1 Overview
1-6
CJ2M CPU Unit Pulse I/O Module User’s Manual
1-3 Functions of CJ2M Pulse I/O
The following functions of the CJ2M can be used by installing a Pulse I/O Module.
Additional Information
For information on installing Pulse I/O Modules, the number of Blocks and their positions, indica-
tors, part names, part functions, and the external dimensions, refer to the CJ2 CPU Unit Hard-
ware User's Manual (Cat. No. W472).
Item Function Reference
Inputs Normal inputs The status of input signals for normal I/O is read and
stored in I/O memory during the I/O refresh period.
4-1 Normal Inputs
Interrupt inputs in
Direct Mode
The input signal triggers an interrupt task when it
turns ON or OFF.
6-2 Interrupt Inputs
Interrupt inputs in
Counter Mode
The number of ON transitions or OFF transitions in
the input signal is counted and an interrupt task is
started when the specified count is reached.
High-speed
counter inputs
High-speed counter inputs can be used to count
high-speed pulse signals. Interrupt tasks can also
be started.
Section 7 High-speed
Counters
Outputs Normal outputs Outputs according to the content of the I/O memory
and refresh timing.
4-2 Normal Outputs
Pulse outputs The specified number of pulses are output at a fixed
duty ratio (50%) at the specified frequency.
Section 8 Pulse Outputs
PWM outputs
(variable duty ratio
pulse outputs)
Pulse are output at the specified duty ratio. Section 9 PWM Outputs
Defining the origin Defines the machine origin by actually executing
pulse output based on the pattern specified in the
origin search parameters, using the origin proximity
input and origin input signals as conditions. (Inputs
and outputs are used in combination.)
8-5 Defining the Origin
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