The Omron CJ2M-CPU14, also cataloged as the CJ2M-CPU14 CJ-series CPU Unit, executes PLC application programs and manages cyclic I/O processing within the CJ-series control system. It provides 30K steps of user memory, 2,560 I/O bits, 0.04 us minimum basic-instruction execution, and support for up to three expansion racks.

Technical Identifier Matrix

Hardware Specifications

The official Omron specification identifies the CJ2M-CPU14 as a CPU1[] model with 90 mm x 75 mm x 31 mm dimensions, weight of 130 g or less, and 5 VDC, 0.5 A current consumption.

The supplied 10 to 90 percent humidity, 0 to 55 deg C operating temperature, -20 to 70 deg C storage temperature, 2,000 m altitude, IEC 61010-2-201 pollution degree, and IEC 61000-4-4 noise-immunity specifications correspond to the official CJ2M general specifications.

Omron CJ2M CPU Processing and System Architecture

The CJ2M-CPU14 belongs to the CJ2M CPU1[] group. Omron specifies 30K steps of user memory and 64K words of data memory for this model. The CPU supports 2,560 I/O bits and up to 40 Units across the PLC configuration, with a maximum of three expansion racks.

The CPU1[] architecture does not include the built-in EtherNet/IP function found on the CJ2M-CPU3[] models. Communication expansion can instead be implemented using the supported CJ-series communication and option-unit architecture.

The CPU provides a USB 2.0-compliant B-type peripheral port with a maximum baud rate of 12 Mbps and a maximum transmission distance of 5 m. The memory-card function supports 128 MB, 256 MB, and 512 MB cards using Omron-specified memory cards.

Package Contents & Ordering Information

• 1x Omron CJ2M-CPU14 CPU Unit
• Product Family: CJ2M
• Series: CJ-series
• CPU Type: CPU1[] Simple Type
• Memory Card: Not included unless specifically listed
• Battery, communication cables, option boards, power supply units, and I/O units are not included unless specifically listed.

Field Installation Guidelines

• Install the CPU Unit in the CJ-series rack according to the Omron system configuration requirements.
• Mount the CPU in a panel-installed control cabinet.
• Maintain grounding resistance below 100 ohm.
• Verify the CJ-series power supply configuration before energizing the CPU rack.
• Maintain an ambient temperature of 0 to 55 deg C during operation.
• Maintain ambient humidity between 10 and 90 percent without condensation.
• Keep the installation environment free from corrosive gases.
• Do not exceed the specified 2,000 m operating altitude.
• Maintain appropriate separation between PLC wiring and high-voltage or high-current conductors.
• Use Omron-specified memory cards for file-memory operations.
• Do not remove a memory card while the CPU is accessing file memory.
• Verify CPU model and firmware compatibility before transferring a PLC program.
• For expansion-rack installations, observe the three-rack maximum and total Unit limitations.

Frequently Asked Questions

• Q: What is the user memory capacity of the CJ2M-CPU14?
  A: The CJ2M-CPU14 provides 30K steps of user memory. Omron also specifies 64K words of data memory for this CPU1[] model.
• Q: What are the physical dimensions of the CPU Unit?
  A: Omron specifies 90 mm x 75 mm x 31 mm, equivalent to 9.0 cm x 7.5 cm x 3.1 cm. The specified weight is 130 g or less.
• Q: What current does the CJ2M-CPU14 consume?
  A: The official specification lists 5 VDC, 0.5 A for the CJ2M CPU1[] group containing the CPU14 model. Additional connected equipment can increase rack power demand.
• Q: Does the CJ2M-CPU14 have built-in EtherNet/IP?
  A: No. The CPU14 belongs to the CJ2M CPU1[] group, which does not provide the built-in EtherNet/IP function specified for the CPU3[] group.
• Q: What is the maximum CJ-series expansion capacity?
  A: A CJ2M CPU system can use up to three expansion racks and up to 40 Units per PLC. Actual configuration limits depend on the installed Unit types.
• Q: What operating temperature is specified?
  A: The specified ambient operating temperature is 0 to 55 deg C. Storage temperature is -20 to 70 deg C, excluding the battery.
• Q: Which memory cards are supported?
  A: Omron specifies 128 MB, 256 MB, and 512 MB Memory Cards for CJ2M file memory. Omron-provided memory cards should be used for the specified file-memory function.
• Q: What peripheral communication interface is provided?
  A: The CJ2M CPU provides a USB 2.0-compliant B-type peripheral port. Omron specifies a maximum transmission rate of 12 Mbps and a maximum transmission distance of 5 m.