Omron FQM1-CM001 ユーザーズマニュアル

The following timing chart shows the operation of the program as it is exe-
cuted.

(1) Counting continues even while the interrupt task is being executed.

(2) The input interrupts are masked after this point.

Interval timers can be used to perform high-speed, high-precision timer inter-
rupt processing. The Motion Control Modules and Coordinator Module are
equipped with one interval timer each. 

There are two modes for interval timer operation.

• One-shot Mode

In one-shot mode, the interrupt is executed just once when the timer times
out.

• Scheduled Interrupt Mode

In scheduled interrupt mode, the timer is reset to the SV each time it times
out so the interrupt is repeated regularly at a fixed interval.

1.

Interrupt Mode

• Determine whether the timer will operate in one-shot mode or scheduled

interrupt mode.

2.

Ladder Programming

• Use the STIM(980) instruction to set the timer SV and start the timer in

one-shot or scheduled interrupt mode.

• Create the interrupt task program.

10 counts

10 counts

20 counts

CIO 0000.00

Interrupt task 000

CIO 0000.01

Interrupt task 001

CIO 0002.00

(See note 1.)

(See note 1.)

(See note 2.)

FQM1-CM001

Coordinator Module

FQM1-MMP21

Motion Control Module for Pulse I/O

FQM1-MMA21

Motion Control Module for Analog I/O