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 o f the Enter commands.
♦ 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.
Table C.6 Enter Command Types
Register No.
Description
0900H
Simultaneously writes data into the EEPROM (non-volatile m emory) o f the drive and enables the data in RAM. Parameter changes remain after cycling power.
0910H
Writes data in the R AM only. Parameter changes are lost when the drive is shut off.
Note: Lim it the num ber o f times writing to the EEPRO M because the EEPRO M can only be w ritten to 100,000 times. The Enter
comm and registers are w rite-only and if these registers are read, the register address will be invalid (Error code: 02H). A n Enter
comm and is not required w hen reference or broadcast data are sent to the drive.
♦ Parameter H5-11 and the Enter Command
When changing parameters via MEMOBUS/Modbus, H5-11 determines whether an Enter command is necessary to
activate parameter changes in the drive.
H5-11 Settings
H5-11 = 0
H5-11 = 1
H ow parameter settings are enabled
W hen the Enter command is received from the master.
A s soon as the value is changed.
Upper/lower limit check
Upper/lower limit check is performed, taking the settings o f related
parameters into account.
Checks only the upper/lower limits o f the parameters that were
changed.
Default value o f related parameters
N ot affected. The settings o f related parameters remain unchanged.
They must be changed manually if needed.
Default settings o f related parameters are changed automatically.
Error handling when setting multiple
parameters
Data is accepted even if one setting is invalid. The invalid setting w ill
be discarded. N o error m essage occurs.
Error occurs if only one setting is invalid. A ll data that was sent are
discarded.
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