Enter Command; Enter Command Types; Enter Command Settings When Upgrading The Drive - YASKAWA V1000 Technical Manual

C.11 Enter Command
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.
u

Enter Command Types

The drive supports two types of Enter commands as shown in the table below. An Enter command is enabled by writing
0 to register 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.
u

Enter Command Settings when Upgrading the Drive

When replacing earlier Yaskawa drive models with V1000 and keeping the MEMOBUS/Modbus communications settings,
parameter H5-11 needs to be set in accordance with how the Enter command functions in the older drive. H5-11 determines
if an Enter command is needed or not in order to activate parameter changes in the drive.
• If upgrading from a G7 or F7 series drive to V1000, set parameter H5-11 to 0.
• If upgrading from a V7 series drive to V1000, set parameter H5-11 to 1.
n H5-11 and the Enter Command
H5-11 Settings
Drive being replaced
How parameter settings are
enabled
Upper/lower limit check
Default value of related
parameters
Error handling when setting
multiple parameters
428
Table C.6 Enter Command Types
H5-11 = 0
G7, F7
When the Enter command is received from the master. As soon as the value is changed.
Upper/lower limit check is performed taking 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.
YASKAWA ELECTRIC SIEP C710606 16C YASKAWA AC Drive – V1000 Technical Manual
Description
V7
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.
H5-11 = 1