E-100
FX Series PLC User's Manual - Data Communication Edition
Inverter Communication
11 Troubleshooting
11.6 Error Codes
11.6 Error Codes
When a communication error occurs, the error flag turns ON, and the error code is stored in the data register.
For error codes, refer to the table below.
1. Error storing devices
2. Error code list
FX Series Error flag Data register for storing error code
FX2N,FX2NC
M8156 D8156
FX3U,FX3UC
ch1 ch2 ch1 ch2
M8152 M8157 D8152 D8157
Error
code
Contents of error
Inverter
operation
0 Normal end (No Errors)
1 ⎯ Inverter did not give response.
2 Timeout error Sending from inverter was aborted midway.
3 Station number error Unspecified station gave response.
4 Sum check error The sum of data sent back by the inverter did not match.
5
Parameter number
specification error
In writing or reading a parameter, an improper parameter number
was specified.
At this time, error code (K6706) is set to D8067.
K6706: Out-of-range data value for operand in applied instruction.
6
Communication port
occupied by another
communication type
Because the port is being used for another communication type, it
cannot be used for communication with the inverter.
At this time, error code (K6762) is set to D8067.
K6762: The port specified in inverter communication instruction is
being used by another communication type.
256 Computer NAK error
Inverter sent the error code H0.
The number of retries exceeded the allowable number because of an
error in the transfer request data.
When errors
have occurred
consecutively
beyond the
allowable
number of
retries, inverter
is brought to an
alarm stop.
257 Parity error
Inverter sent the error code H1.
The contents are different from the specified parity.
258 Sum check error
Inverter sent the error code H2.
The sum check code in the computer is different from the sum value
calculated from the data received by the inverter.
259 Protocol error
Inverter sent the error code H3.
Syntax error is included in the data received by the inverter,
receiving of data was not completed within the specified time, or CR/
LF does not agree with the parameters.
260 Framing error
Inverter sent the error code H4.
The stop bit length is different from the initial set value.
261 Overrun error
Inverter sent the error code H5.
Before receiving the completed data in the inverter, the computer
sent the next set of data.
262 Undefined
Inverter sent the error code H6.
Not defined currently in inverter.
263 Character error
Inverter sent the error code H7.
An unused character (other than 0 to 9, A to F and control codes)
was received.
Inverter does
not accept
received data,
but is not
brought to an
alarm stop.
264 Undefined
Inverter sent the error code H8.
Not defined currently in inverter.
265 Undefined
Inverter sent the error code H9.
Not defined currently in inverter.
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