Mitsubishi Electric FX3G SERIES Programming Manual page 783

Programmable controllers

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Table of Contents

Series Programmable Controllers

Programming Manual - Basic & Applied Instruction Edition

In an SFC program for selecting large or small products and judging products as either accepted or rejected, selective

branches and recombination are adopted as shown in the figure below.

Ladder block

Initial pulse

Upper limit switch

Right limit switch

(small bucket)

Lower limit switch

Upper limit switch

Left limit switch

switch: ON (small ball)

35 SFC Program and Step Ladder

When a product is small (when X002

turns ON), the left flow is valid.

When a product is large, the right flow is

switch: OFF (large ball)

Upper limit switch

Right limit switch

(large bucket)

The ON status is transferred to the

recombination state relay S30 when

X004 turns ON in the case of a small

product, or when X005 turns ON in the

case of a large product.

When the special auxiliary relay

M8040 described later is driven, all

transfers to any state relay are

In each of the state relays S24, S27

and S33, an interlock contact is

connected in series respectively to

the rightward movement output Y003

and leftward movement output Y004.

35.1 SFC Program

Fx3u series Fx3uc series