Mitsubishi Electric A800 Programming Manual page 40

Writing operation mode settings (SD1143)
Data content:
Data content Operation mode
H0000 NET operation mode
H0001 External operation mode
H0002 PU operation mode
The method for changing operation modes is shown in the following chart when Pr.79 Operation mode selection = "0".
When Pr.79 = "2", the chart is as follows.
NOTE
• When Pr.79  "0", the mode is fixed.
There are no limiting conditions by the command source for operation mode transitions. The operation mode may not be
changed depending on the settings of parameters (Pr.79, Pr.340, etc.).
When the operation mode settings are completed normally, write completion signal (X23) turns ON at the same time as
SD1150 is set to "0".
Writing any setting value other than H0000 to H0002 or executing writing while the inverter is operating causes the write
completion signal (X23) to turn ON at the same time as setting HFFFF in SD1150, resulting in error completion.
If an error completion occurs, the operation mode is not changed.
<Program example of writing operation mode settings>
The following description is of the program that changes the operation mode to NET operation mode.
Operation mode write setting request
SD1150
SD1150
Setting frequency write (RAM) (SD1144)
The content of SD1144 is written to the RAM as setting frequency. Its increment is 0.01 Hz.
(For example, 60.00 Hz is written as "6000".)
If the rotation rate is set, the increment is 1 r/min or 0.1 r/min according to the setting value of Pr.811. (FR-A800 series only)
The frequency can be set within the range of 0 to 12000 (0 to 120.00 Hz).
When frequency settings are written normally, the write completion signal (X24) turns ON at the same time as SD1150 is set
to "0".
Executing writing with any value that is outside the specified range causes the write completion signal (X24) to turn ON at the
same time as setting HFFFF in SD1150, resulting in error completion. If an error completion occurs, the setting frequency is
not changed.
Special registers to monitor and control inverter status
NET operation External
H0001
mode (CC-Link) operation mode
H0000
H0002
H0000
NET
H0001
operation mode
H0000
Normal write
Abnormal write
SD1143
PU operation
H0002
mode
H0001
External
operation mode
Turns ON operation mode
setting write request pulse.
Check whether operation mode
setting write completion signal
turned ON to judge whether write
was performed normally or not.
Stores 0 (NET operation mode)
to SD1143 and turns ON operation
mode setting write command.
(Until completion signal turns ON)
39
PLC Function
1