Enter Command; Enter Command Types; H5-11 And The Enter Command - YASKAWA E1000 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 if an Enter command must be issued to enable these parameters or not. This sections the types of Enter
commands and how they work.

◆ 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 only be written to. 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 changes remain even if the power
0900H
supply is cycled.
0910H Writes data in the RAM only. Parameter changes are lost when the drive is shut off.
Note: 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.

◆ H5-11 and the Enter Command

An Enter command is not required when writing registers 0000H to 001F. Changes to those registers take effect
immediately, independent of the setting in parameter H5-11.
H5-11 Settings
How parameter settings are enabled
Upper/lower limit check
Default value of related parameters
Error handling when setting multiple
parameters
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Table C.6 Enter Command Types
H5-11 = 0
When the Enter command is received from the master.
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 C710616 35D YASKAWA AC Drive E1000 Technical Manual
Description
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.
H5-11 = 1