Omron VARISPEED E7 User Manual page 220

ENTER Command
When writing parameters to the Inverter from the PLC using MEMOBUS communications, the parameters are
temporarily stored in the parameter data area in the Inverter. To enable these parameters the ENTER command
must be used.
There are two types of ENTER commands: ENTER commands that enable parameter data in RAM, and
ENTER commands that write data to EEPROM (non-volatile memory) in the Inverter at the same time as
enabling the data in RAM.
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.
Register No.
0900H Write parameter data to EEPROM, RAM is refreshed
0910H Parameter data are not written to EEPROM, but refreshed in RAM only.
The maximum number of times you can write to EEPROM is 100,000. Do not frequently execute
ENTER commands (0900H) that write into EEPROM.
The ENTER command registers are write-only. Consequently, if these registers should be read out,
IMPORTANT
the register address will become invalid (Error code: 02H).
Communications Error Codes
The following table shows MEMOBUS communications error codes.
Error Code
Function code error
01H
A function code other than 03H, 08H, or 10H has been set by the PLC.
Invalid register number error
02H • 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.
Invalid quantity error
03H • 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.
Data setting error
21H • A simple upper limit or lower limit error has occurred in the control data or when writing parameters.
• When writing parameters, the parameter setting is invalid.
Write mode error
• Attempting to write parameters to the inverter during operation.
• Attempting to write via ENTER commands during operation.
22H
• Attempting to write parameters other than A1-00 to A1-05, E1-03, or o2-04 when warning alarm CPF03
(defective EEPROM) has occurred.
• Attempting to write read-only data.
Writing during DC bus undervoltage (UV) error
23H • Writing parameters to the inverter during UV (DC bus undervoltage) alarm.
• Writing via ENTER commands during UV (DC bus undervoltage) alarm.
Writing error during parameters processing
24H
Attempting to write parameters while processing parameters in the Inverter.
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