The Omron CJ1M-CPU13-ETN, also cataloged as the CJ1M-CPU13 CPU Processor Unit, operates as a dedicated hardware component for central logic processing and Ethernet network communication execution within Omron CJ-series PLC systems.

Technical Identifier Matrix

• Base Part Number: CJ1M-CPU13-ETN
• Brand: Omron
• Processor Type: CJ1M CPU Processor with Built-in Ethernet Port
• I/O Capacity: 640 points
• Mountable Units: 20 units maximum across 2 racks (1 Expansion Rack max)

Hardware Specifications

Backplane Bus Velocity & Firmware Compatibility

The Omron CJ1M-CPU13-ETN drives high-speed cyclic task processing with a basic instruction execution speed of 0.1 us for LD operations. Its integrated backplane bus interface coordinates high-density I/O refreshes and interrupt processing for up to 20 local and expansion I/O units across a single expansion architecture.

The integrated Ethernet port implements FINS socket communication protocols, enabling direct high-speed network messaging and program uploads without requiring an auxiliary communications module. Embedded flash firmware maintains determinism during backplane data exchanges, ensuring compatibility with standard CJ1W I/O modules, Special I/O Units, and CPU Bus Units.

Package Contents & Ordering Information

• 1x Omron CJ1M-CPU13-ETN CPU Unit
• 1x End Cover Assembly (CJ1W-TER01)
• 1x Hardware Installation Sheet

Field Installation Guidelines

• Rack Assembly: Lock the CJ1M-CPU13-ETN to the power supply unit on the DIN rail using top and bottom slider catches. Attach the CJ1W-TER01 End Cover to the rightmost unit on the rack to complete the backplane bus.
• Ethernet Wiring: Connect Category 5 or 5e Shielded Twisted-Pair (STP) cabling to the built-in RJ45 Ethernet port, maintaining a maximum segment distance of 100 m to the Ethernet switch.
• Peripheral Connection: Connect programming cables or hand-held consoles strictly to the dedicated front peripheral port using Omron tool bus cabling.
• Grounding & Shielding: Terminate cable braid shields to the functional earth (FE) terminal on the power supply module. Ensure a dedicated 2.0 mm sq or larger conductor grounds the power supply ground terminal to protective earth via a 360-deg braid clamp.

Frequently Asked Questions

• What is the 5 VDC backplane current consumption for the CJ1M-CPU13-ETN?

  The CJ1M-CPU13-ETN draws 0.95 A at 5 VDC directly from the rack power supply unit.

• What is the execution time for standard LD basic instructions?

  The CPU executes standard LD instructions in 0.1 us per instruction.

• How many total I/O points and mountable units are supported by this CPU?

  The CPU supports up to 640 local I/O points and up to 20 mountable units (1 Expansion Rack maximum).

• What memory structure is available for user program and data storage?

  The module provides 20K steps of program memory and 32K words of Data Memory (DM), with no Extended Memory (EM) banks.

• Is an end cover required for the CJ1M-CPU13-ETN backplane to function?

  Yes, a CJ1W-TER01 End Cover must be installed on the rightmost module of the rack to terminate the backplane bus.

• What physical communication interfaces are integrated into the CPU panel?

  The unit incorporates a built-in RJ45 Ethernet port (100BASE-TX/10BASE-T) and an Omron peripheral tool port.

• Does the CJ1M-CPU13-ETN support hot-swapping during CPU operation?

  No, power to the rack assembly must be switched off before removing or inserting the CPU module.

• What cable grounding method is recommended for the built-in Ethernet connection?

  Use Category 5 or 5e Shielded Twisted-Pair (STP) cable with 360-deg braid shielding linked to the rack protective earth terminal.