1 Overview
1-22
CJ2 CPU Unit Hardware User’s Manual
*3 Supported only by CJ2M CPU Unit with unit version 2.0 or later. A Pulse I/O Module must be mounted.
Functions Description
Pulse I/O
Func-
tions
*3
Pulse Input
Functions
Normal Inputs Input signals are read during I/O refreshing and stored in I/O memory.
Interrupt Inputs An interrupt task can be started when an input signal turns ON or turns
OFF.
Quick-response Inputs Input signals that are shorter than the cycle time are read and stored in
I/O memory.
High-speed Counter Inputs High-speed pulse signals are counted. Interrupt tasks can also be
started.
Pulse Out-
put Func-
tions
Normal Outputs The status of I/O memory is output during I/O refreshing.
Pulse Outputs A pulse signal is output with the specified frequency and number of
pulses at a fixed duty ratio (50%).
PWM Outputs A pulse signal is output at the specified duty ratio.
Origin Searches The origin point of the machine is determined according to the specified
origin search parameters while actually outputting pulses and using the
origin and origin proximity input signals as conditions. (Pulse inputs and
outputs are also used for this function.)
Memory
Manage-
ment
Holding I/O Memory when Changing Operating
Modes
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.
File Memory Files (such as program files, data files, and symbol table files) can be
stored in Memory Card, EM File Memory, or Comment Memory.
Built-in Flash Memory The user program and Parameter Area can be backed up to an internal
flash memory when they are transferred to the CPU Unit.
EM File Function Parts of the EM Area can be treated as file memory.
Storing Comments I/O comments can be stored as symbol table files in a Memory Card, EM
file memory, or comment memory.
EM Configuration EM Area can be set as trace memory or EM file memory.
Memory
Cards
Automatic File Transfer at Startup A program file and parameter files can be read from a Memory Card
when the power is turned ON.
Program Replacement during PLC Operation User programs can be transferred from a Memory Card to CPU Unit dur-
ing operation.
Function for Reading and Writing Data from a
Memory Card
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.
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