Hitachi SJ7002 Series Instruction Manual page 315

B–32
ModBus Mode Communications
Store New
Register Data
(ENTER
Command)
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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.
Submitting an ENTER Command:
• Write any data in all memory (of a holding register at 0900h) by the Write in Holding
Register command [06h].
Write Data
0000 Recalculate the motor constants
0001 Store the register data
Other Recalculate the motor constants and store the register data
NOTE: The ENTER command takes much time to run. You can check its progress by monitor-
ing the Data Writing signal (of a coil at 001Ah).
NOTE: The service life of the storage element of the inverter is limited (to about 100,000 write
operations). Frequent use of the ENTER command may shorten its service life.
Description