C.10 Enter Command - YASKAWA U1000 Series 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
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.
512
Table
Table C.7 Enter Command Types
Description
YASKAWA ELECTRIC SIEP C710636 03A YASKAWA U1000 Technical Manual
C.7. An Enter command is enabled by writing 0 to