Function Specifications - Omron CJ2 User Manual

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Function Specifications

Functions
Cycle Minimum Cycle Time
Time Man-
agement
Cycle Time Monitoring
Background Processing
Unit (I/O) Basic I/O I/O
Manage- Units, Spe- Refresh-
ment cial I/O ing
Units, and
CPU Bus
Units
Unit Recognition at Startup
Basic I/O Input Response Time Setting
Units
Load OFF Function
Basic I/O Unit Status Monitoring
Special I/O Unit Restart Bits to Reset Units
Units and
CPU Bus
Units
Configura- Automatic I/O Allocation at Startup
tion Man-
agement
I/O Table Creation
Rack/Slot First Word Settings
Holding I/O Memory when Changing Operating
Memory
Manage- Modes
ment
File Memory
Built-in Flash Memory
EM File Function
Storing Comments
EM Configuration
Memory Automatic File Transfer at Startup
Cards
Program Replacement during PLC Operation
Function for Reading and Writing Data from a
Memory Card
CJ2 CPU Unit Hardware User's Manual
A minimum cycle time can be set.
(0.2 to 32,000 ms; Unit: 0.1 ms)
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.
Cyclic Refreshing Cyclic refreshing of Basic I/O Units, Special I/O Units, and CPU Bus
Units
Immediate Refreshing I/O refreshing by immediate refreshing instructions
Refreshing by IORF I/O refreshing by IORF instruction
The number of units recognized when the power is turned ON is dis-
played.
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 decreases 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.
Alarm information can be read from Basic I/O Units and the number of
Units recognized can be read.
A Special I/O Unit or CPU Bus Unit can be reset.
I/O words can be automatically allocated to the Basic I/O Units that are
started to start operation automatically without registering Units into I/O
tables.
The current unit configuration can be registered in I/O tables to prevent it
from being changed, to reserve words, and to set words.
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 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.
The user program and Parameter Area can be backed up to an internal
flash memory when they are transferred to the CPU Unit.
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.
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.
The whole user program can be read from a Memory Card to CPU Unit
during operation.
Data in I/O memory in the CPU Unit can be written to a Memory Card in
CSV/TXT format. Data in CSV/TXT format in the Memory Card can be
read to I/O memory in the CPU Unit.
1 Overview
Description
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