80
Specifications Section 2-1
CJ1 CPU Units
Note The number of steps in a program is not the same as the number of instruc-
tions. For example, LD and OUT require 1 step each, but MOV(021) requires
3 steps. The program capacity indicates the total number of steps for all
instructions in the program. Refer to 10-5 Instruction Execution Times and
Number of Steps for the number of steps required for each instruction.
Common Specifications
CPU CJ1G-CPU45 CJ1G-CPU44
I/O bits 1,280
User program memory
(See note.)
60 Ksteps 30 Ksteps
Data Memory 32 Kwords
Extended Data Memory 32 Kwords x 3 banks
E0_00000 to E2_32767
32 Kwords x 1 bank
E0_00000 to E0_32767
Current consumption 0.91 A at 5 V DC
Item Specifications Reference
Control method Stored program ---
I/O control method Cyclic scan and immediate processing are both possible. ---
Programming Ladder diagram ---
CPU processing mode CJ1-H CPU Units: Normal Mode, Parallel Processing Mode with Asyn-
chronous Memory Access, Parallel Processing Mode with Synchro-
nous Memory Access, or Peripheral Servicing Priority Mode
CJ1M CPU Units: Normal Mode or Peripheral Servicing Priority Mode
CJ1 CPU Units: Normal Mode or Peripheral Servicing Priority Mode
---
Instruction length 1 to 7 steps per instruction 10-5 Instruction Execu-
tion Times and Num-
ber of Steps
Ladder instructions Approx. 400 (3-digit function codes) ---
Execution time CJ1-H CPU Units:
Basic instructions: 0.02 µs min.
Special instructions: 0.06 µs min.
CJ1M CPU Units (CPU12/13/22/23):
Basic instructions: 0.10 µs min.
Special instructions: 0.15 µs min.
CJ1M CPU Units (CPU11/12):
Basic instructions: 0.1 µs min.
Special instructions: 0.15 µs min.
CJ1 CPU Units:
Basic instructions: 0.08 µs min.
Special instructions: 0.12 µs min.
10-5 Instruction Execu-
tion Times and Num-
ber of Steps
Overhead time CJ1-H CPU Units:
Normal mode: 0.3 ms min.
Parallel processing: 0.3 ms min.
CJ1M CPU Units (CPU12/13/22/23): 0.5 ms min.
CJ1M CPU Units (CPU11/12): 0.7 ms min.
CJ1 CPU Units: 0.5 ms min.
---
Unit connection
method
No Backplane: Units connected directly to each other. ---
Mounting method DIN Track (screw mounting not possible) 5-2-6 DIN Track Instal-
lation
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