Enter Command - YASKAWA iQpump Micro CIMR-PW Series User Manual

C.11 Enter Command
When writing parameters to the drive from the PLC using MEMOBUS/Modbus communication it depends on the setting of
parameter H5-11 if an Enter command must be used to enable these parameters or not. This sections explains Enter commands.
Enter Command Types
u
The drive supports two types of Enter commands as shown in
number 0900H or 0910H. These registers can be written to only. An error will occur if the user attempts to read from these
registers.
Register No.
Writes data into the EEPROM (non-volatile memory) of the drive and enables the data in RAM at the same time. Parameter
0900H
changes remain even if the power supply is cycled.
0910H Writes data in the RAM only. Parameter changes are lost when the drive is shut off.
Note: 1. Because the EEPROM can be written to a maximum of 100,000 times, refrain from writing to the EEPROM too often. The Enter
command registers are write-only. Consequently, if these registers are read, then the register address will be invalid (Error code: 02H).
An Enter command is not required if reference or broadcast data are sent to the drive.
2. Parameter data cannot be written to EEPROM during undervoltage, even using 0900H.
3. If undervoltage occurs when a making several parameter changes issued with a single ENTER command, the writing process may be
aborted before all of the new changes have been written. Because all of the data has not yet been written, the EEPROM data error
"CPF06" will be displayed the next time power to the drive is cycled. To prevent this problem, wait approximately 5 seconds after
issuing the ENTER command before shutting off drive power.
H5-11 and the Enter Command
n
H5-11 Settings
Drive being replaced
How parameter settings are enabled When the Enter command is received from the master.
Upper/lower limit check
Default value of related parameters
Error handling when setting
multiple parameters
YASKAWA TOEP YAIQPM 03B YASKAWA AC Drive - iQpump Micro User Manual
Table C.6 Enter Command Types
H5-11 = 0
G7, F7
Upper/lower limit check takes the settings of related
parameters into account.
Not affected. The settings of related parameters remain
unchanged. They must be changed manually if needed.
Data is accepted even if one setting is invalid. The invalid
setting will be discarded. No error message occurs.
Table C.6. An Enter command is enabled by writing 0 to register
Description
V7
As soon as the value is changed.
The upper/lower limit of the changed parameter is
checked only.
The default settings of related parameters are changed
automatically.
Error occurs if only one setting is invalid. All data sent
are discarded.
C.11 Enter Command
H5-11 = 1
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