Mitsubishi Electric FX3G SERIES Programming Manual page 449

Programmable controllers

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Table of Contents

Series Programmable Controllers

Programming Manual - Basic & Applied Instruction Edition

Extension function

1. 16-byte serial output

The number of output characters varies depending on the ON/OFF status of the special auxiliary relay M8027.

While M8027 is OFF, 8-byte serial output (fixed to 8 characters) is executed. While M8027 is ON, 16-byte serial

output (1 to 16 characters) is executed.

In the example shown below, up to 16 characters (1 character/byte) are output to the display unit (external display unit

, for example).

It is supposed that data to be displayed is stored in hexadecimal codes in D300 to D307.

Connection example of the external display unit A6FD

The PLC shown in the example below is the FX

COM1 Y020 Y021 Y022 Y023 Y024 Y025 Y026 Y027 COM2 Y030

D 0 D 1 D 2 D 3 D 4 D 5 D 6 D 7

External display unit A6FD

A6FD was distributed only inside Japan, however, production of the external display unit A6FD was

terminated in November 2002.

Timing chart (while M8027 is ON)

Drive input X000

Data Y020 to Y027

Execution flag Y031

Execution complete flag M8029

* If "H00 (NULL code)" is contained in the data (16 characters), the character just before "H00 (NULL code)"

is handled as the last character.

Related devices

Cleared when the PR mode is changed from RUN to STOP.

Operation is started when X000 turns ON from OFF.

8-byte serial output (fixed to 8 characters)

16-byte serial output (1 to 16 characters)

15 External FX I/O Device – FNC 70 to FNC 79

15.8 FNC 77 – PR / Print (ASCII Code)

-16EYT (sink output) connected to the

T: Operation cycle

or interrupt time

Fx3u series Fx3uc series