Mitsubishi Electric FR-E800 Instruction Manual (Communication page 128

 Error code
When the end code is other than "0" (failed completion), one of the error codes shown in the following table will be stored.
Error code
H4031 The device outside of the range is specified.
H4080 Request data fault
The network with the No. set in the routing parameter does not exist.
H4A01
(The destination network No., destination station No., or destination unit I/O No. is different from that of the target inverter.)
HC059 The command or subcommand is specified incorrectly. Or, an unspecified command is received.
HC05B The inverter cannot read/write data from/to the specified device.
HC05C The request message has an error.
The requested operation has an error.
HC060
Example) Data is specified incorrectly for the bit device.
HC061 The request data length is inconsistent with the number of data.
HCEE1 The request message size exceeds the allowable range.
HCEE2 The response message size exceeds the allowable range.
Fault indications.
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2. Ethernet Communication
2.10 SLMP
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