SYSMAC CJ-series CPU Unit with the functionality of an Ethernet Unit.

The CPU functional element has the same functionality as a CJ1M-CPU11/12/13. The enables effective usage of legacy applications.

High-capacity Memory Cards up to 128 MB can be installed, and used to backup the program and system settings, or log customer data.

The large instruction set can support diverse applications. Four types of programming are supported (ladder, structured text, sequential function charts, and instruction lists), with approximately 400 instructions and 800 instruction variations.

These CJ-series CPU Units support structured programming using function blocks, which can improve the customer's program development resources


Item    Specifications
Control method    Stored program
I/O control method    Cyclic scan and immediate processing are both possible.
Programming Languages    Ladder Logic (LD), Sequential Function Charts (SFC), Structured Text (ST), and Mnemonic.
CPU processing mode    Normal Mode or Peripheral Servicing Priority Mode
Instruction length    1 to 7 steps per instruction
Ladder instructions    Approx. 400 (3-digit function codes)
Execution time    Basic instructions    0.10 μs min.
Special instructions    0.15 μs min.
Overhead time    CJ1M-CPU12-ETN/CPU13-ETN: 0.5 ms min.
Unit connection method    No Backplane: Units connected directly to each other.
Mounting method    DIN Track (screw mounting not possible)
Maximum number of connectable Units    Total of 19 Units, including 9 Units on CPU Rack and 10 Units on one Expansion Rack.
(The built-in Ethernet port on the CPU Unit must be allocated to a slots 0, and is counted as one Unit.
Maximum number of Expansion Racks    CJ1M-CPU13-ETN: 1 max. (An I/O Control Unit is required on the CPU Rack and an I/O Interface Unit
Number of tasks    288 (cyclic tasks: 32, interrupt tasks: 256)
With CJ1-H or CJ1M CPU Units, interrupt tasks can be defined as cyclic tasks called extra cyclic
tasks. Including these, up to 288 cyclic tasks can be used.
Cyclic tasks are executed each cycle and are controlled with TKON(820) and TKOF(821) instructions.
I/O interrupt tasks: 32 max.
External interrupt tasks: 256 max.
Interrupt types    Scheduled Interrupts: Interrupts generated at a time scheduled by the CPU Units built-in timer.
I/O Interrupts: Interrupts from Interrupt Input Units.
Power OFF Interrupts (See note): Interrupts executed when the CPU Units power is turned OFF.
External I/O Interrupts: Interrupts from the Special I/O Units or CPU Bus Units.
Note: Not supported when the CJ1W-PD022 Power Supply Unit is mounted.