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Omron CJ1M-CPU11, CJ1M-CPU11
| Item | Specifications | |||
| Control method | Stored program | |||
| I/O control method | Cyclic scan and immediate processing are both possible. | |||
| Programming | LD (Ladder), SFC (Sequential Function Chart), ST (Structured Text), Mnemonic | |||
| CPU processing mode | CJ1M CPU Units: 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 | CJ1M CPU Units (CPU12/13/22/23): Basic instructions: 0.10 μs min. Special instructions: 0.15 μs min. CJ1M CPU Units (CPU11/21): Basic instructions: 0.10 μs min. Special instructions: 0.15 μs min. |
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| Overhead time | CJ1M CPU Units (CPU12/13/22/23): 0.5 ms min. CJ1M CPU Units (CPU11/21): 0.7 ms min. |
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| Unit connection method | No Backplane: Units connected directly to each other. | |||
| Mounting method | DIN Track (screw mounting not possible) | |||
| Maximum number of connectable Units |
CJ1M CPU Units: Total of 20 Units in the System, including 10 Units on CPU Rack and 10 Units on one Expansion Rack. |
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| Maximum number of Expansion Racks |
CJ1M CPU Units (CPU 13/23 only): 1 max. (An I/O Control Unit is required on the CPU Rack and an I/O Interface Unit is required on the Expansion Rack.) CJ1M CPU Units (CPU11/12/21/22): Expansion is not possible. |
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| Number of tasks | 288 (cyclic tasks: 32, interrupt tasks: 256) With 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. Note 1. Cyclic tasks are executed each cycle and are controlled with TKON(820) and TKOF(821) instructions. Note 2. The following 4 types of interrupt tasks are supported. Power OFF interrupt tasks: 1 max. Scheduled interrupt tasks: 2 max. I/O interrupt tasks: 32 max. External interrupt tasks: 256 max. |
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| Interrupt types | Scheduled Interrupts: Interrupts generated at a time scheduled by the CPU Unit’s built-in timer. (See note. 1) I/O Interrupts: Interrupts from Interrupt Input Units. Power OFF Interrupts (See note 2.): Interrupts executed when the CPU Unit’s power is turned OFF. External I/O Interrupts: Interrupts from the Special I/O Units or CPU Bus Units. Note 1. CJ1M CPU Units: Scheduled interrupt time interval is 0.5 ms to 999.9 ms (in increments of 0.1 ms), 1 ms to 9,999 ms (in increments of 1 ms), or 10 ms to 99,990 ms (in increments of 10 ms) |
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