C.10 Enter CommandWhen writing parameters to the drive from the PLC using MEMOBUS/Modbus communication, parameter H5-11 determineswhether an Enter command must be issued to enable these parameters. This section describes the types and functions of theEnter commands.u Enter Command TypesThe drive supports two types of Enter commands as shown in Table C.7. An Enter command is enabled by writing 0 to registernumbers 0900H or 0910H. It is only possible to write to these registers; attempting to read from these registers will cause anerror.Table C.7 Enter Command TypesRegister No. Description0900H Simultaneously writes data into the EEPROM (non-volatile memory) of the drive and enables the data in RAM. Parameterchanges remain after cycling power.0910H Writes data in the RAM only. Parameter changes are lost when the drive is shut off.Note: The EEPROM can only be written to 100,000 times, so it is recommended to limit the number of times writing to the EEPROM. The Entercommand registers are write-only and if these registers are read, the register address will be invalid (Error code: 02H). An Enter commandis not required when reference or broadcast data are sent to the drive.u Enter Command Settings when Upgrading the DriveWhen replacing previous Yaskawa drive models with the P1000 and keeping the MEMOBUS/Modbus communicationssettings, set parameter H5-11 in accordance with the Enter command configuration in the older drive. H5-11 determineswhether an Enter command is necessary to activate parameter changes in the drive.• If upgrading from a G7, F7, or P7 series drive to a P1000, set parameter H5-11 to 0.• If upgrading from a V7 series drive to a P1000, set parameter H5-11 to 1.n H5-11 and the Enter CommandAn enter command is not required when writing registers 0000H to 001FH. Changes to those registers take effect immediately,independent of the setting in parameter H5-11.H5-11 Settings H5-11 = 0 H5-11 = 1Drive being replaced G7, F7, P7 V7How parameter settings are enabled When the Enter command is received from the master. As soon as the value is changed.Upper/lower limit check Upper/lower limit check is performed, taking the settingsof related parameters into account. Checks only the upper/lower limits of the parameters thatwere changed.Default value of related parameters Not affected. The settings of related parameters remainunchanged. They must be changed manually if needed. Default settings of related parameters are changedautomatically.Error handling when settingmultiple parameters Data is accepted even if one setting is invalid. The invalidsetting will be discarded. No error message occurs. Error occurs if only one setting is invalid. All data thatwas sent are discarded.C.10 Enter Command536 YASKAWA SIEP YAIP1U 01C AC Drive - P1000 Technical Manual
