Control method |
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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 | 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 CPU Units (CPU22/23): 0.5 ms min. | |||||
CJ1M CPU Units (CPU21): 0.7 ms min. | ||||||
Unit connection method | No Backplane: Units connected directly to each other. | |||||
Mounting method | DIN Track (screw mounting not possible) | |||||
Maximum number of | Total of 20 Units in the System, including 10 Units on CPU Rack and 10 Units on one Expansion Rack. | |||||
connectable Units | ||||||
Maximum number of | CJ1M CPU Units (CPU 13/23 only): 1 max. (An I/O Control Unit is required on the CPU Rack and an I/O | |||||
Expansion Racks | Interface Unit is required on the Expansion Rack.) | |||||
CJ1M CPU Units (CPU11/12/21/22): Expansion is not possible. |
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