CJ2M-CPU3@/-CPU1@/-MD21@
6
Performance Specifications
*1. Force-setting/resetting bits in the EM Area is possible only for banks specified for the EM Area force-set/reset function.
Items CJ2M-
CPU11/31 CPU12/32 CPU13/33 CPU14/34 CPU15/35
User Memory 5K steps 10K steps 20K steps 30K steps 60K step s
I/O Bits 2,560 bits
Processing
Speed
Overhead Processing Time
Normal Mode:
CJ2M-CPU3@: 270 μs *
CJ2M-CPU1@: 160 μs *
*The following time must be added when using EtherNet/IP tag data links for the CJ2M-C PU3@.
100 μs + (Number of words transferred × 1.8 μs)
The following time must be added when using Pulse I/O Modules with a CJ2M CPU Unit:
10 μs × Number of Pulse I/O Modules
Execution Time Basic Instructions : 0.04 μs min.
Special Instructions : 0.06 μs min.
Interrupts
I/O Interrupts and
External Interrupts Interrupt ta sk startup ti me: 31 μs
Return time to cyclic task : 10 μs
Scheduled
Interrupts
Minimum time interval : 0.4 ms (set in 0.1 ms increments)
Interrupt ta sk startup ti me: 30 μs
Return time to cyclic task : 11 μs
Maximum Number of Connectable Units Total per CPU Rack or Expansion Rack: 10 Unit s max.;
Total per PLC: 40 Units max.
Basic I/O Units No limit
However, a maximum of two CJ1W-INT01 Interrupt Input Units can be mounted.
Special I/O Un it s Units for up to 96 unit numbers can be mounted. (Unit number s run from 0 to 95. Units are allocated between
1 and 8 unit numbers.)
CPU Bus Units CJ2M-CPU3@: 15 Units max.
CJ2M-CPU1@: 16 Units max.
Pulse I/O Modules 2 Units max. *
*Supported only by CJ2M CPU Units with unit version 2.0 or later. A Pulse I/O Module must be mounted.
Slots for which interrupts can be
used Slots 0 to 4 on CPU Rack
Maximum Number of Expansion Racks 3 max.
CIO Area
I/O Area 2,560 bits (160 words) : Words CIO 0000 to CIO 0159
Link Ar ea 3,200 bits (200 words) : Words CIO 1000 to CIO 1199
CPU Bus Unit Area 6,400 bits (400 words) : Words CIO 1500 to CIO 1899
Special I/O Unit Area 15,360 bits (960 words): Words CIO 2000 to CIO 2959
Pulse I/O Area 20 inputs, 12 outputs (CIO 2960 to CIO 2963)
Serial PLC Link Words 1,440 bits (90 words) : Words CIO 3100 to CIO 3189
DeviceNet Area 9,600 bits (600 words) : Words CIO 3200 to CIO 3799
Internal I/ O Area 3,200 bits (200 words) : Words CIO 1300 to CIO 1499 (Cannot be used for external I /O.)
37,504 bits (2,344 words): Words CIO 3800 to CIO 6143 (Cannot be used for external I/O.)
Work Area 8,192 bits (512 words): Words W000 to W511 (Cannot be use d for external I/O.)
Holding Area
8,192 bits (512 words): Words H000 to H511
Bits in this area maintain their ON/OFF status when PLC is turned OFF or operating mode is changed.
Words H512 to H1535: These words can be used only for function blocks. They can be used only for fu nction
block instances (i.e., they are allocated only for internal variables in function blocks).
Auxili ary Area
Read-only: 31,744 bits (1,98 4 words)
•7,168 bits (448 words): Words A0 to A447
•24,576 bits (1,536 words): Words A10000 to A11535 *
Read/write: 16,384 bits (1,024 words) in words A448 to A1471 *
*A960 to A1471 and A10000 to A11535 ca nnot be accessed by CPU Bus Units, Special I/O Units, PTs, and
Support Software that do not sp ecifically support the CJ2 CPU Units.
Tempo r ary Area 16 bits: TR0 to TR15
Timer Area 4,096 timer numbers (T0000 to T4095 (sepa rate from counters))
Counter Area 4,096 counter numbers (C0000 to C4095 (se parate from timers))
DM Are a
32k words *
•DM Area words for Special I/O Units: D20000 to D29599 (100 words × 96 Units)
•DM Area words for CPU Bus Units: D30000 to D31599 (100 words × 16 Units)
*Bits in the EM Area can be addressed either by bit or by word. These bits cannot be addressed by CPU Bu s
Units, Special I/O Units, PTs, and Support Software that do no t specifically support the CJ2 CPU Units.
EM Area
32k words/bank × 4 banks max.: E00_00000 to E3_32767 max. *
*Bits in the EM Area can be addressed either by bit or by word. These bits cannot be addressed by CPU Bu s
Units, Special I/O Units, PTs, and Support Software that do no t specifically support the CJ2 CPU Units.
32K words × 1 bank 32K words × 4 banks
Force-S/R Enabled Banks *1Bank 0 hex Bank 0 to 3 hex
Index Registers IR0 to IR15
These are special registers for storing PLC memory addresses for indirect addressing . (Index Registers can
be set so that they are unique in each task or so that they are shared by all tasks.)
Cyclic Task Flag Area 128 flags
Memory Card 128 MB, 256 MB, or 512 MB
Operating Modes
PROGRAM Mode: Programs are not executed. Preparations can be executed prior to program execution in
this mode.
MONITOR Mode: Programs are executed, and some operations, such as online editing, and changes to
present values in I/O memory, are ena bled in this mode.
RUN Mode: Programs are executed. This is the normal operating mode.