Enter Command; Fault Codes - Omron VARISPEED F7 User Manual

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.
Register Address.
INFO

Fault Codes

The following table shows MEMOBUS communications fault codes.
Fault Code
01H
6
02H
03H
21H
22H
23H
24H
96
6-
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 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.
Function code fault
A function code other than 03H, 08H, or 10H has been set by the PLC.
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.
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.
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.
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.
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.
Writing fault during parameters processing
Attempting to write parameters while processing parameters in the Inverter.
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