Omron FQM1-MMP21, FQM1-CM001, FQM1-MMA21 Input Interrupts, Section, Counter Mode Procedure, 1,2,3

Input Interrupts Section 7-3

Counter Mode Procedure

1,2,3...

1.Determine which input interrupt number will be used.

2.Determine the initial SV for the decrementing counter.

3.Wire the input.

Input	Allocated input bit	Interrupt task number
External interrupt input 0	CIO 0000.00	000
External interrupt input 1	CIO 0000.01	001
External interrupt input 2	CIO 0000.02	002
External interrupt input 3	CIO 0000.03	003

4.Make the necessary System Setup settings.

•Set the Interrupt Input Settings (set whether an interrupt will be generated when the input turns ON, OFF, or both).

Note The default input setting is for a normal input.

5.Create the necessary ladder programming.

•Use the MSKS(690) instruction (SET INTERRUPT MASK) to refresh the counter’s SV in counter mode.

• Create the interrupt task program.

Interrupt 0

input

1

2

3

CIO 0000.00

CIO 0000.01

CIO 0000.02

CIO 0000.03

Counter 0, 1 kHz

Counter 1, 1 kHz

Counter 2, 1 kHz

Counter 3, 1 kHz

System Setup

Interrupt input settings

Interrupt input (counter mode)

	Ladder program
MSKS			Interrupt control
			Refresh PV
			(Decrementing)
		Change SV (Decrementing)
				Counter SV
			Counter 0		A520
			Counter 1		A521
			Counter 2		A522
			Counter 3		A523
			(Auxiliary Area)

Refresh PV (once each cycle)

Counter PV

Counter 0 A524

Counter 1 A525

Counter 2 A526

Counter 3 A527

(Auxiliary Area)

Interrupt generated.

See note.

Execute specified task.

END

Note: Interrupt used only when the counter counts out.

144