Functions; Input Interrupts - Omron CPM1A Datasheet

Functions

Input Interrupts

There are two input interrupts in the CPM1A 10-point I/O CPU and four in the 20-, 30-, and 40-point I/O CPUs. Input interrupts are
available in two modes.
10-point I/O CPU
Input Interrupt Mode
If an input interrupt occurs, the regular program shuts down irrelevant of the cycle time, and the interrupt processing program is
executed immediately.
Regular program
Input interrupt
Counter Mode
When the number of external signals counted at high speed reaches a specified number of counts, the regular program shuts down,
and the interrupt processing program is executed at fixed counts. The count can be set between 0 and 65535.
Input interrupt
16
20-, 30-, and 40-point I/O CPU
Interrupt program
Regular program
Counter setting
Application Example:
Cutting Metal Sheets to Specified Lengths
The proximity sensor detects the edge of a
metal plate to operate the cutter. Metal sheets
can be cut continuously to the specified
lengths at a high speed.
Cutter
Regular program
Regular program
Interrupt program
Metal sheets
Cutter
operation
Conveyor
signal
Proximity
sensor
Input
interrupt CPM1A