Data That Are Read By Controlling (Off To On) The Read Command - Mitsubishi Electric FR - F700 Programming Manual

1.10.2 Data that are read by controlling (OFF to ON) the read
command
You can read the operation mode and set frequency of the inverter.
Device
No.
D9140 Operation mode setting read
D9141 Set frequency read (RAM)
D9142 Set frequency read (EEPROM)
Data are stored into the above data devices as soon as the read completion turns from
off to on after the read command has turned from off to on.
If the read command remains on, data is not refreshed. (Data is not updated.)
Turn the device off once, then on again to refresh data.
Data read timing chart
1) Read command is turned
on in user sequence.
Y2n(n=0 to 2)
Read command
X2n(n=0 to 2)
Read completion
D914n(n=0 to 2)
Read data
User sequence
processing
(1) Operation mode setting read (D9140)
Data Setting
H0000
H0001
H0002
REMARKS
When the Pr. 79 Operation mode selection setting is other than "0", the operation mode is as
set. However, when Pr. 79 = "3" or "4", the operation mode is "H0002" (PU operation mode).
<Operation mode setting read program example>
The following program reads the operation mode data to D0.
Operation mode read setting request
Name
3) In user sequence, ON of read completion
is confirmed and data is read from special
register and processed.
2) Inverter CPU stores inverter data
into special register and turns on
read completion.
Operation Mode
NET operation mode
External operation mode
PU operation mode
Inverter status monitoring, special registers
Read Write
Command Completion
Y20 X20
Y21 X21
Y22 X22
4) After completion of read,
read command is turned off.
5) Inverter CPU confirms that
read command is off and
turns off read completion.
for control
Data Access
Enable Condition
Always
Turns on operation mode
read request pulse.
Stores operation mode data to D0
when operation mode setting read
completion signal turns on.
Turns on operation mode setting
read command. (Until operation
mode setting read completion
signal turns on)
1
27