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Inverter Parameter Read/Write Method
4.8.1 Reading the inverter parameters
When the inverter parameter read command is turned from off to on, the data of all the
target parameters (refer to pages 110, 111) are stored into the data registers and the
read completion is turned on.
As soon as the parameter read completion turns from off to on, the corresponding data
can be read.
Inverter parameter data read timing chart
Command Device No.
Parameter read command (RAM) Y28
Parameter read completion (RAM) X28
Parameter read command (E
2
PROM)
Y2A
Parameter read completion (E
2
PROM)
X2A
CAUTION
Since the inverter parameters given on page 110 are all read (batch-read), start read
processing after setting all data to D50-D93. Read cannot be performed for one
parameter.
Y28(Y2A)
Parameter read
command
X28(X2A)
Parameter read
completion
D50 to D93
Parameter
read data
User sequence
processing
Inverter
parameter
1) Read command is turned
on in user sequence.
3) In user sequence, ON of read completion
is confirmed and data are read from data
registers D50-D93 and processed.
4) After completion of read,
read command is turned off.
2) Inverter CPU stores inverter parameter
data into data registers D50-D93, and
turns on read completion.
5) Inverter CPU confirms that read
command is off and turns off
read completion.