YASKAWA U1000 iQpump Drive, Техническое руководство

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C.10 Enter Command
When writing parameters to the drive from the PLC using MEMOBUS/Modbus communication, parameter H5-11 determines
whether an Enter command must be issued to enable these parameters. This section describes the types and functions of the
Enter commands.
u
Enter Command Types
The drive supports two types of Enter commands as shown in Table C.7 . An Enter command is enabled by writing 0 to register
numbers 0900H or 0910H. It is only possible to write to these registers; attempting to read from these registers will cause an
error.
Table C.7 Enter Command Types
Register No. Description
0900H
Simultaneously writes data into the EEPROM (non-volatile memory) of the drive and enables the data in RAM. Parameter
changes remain after cycling power.
0910H Writes data in the RAM only. Parameter changes are lost when the drive is shut off.
Note: The EEPROM can only be written to 100,000 times, so it is recommended to limit the number of times writing to the EEPROM. The Enter
command registers are write-only and if these registers are read, the register address will be invalid (Error code: 02H). An Enter command
is not required when reference or broadcast data are sent to the drive.
C.10 Enter Command
YASKAWA ELECTRIC SIEP C710636 04D U1000 Industrial MATRIX Drive Technical Manual 643
C
MEMOBUS/Modbus Communications