Checking Absence/Presence Of Errors - Mitsubishi Electric FX3U-232-BD User Manual

FX Series PLC User's Manual - Data Communication Edition
Inverter Communication
11.5

Checking Absence/Presence of Errors

Verify that the error flag is not ON.
If the error flag is ON, check the error code and take proper countermeasures.
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
FX Series
FX
2N
FX ,FX ,FX
3S 3G
2. Error code list
Error
code
(DEC)
0 Normal end
1
2 Timeout error
3 Station number error Unspecified station gave response.
4 Sum check error
Parameter number
5
specification error
Communication port
6 occupied by another
communication type
Station number
7
outside setting range
Sending timeout
8
*1
error
9
Received data error
256 Computer NAK error
257 Parity error
258 Sum check error
259 Protocol error
260 Framing error
E-136
,FX
2NC
,FX ,FX
3GC 3U 3UC
M8152
(No Errors)

Inverter did not give response.
Sending from inverter was aborted midway.
The sum of data sent back by the inverter did not match.
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.
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.
A value outside the allowable range is set to the station number.
At this time, error code (K6706) is set to D8067.
K6706: Out-of-range data value for operand in applied instruction.
Sending to the inverter was not completed within the specified time.
*1
Wrong data was received from the inverter.
Inverter sent the error code H0.
The number of retries exceeded the allowable number because of an
error in the transfer request data.
Inverter sent the error code H1.
The contents are different from the specified parity.
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.
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.
Inverter sent the error code H4.
The stop bit length is different from the initial set value.
For error codes, refer to the next page.
Error flag
M8156
ch1 ch2
M8157
Contents of error
11 Troubleshooting
11.5 Checking Absence/Presence of Errors
Data register for storing error code
D8156
ch1
D8152 D8157
Inverter
operation
When errors
have occurred
consecutively
beyond the
allowable
number of
retries, inverter
is brought to an
alarm stop.
ch2
