Mitsubishi Electric FX3G SERIES Programming Manual page 335

Programmable controllers

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Table of Contents

Series Programmable Controllers

Programming Manual - Basic & Applied Instruction Edition

Program example

1. Displaying a fault number using an annunciator

When the program for external fault diagnosis shown below is created and the content of D8049 (smallest state relay

number in the ON status) is monitored, the smallest state relay number in the ON status from S900 to S999 is

If two or more faults are present at the same time, the next smallest fault number is displayed after the fault of the

smallest fault number is cleared.

Annunciator ON

Fault display

12 Data Operation – FNC 40 to FNC 49

12.7 FNC 46 – ANS / Timed Annunciator Set

When M8049 turns ON, monitoring becomes valid.

If the forward end detection input X000 does not turn

ON within 1 second after the forward movement output

Y005 is driven, S900 turns ON.

If both the upper limit input X001 and the lower limit

input X002 are OFF for 2 seconds or more due to a dog

error, S901 turns ON.

The switch X004 is set to ON in one operation cycle of

the machine. If the switch X004 is not set to ON while

the continuous operation mode input X003 is ON in the

machine whose tact time is less than 10 seconds, S902

When one among S900 to S999 turns ON, M8048 turns

ON and the fault display output Y006 turns ON.

A state relay which was set to ON by the external fault

diagnosis program is set to OFF by the reset button

X007. Every time X007 is set to ON, an operation state

relay in the ON status with the smallest device number

is reset (set to OFF) in turn.

Fx3u series Fx3uc series