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îš„ENTER Command
When writing parameters to the Inverter from the PLC using MEMOBUS communications, the parameters are
temporarily stored in the parameter data area of the Inverter. To enable these parameters in the parameter data
area the ENTER command must be used.
There are two types of ENTER commands:
• ENTER commands that enable parameter data in RAM only (changes will be lost after power loss)
• ENTER commands that write data into the EEPROM (non-volatile memory) of the Inverter and enable the
data in RAM at the same time.
The following table shows the ENTER command data. ENTER command data can only be written.
The ENTER command is enabled by writing 0 to register number 0900H or 0910H.
îš„Fault Codes
The following table shows MEMOBUS communications fault codes.
Register Address. Contents
0900H Write parameter data to EEPROM, RAM is refreshed
0910H Parameter data are not written to EEPROM, but refreshed in RAM only.
INFO
• The maximum number of times you can write to EEPROM is 100,000. Do not frequently execute ENTER com-
mands (0900H) that write into EEPROM.
• The ENTER command registers are write-only. Consequently, if these registers should be read out, the register
address will become invalid (Fault code: 02H).
• An ENTER command is not required if reference or broadcast data are sent to the inverter.
Fault Code Contents
01H
Function code fault
A function code other than 03H, 08H, or 10H has been set by the PLC.
02H
Invalid register number fault
• The register address you are attempting to access is not recorded anywhere.
• With broadcast sending, a start address other than 0001H, or 0002H has been set.
03H
Invalid quantity fault
• The number of data packets (register content) being read or written is outside the range of 1 to 16.
• In write mode, the number of data bytes in the message is not No. of packets x 2.
21H
Data setting fault
• A simple upper limit or lower limit fault has occurred in the control data or when writing parameters.
• When writing parameters, the parameter setting is invalid.
22H
Write mode fault
• Attempting to write parameters to the inverter during operation.
• Attempting to write via ENTER commands during operation.
• Attempting to write parameters other than A1-00 to A1-05, E1-03, or 02-04 when warning alarm CPF03
(defective EEPROM) has occurred.
• Attempting to write read-only data.
23H
Writing during DC bus undervoltage (UV) fault
• Writing parameters to the inverter during UV (DC bus undervoltage) alarm.
• Writing via ENTER commands during UV (DC bus undervoltage) alarm.
24H
Writing fault during parameters processing
Attempting to write parameters while processing parameters in the Inverter.
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