The Omron CJ1M-CPU13, also cataloged as the CJ1M-CPU13 CPU Unit, operates as a dedicated hardware component for centralized programmable logic execution and system sequencing within Omron CJ Series automation platforms. Configured for real-time control across expanded local rack architectures, this processor executes high-speed instructions, manages system interrupts, and coordinates data transfer across up to 20 total connected modules via dedicated serial and peripheral interface ports.

Technical Identifier Matrix

Hardware Specifications

PLC Backplane Bus Velocity and Serial Determinism

The CJ1M-CPU13 provides backplane execution velocity with an basic LD instruction time of 100 ns (0.10 microseconds) and a MOV instruction execution time of 0.30 microseconds. System scan processing maintains low overhead latency of 0.5 ms. Unlike lower-tier CPU models, the CJ1M-CPU13 supports 1 expansion rack, doubling total unit connectivity to 20 modules (10 on the CPU rack, 10 on the expansion rack) and expanding I/O capacity to 640 points. Communication through the built-in RS-232C port and peripheral port allows deterministic data framing using host link, no-protocol, or FINS serial commands, while the integrated CompactFlash interface handles fast non-volatile backup of user programs, parameters, and DM memory contents.

Package Contents & Ordering Information

• 1x Omron CJ1M-CPU13 CPU Unit
• 1x End Cover (CJ1W-TER01 required for backplane termination)
• 1x Quick Reference Manual Document

Field Installation Guidelines

• Mounting Configuration: Direct-mount the CPU unit onto a standard 35 mm DIN rail. Ensure the module is locked adjacent to the power supply unit on the leftmost position of the CPU rack.
• Expansion Rack Connection: When using an expansion rack, connect the CPU rack to the expansion rack using an I/O Expansion Cable. Keep cable routing isolated from high-voltage wiring.
• Backplane Bus Termination: Secure a CJ1W-TER01 End Cover to the rightmost unit on both the main CPU rack and the expansion rack to close the backplane communication loop.
• Serial Cable Shielding: For RS-232C communication lines, use shielded cable networks. Connect the shield braid to the shell of the D-sub connector and ground the system frame ground (FG) to an earth point with resistance under 100 ohms.

Frequently Asked Questions

• What is the maximum physical I/O capacity supported by the CJ1M-CPU13?

  The CPU supports up to 640 physical I/O points distributed across a maximum of 20 connectable I/O units.

• How many expansion racks can be connected to the CJ1M-CPU13?

  The CJ1M-CPU13 supports a maximum of 1 expansion rack holding up to 10 additional units, complementing the 10 units on the main CPU rack.

• What basic instruction execution speeds does this model achieve?

  The module executes basic LD (Load) instructions in 100 ns (0.10 microseconds) and MOV instructions in 0.30 microseconds.

• What built-in serial communication interface ports are provided?

  The CPU includes 1 built-in RS-232C port (D-sub 9-pin) and 1 dedicated peripheral port for programming and host communications.

• What memory card type is supported for external program storage?

  The CPU features an integrated card slot that accepts standard CompactFlash memory cards for data logging, parameter loading, and program storage.

• What is the user program capacity and data memory size?

  The CJ1M-CPU13 provides 20K steps of user program capacity and 32K words of Data Memory (DM). Extended Memory (EM) is not supported.

• Is hot-swapping allowed on the CJ1M-CPU13 backplane?

  No, main AC/DC power to the rack power supply unit must be turned off before inserting or removing any CPU or I/O modules on the backplane.

• Why is the CJ1W-TER01 End Cover required?

  The CJ1W-TER01 terminates the backplane bus logic circuit. The CPU will flag a bus error and fail to execute logic if the end cover is absent.