Enter Command; Enter Command Types; Enter Command Settings When Upgrading The Drive - YASKAWA AC Drive-A1000 Technical Manual

C.10 Enter Command
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 the table below. An Enter command is enabled by writing 0 to
register numbers 0900H or 0910H. These registers can only be written to; attempting to read from these registers will cause
an error.
Register No.
Simultaneously writes data into the EEPROM (non-volatile memory) of the drive and enables the data in RAM. Parameter
0900H
changes remain after cycling power.
0910H Writes data in the RAM only. Parameter changes are lost when the drive is shut off.
Note: Limit the number of times writing to the EEPROM because the EEPROM can only be written to 100,000 times. 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.
u

Enter Command Settings when Upgrading the Drive

When replacing earlier Yaskawa drive models with the A1000 and keeping the MEMOBUS/Modbus communications settings,
set parameter H5-11 in accordance with the Enter command configuration in the older drive. H5-11 determines whether an
Enter command is necessary to activate parameter changes in the drive.
• If upgrading from a G7 or F7 series drive to an A1000, set parameter H5-11 to 0.
• If upgrading from a V7 series drive to an A1000, set parameter H5-11 to 1.
n H5-11 and the Enter Command
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
492
Table C.6 Enter Command Types
H5-11 = 0
G7, F7
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.
Description
V7
As soon as the value is changed.
Checks only the upper/lower limits of the parameters that
were changed.
Default settings of related parameters are changed
automatically.
Error occurs if only one setting is invalid. All data that
was sent are discarded.
YASKAWA ELECTRIC SIEP C710616 31B YASKAWA AC Drive – A1000 Technical Manual
H5-11 = 1