. The UK distribution page is published at Omron UK CX-One trial request; equivalent pages exist on the European and US industrial sites.
2. Complete the registration form with company details. A download link and 30-day activation code are issued to the registered email address.
3. Run the installer as administrator on a Windows 10 / Windows 11 workstation. CX-One V4 requires a 64-bit OS.
4. Activate using the issued code. The trial exposes every component, including full CX-Programmer functionality with CJ1M device support.
5. Connect to the target CJ1M via USB, serial, or EtherNet/IP (depending on the CPU variant) and confirm upload / download / monitor cycles work.
6. When the 30-day window expires, the trial reverts to a view-only mode and prevents new project uploads. Replace with the purchased full license to restore full functionality.

8. CX-Programmer Feature Set for CJ1M

Once CX-One is installed and licensed, CX-Programmer becomes the primary tool for CJ1M work. The functions that matter most for service engineering are summarized below.

CX-Programmer supports both ladder and structured text for CJ1M. Symbol / variable names, I/O comments, and rung comments are stored inside the project file (.cxp) and uploaded into the CPU as part of the program transfer, which is invaluable for service technicians trying to understand a foreign program.

9. Project Migration and Backup Strategy

Service organizations should adopt a standard workflow for backing up CJ1M programs whenever they are uploaded. CX-One provides several mechanisms:

1. Native project archive: After uploading, save the project as .cxp (CX-Programmer project) and as .cxt (CX-Programmer tool / library archive). Store both in version-controlled directories.
2. Memory card dump: Insert a compatible compact flash card into the CJ1M and use PLC → Memory Card → Backup to write the entire program and parameter set to the card. The card can later be inserted into a replacement CPU to restore operation in minutes.
3. PDF / print archive: Use File → Print Preview followed by a PDF print driver to capture ladder, cross-reference, and I/O listing in a single document. This is the safest long-term archival format because it does not depend on CX-Programmer being available years later.
4. CX-Simulator integration: For testing program changes offline, use CX-Simulator (included in the full CX-One license) to load the project, simulate I/O, and verify logic before downloading to the live CJ1M.

10. Communication Setup for CJ1M

Connecting CX-Programmer to a CJ1M requires the correct driver selection in the Change PLC dialog and the appropriate physical or network path.

For EtherNet/IP-equipped CJ1M CPUs, set the rotary switches (or use the default IP 192.168.250.1 if all switches are 0xFF) and configure CX-Programmer's Ethernet network with the matching node and network numbers. CX-Integrator is used to verify routing through Ethernet and Controller Link modules.

11. Field-Proven Caveats and Best Practices

Several recurring issues surface in CJ1M service work. The following matrix lists the symptom, root cause, and corrective action.

Adopt these baseline practices for every CJ1M service visit:

• Always upload the program before any modification, save as .cxp, and store a PDF copy.
• Record the CPU firmware version and serial number; quote them on any future spare-part order.
• Verify the workstation's CX-One license level (Full vs Lite) before dispatching to site; nothing delays a service call like discovering a Lite license on arrival.
• Carry a known-good USB cable and a USB-to-serial adapter as backup paths to the peripheral port.
• Confirm CX-Programmer version matches the customer's environment; CXONE-AL01D-V4 ships CX-Programmer 9.x which can open but cannot save down to 7.x projects without explicit export.

12. FAQ