Datasheet

4
CJ1M-CPU1@-ETN
CIO (Core I/O) Area Internal I/O Area
4,800 bits (300 words): CIO 120000 to CIO 149915 (words CIO 1200 to CIO 1499)
37,504 (2,344 words): CIO 380000 to CIO 614315 (words CIO 3800 CIO 6143)
These bits in the CIO Area are used as work bits in programming to control program execution. They cannot be used
for external I/O.
Work Area
8,192 bits (512 words): W00000 to W51115 (W000 to W511)
Controls the programs only. (I/O from external I/O terminals is not possible.)
Note: When using work bits in programming, use the bits in the Work Area first before using bits from other areas.
Holding Area
8,192 bits (512 words): H00000 to H51115 (H000 to H511) Holding bits are used to control the execution of the program,
and maintain their ON/OFF status when the PLC is turned OFF or the operating mode is changed.
Note: The Function Block Holding Area words are allocated from H512 to H1535. These words can be used only for
the function block instance area (internally allocated variable area).
Auxiliary Area
Read only: 7,168 bits (448 words): A00000 to A44715 (words A000 to A447)
Read/write: 8,192 bits (512 words): A44800 to A95915 (words A448 to A959)
Auxiliary bits are allocated specific functions.
Temporary Area
16 bits (TR0 to TR15)
Temporary bits are used to temporarily store the ON/OFF execution conditions at program branches.
Timer Area 4,096: T0000 to T4095 (used for timers only)
Counter Area 4,096: C0000 to C4095 (used for counters only)
DM Area
32 Kwords: D00000 to D32767
Used as a general-purpose data area for reading and writing data in word units (16 bits). Words in the DM Area
maintain their status when the PLC is turned OFF or the operating mode is changed.
Internal Special I/O Unit DM Area: D20000 to D29599 (100 words × 96 Units)
Used to set parameters for Special I/O Units.
CPU Bus Unit DM Area: D30000 to D31599 (100 words × 16 Units)
Used to set parameters for CPU Bus Units.
EM Area None
Index Registers
IR0 to IR15
Store PLC memory addresses for indirect addressing. Index registers can be used independently in each task.
One register is 32 bits (2 words).
Setting to use index registers either independently in each task or to share them between tasks.
Task Flag Area
32 (TK0000 to TK0031)
Task Flags are read-only flags that are ON when the corresponding cyclic task is executable and OFF when the
corresponding task is not
executable or in standby status.
Trace Memory 4,000 words (trace data: 31 bits, 6 words)
File Memory
• Memory Cards: Compact flash memory cards can be used (MS-DOS format).
• OMRON Memory Cards can be used.
Function
Specifications
Constant cycle time 1 to 32,000 ms (Unit: 1 ms)
Cycle time monitoring Possible (Unit stops operating if the cycle is too long): 10 to 40,000 ms (Unit: 10 ms)
I/O refreshing
Cyclic refreshing, immediate refreshing, refreshing by IORF(097).
Note: ORF(097) refreshes I/O bits allocated to Basic I/O Units and Special I/O Units.
Timing of special
refreshing for CPU
Bus Units
Data links for Controller Link Units remote I/O for DeviceNet Units, and other special refreshing for CPU Bus Units is
performed at the following times:
I/O refresh period and when the CPU BUS UNIT I/O REFRESH (DLNK(226)) instruction is executed.
I/O memory
holding when
changing
operating modes
Depends on the ON/OFF status of the IOM Hold Bit in the Auxiliary Area.
Load OFF
All outputs on Output Units can be turned OFF when the CPU Unit is operating in RUN, MONITOR, or PROGRAM
mode.
Timer/Counter PV
refresh method
BCD or binary (CX-Programmer Ver. 3.0 or higher).
Input response time
setting
Time constants can be set for inputs from Basic I/O Units.
The time constant can be increased to reduce the influence of noise and chattering or it can be decreased to detect
shorter pulses on the inputs.
Mode setting at
power-up
Possible.
Note: By default, the CPU Unit will start in RUN mode if a Programming Console is not connected.
Flash memory (CJ1-
H and CJ1M CPU
Units only)
• The user program and parameter area data (e.g., PLC Setup) are always backed up automatically in flash memory.
(automatic backup and restore.)
• CPU Units with unit version 3.0 or later only:
When downloading projects from CX-Programmer Ver. 5.0 or higher, symbol table files (including CX-Programmer
symbol names, I/O comments), comment files (CX-Programmer rung comments, other comments), and program
index files (CX-Programmer section names, section comments, or program comments) are stored in comment
memory within the flash memory.
Item Specifications