Mitsubishi Electric FX3G SERIES Programming Manual page 342

Programmable controllers

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Table of Contents

Series Programmable Controllers

Programming Manual - Basic & Applied Instruction Edition

Explanation of function and operation

1. 16-bit operation (REF and REFP)

When refreshing outputs (Y)

"n" points are refreshed from the specified output device

- When this instruction is executed, the output latch memory is refreshed to the output status in the specified

Image memory output (Y)

REF instruction (executed)

END instruction

processing (output)

Output refresh

REF instruction + END processing

Only END processing

When refreshing inputs (X)

"n" points are refreshed from the specified input device

- If the input information is turned ON approximately 10 ms (response delay time of the input filter) before the

instruction is executed, the input image memory turns ON when the instruction is executed.

- In X000 to X017

*1 X000 to X007 in the FX

, the response delay time of the input filter can be changed.

→ For details, refer to "13.1.1 What should be understood before using the REF instruction".

13 High-Speed Processing – FNC 50 to FNC 59

. ("n" must be a multiple of 8.)

K8 (H8) or K16 (H10): Up to K256 (H100) (which is a multiple of 8)

Y000, Y010 or Y020: Up to the final output number

(whose least significant digit number is "0")

Improved response

. ("n" must be a multiple of 8.)

K8 (H8) or K16 (H10): Up to K256 (H100) (which is a multiple of 8)

X000, X010 or X020: Up to the final input number

(whose least significant digit number is "0")

13.1 FNC 50 – REF / Refresh

Improved response

Fx3u series Fx3uc series