Mitsubishi Electronics FR-A700, 700 Series specifications Data write timing chart, Device Name

5) Inverter CPU confirms that write command is off and turns off write completion.

4) After confirmation of write completion, write command is turned off.

Inverter Status Monitoring, Special Registers for Control

1.7.3How to write data by controlling (OFF to ON) the write command

You can write the operation mode and set frequency to the inverter, batch-clear the alarm definitions, and clear all parameters.

Device	Name	Write	Write	Data Access
No.		Command	Completion	Enable Condition
D9143	Operation mode setting write	Y23	X23	Pr.79 =0, 2
D9144	Set frequency write (RAM)	Y24	X24	PU operation mode
				(PU LED on) or CC-
	Set frequency write
D9145		Y25	X25	Link operation mode
	(E2PROM)			(PU and EXT LEDs
				flicker slowly)
D9146	Alarm definition batch clear	Y26	X26	Always
D9147	All parameter clear	Y27	X27	As set in Pr. 77

The above data are written as soon as the write completion turns on after the write command has turned from off to on.

(Alarm definition batch clear (D9146) and all parameter clear (D9147) turn on at completion of clear.)

To write the data again, the write command must be turned off once, then on again.

Data write timing chart

1) In user sequence, user	2) In user sequence, write
	command is turned on.
data is stored into write
data area (D914n).

Y2n(n=3 to 7)

Write command

X2n(n=3 to 7)

Write completion

D914n(n=3 to 7)

Write data

User data

3)Turns on when inverter CPU completes data write to inverter.

Alarm definition clear and parameter clear turn on at completion of clear.

0 written to D9150 indicates normal completion.

Any value other than 0 indicates abnormal completion.

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PLC FUNCTION

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