Справочник Пользователя для Mitsubishi Electronics Q64TCTTN

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This function allows buffer memory data to be stored in E

2

PROM and backed up.

The backed-up data is transferred from E

2

PROM to the buffer memory when the power is turned off and on or the CPU 

module is reset and the reset is cancelled. Therefore, temperature can be controlled without writing data when the 
power is turned off and on or the CPU module is reset and the reset is cancelled.

Refer to the buffer memory assignment list.

This function can be used to back up data directly written in the buffer memory using the PID constants set with 

the auto tuning function and the programming tool. When data is written to E

2

PROM and the power is turned off 

and on or the CPU module is reset and the reset is cancelled, the buffer memory setting value is not required to 
be set again.

For the function that allows PID constants to be automatically backed up after auto tuning, refer to 

To write data to E

2

PROM, turn off and on E

2

PROM backup instruction (Yn8).

When data write to E

2

PROM is completed, E

2

PROM write completion flag (Xn8) turns on.

If data write to E

2

PROM does not complete, E

2

PROM write failure flag (XnA) turns on.

Change the settings for buffer memory areas when E

2

PROM write completion flag (Xn8) is off.

Read

Q64TCN

OS

CPU module

1. E

2

PROM backup 

    instruction (Yn8): ON 
    (Write instruction)

3. E

2

PROM write

    completion flag (Xn8): 
    ON (completed)

Buffer memory

data

2. Write

E

2

PROM

When the power is
switched from off to
on or at reset