Omron J7 series, User Manual

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115
Communications Error Codes
Chapter 7-8
7-8 Communications Error Codes
The Inverter will detect a communications error if normal communications fail
or a message data error occurs.
The Inverter returns a response that consists of the Slave address, function
code with the MSB set to 1, error code, and CRC-16 check block when the
communications error is detected.
When the Master receives an error code, refer to the following table for
troubleshooting and remedying the error.
Errors and Remedies
Error code Name Probable cause Remedy
01 Hex Function code error The function code is set to a code other than 03, 08, or
10 Hex. Check and correct the
function code.
02 Hex Register number error The specified register number has not been registered. Check and correct the
register number.
An attempt was made to read the register of the Enter
command.
03 Hex Data number error The number of write or read registers is not within a
range from 1 to 16 (0001 and 0010 Hex). Check and correct the
number of registers or
the number of bytes.
The number of registers of the DSR message multiplied
by two does not coincide with the number of bytes of the
attached data.
21 Hex Data setting error The write data is not within the permissible range. Check the display on
the Digital Operator and
correct the data.
The data set is illegal and causes an OPE (OPE1
through OPE9) error.
22 Hex Write mode error The Inverter in operation received a DSR message to
write data to a parameter that prohibits any data to be
written while the Inverter is running. Write the data after
stopping the Inverter.
The Enter command was received while the Inverter is
running.
The Inverter detecting UV received a DSR message to
write data. Write the data after
restoring the UV (main
circuit (main circuit
undervoltage) status.
The Inverter detecting UV received the Enter command.
The Inverter detecting F04 for an initialization memory
fault received a DSR message other than that for
parameter initialization (with n01 set to 8 or 9). Turn the Inverter OFF
and ON after parameter
initialization with n01
set to 8 or 9.
The Inverter processing data written received a DSR
message to write data. Wait for an elapse
period equivalent to 24
bits plus a minimum of
10 ms to issue the
message after a
response is received
from the Inverter.
A DSR message to a read-only register was received. Check and correct the
register number.