SJ700-2 Instruction Manual NT204DX - Hitachi America, Ltd.

Chapter 4 Explanation of Functions
(5) Enter command (storing the updates of register data)
Neither the command (06h) to write data to a register nor the command (10h) to write data to multiple
registers can store the updates they made in the internal memory of the inverter. Turning the inverter
power off without storing the updates deletes them and restores the original register settings. If you intend
to store register updates in the internal memory of the inverter, issue the Enter command as described
below.
If you have updated a control constant, you must recalculate the motor constants. In such cases, use
register "0900h" for recalculation as described below.
How to issue the Enter command
With the command (06h) to write data to registers, write all register data to the internal memory. To
recalculate the motor constants, use the same command to write the data shown in the following table to
register "0900h":
Data to be written
Description
0000 Recalculating the motor constants
0001 Storing the register data
Other than the above Recalculating the motor constants and storing the register data
Notes:
- Execution of the Enter command requires considerable time. To check whether data writing is in
progress, monitor the status of the signal (coil No. 001Ah) that indicates whether data writing is in
progress.
- The internal memory device of the inverter is subject to a limitation on the number of rewriting operations
(about 100,000 times). Frequent use of the Enter command may shorten the inverter life.
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