CJ2M-CPU3@/-CPU1@/-MD21@
Function Specifications
Functions
Description
A minimum cycle time can be set.
(0.2 to 32,000 ms; Unit: 0.1 ms)
Minimum Cycle Time
The minimum cycle time setting can be changed in MONITOR mode.
Cycle Time
Management Cycle Time Monitoring
The cycle time is monitored.
(0.01 to 40,000 ms; Unit: 0.01 ms)
Instructions with long execution times can be executed over multiple cycles to prevent
fluctuations in the cycle time.
Background Processing
Cyclic Refreshing Cyclic refreshing of Basic I/O Units, Special I/O Units, and CPU Bus Units
Immediate
Refreshing
BasicI/OUnits,
I/O refreshing by immediate refreshing instructions
I/O Refreshing
Special I/O
Units, and CPU
Bus Units
Refreshing by
I/O refreshing by IORF instruction
IORF
Unit Recognition at Startup
Input Response Time Setting
The number of units recognized when the power is turned ON is displayed.
The input response times can be set for Basic I/O Units. The response time can be
increased to reduce the effects of chattering and noise at input contacts. The response
time can be decreased to enable detecting shorter input pulses.
All of the outputs on Basic I/O Units can be turned OFF when an error occurs in RUN or
MONITOR mode.
Load OFF Function
Basic I/O Units
Unit (I/O)
Management
Alarm information can be read from Basic I/O Units and the number of Units recognized
can be read.
Basic I/O Unit Status Monitoring
Reading/writing data using
instructions for specific Units
Special instructions can be used to read/write required data for specific Units at high
speed.
Special I/O
Units and CPU
Bus Units
Unit Restart Bits to Restart Units
Automatic I/O Allocation at Startup
A Special I/O Unit or CPU Bus Unit can be restarted.
I/O words can be automatically allocated to the Basic I/O Units that are connected in the
PLC to start operation automatically without registering Units into I/O tables.
Configuration
Management
The current unit configuration can be registered in I/O tables to prevent it from being
changed, to reserve words, and to set words.
I/O Table Creation
Rack/Slot First Word Settings
The first words allocated to a Units on the Racks can be set.
The status of I/O memory can be held when the operating mode is changed or power is
Holding I/O Memory when Changing Operating Modes turned ON. The forced-set/reset status can be held when the operating mode is changed
or power is turned ON.
Files (such as program files, data files, and symbol table files) can be stored in Memory
Card, EM File Memory, or Comment Memory.
File Memory
Memory
Management
The user program and Parameter Area can be backed up to an internal flash memory
when they are transferred to the CPU Unit.
Built-in Flash Memory
EM File Function
Parts of the EM Area can be treated as file memory.
I/O comments can be stored as symbol table files in a Memory Card, EM file memory,
or comment memory.
Storing Comments
EM Configuration
EM Area can be set as trace memory or EM file memory.
A program file and parameter files can be read from a Memory Card when the power is
turned ON.
Automatic File Transfer at Startup
Memory
Cards
Program Replacement during PLC Operation
User programs can be transferred from a Memory Card to CPU Unit during operation.
Function for Reading and Writing Data from a Memory Data in I/O memory in the CPU Unit can be written to a Memory Card in CSV/TXT format.
Card Data in CSV/TXT format in the Memory Card can be read to I/O memory in the CPU Unit.
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OMRON [ OMRON ELECTRONICS LLC ]
