Interrupt Input - IDEC MICROSmart FC6A Series User Manual

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Interrupt Input

When a quick response to an external input is required, such as positioning control, the interrupt input can call a subroutine to

execute an interrupt program.

Six inputs I0, I1, I3, I4, I6, and I7 can be designated to execute interrupt at a rising and/or falling edge of input pulses. When an

interrupt is initiated by inputs I0, I1, I3, I4, I6 and I7, program execution immediately jumps to a predetermined label number

stored in special data registers D8215, D8032 through D8035, and D8214 respectively. The Function Area Settings dialog box is

used to designate inputs I0, I1, I3, I4, I6 and I7 as an interrupt input, normal input, high-speed counter input, or catch input.

Normal input signals to input terminals are read when the END instruction is executed at the end of a scan.

Since these settings relate to the user program, the user program must be downloaded to the FC6A Series MICROSmart after

changing any of these settings.

Interrupt Input Terminals, Special Data Registers, and Special Internal Relays for Interrupt Inputs

All-in-One CPU module

External Input

Interrupt Input

Special Data Register

(Jump Destination

Special Internal Relay

(Interrupt Input

Special Internal Relay

(Interrupt Input Edge)

*1 Can be used as a normal input.

Plus CPU module

External Input

Interrupt Input

Special Data Register

(Jump Destination

Special Internal Relay

(Interrupt Input

Special Internal Relay

(Interrupt Input Edge)

*1 Can be used as a normal input.

*2 Can be used only with the Plus 32-I/O type.

UNCTIONS AND

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