List Of Error Codes - Mitsubishi Electric MELSEC-L Series LD40PD01 User Manual

14.6

List of Error Codes

This section lists the codes of errors that may occur in the use of the I/O control module.
The error codes are stored in Latest error code (Un\G100) and also reported to the CPU module.
The  in the error code indicates the number of the multi function counter block where an error has occurred.
Error code Error name
(hexadecimal)
3001H Hardware error
1060H Flash ROM data
error
1080H Number of writes to
a flash ROM over
error
100H Multi function
counter block 
overflow error
101H Multi function
counter block 
underflow error
1020H Reset error during
hardware logic
control
1040H Reset error without
any data writes to a
flash ROM
109H SSI encoder block
 DATA signal
wire reverse error
10AH SSI encoder block
 DATA signal
error
10BH SSI encoder block
 parity error
14 TROUBLESHOOTING
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14.6 List of Error Codes
Description and cause
A hardware error has occurred.
The setting data in the flash ROM are
faulty.
The number of writes to a flash ROM
has exceeded 10000 times.
A count value has exceeded the upper
limit value when 32-bit multi function
counter block is set to linear counter
mode.
A count value has fallen below the
lower limit value when 32-bit multi
function counter block is set to linear
counter mode.
Operating condition settings batch-
reset command (Y3) has been turned
on during hardware logic control.
Operating condition settings batch-
reset command (Y3) has been turned
on while any setting data has not been
written to a flash ROM.
The positive and negative of the DATA
signal wire are reversely connected.
The DATA signal input state is Low at
the start of data transmission, or is
High just after the transmission is
completed.
A parity error has occurred.
Operation at the error
The control of hardware logic
stops.
The control can be started with
non-wired hardware logic.
The control of hardware logic can
be started.
The count operation stops for the
corresponding multi function
counter block.
The count operation stops for the
corresponding multi function
counter block.
The control of hardware logic
continues.
The operating condition settings
batch-reset for hardware logic is
not performed.
Position data from the encoder
cannot be received properly.
Action
Turn off and on the power, or reset the
CPU module.
If the error occurs again, the possible
cause is a failure of the module.
Please consult your local Mitsubishi
representative.
Write the setting data again with a
configuration tool. Take measures to
reduce noise with a shielded cable for
connection.
If the error occurs again, the possible
cause is a failure of the module.
Please consult your local Mitsubishi
representative.
Any further writes to a flash ROM may
not be reflected correctly.
Perform the preset function to the
corresponding multi function counter
block.
Perform the preset function to the
corresponding multi function counter
block.
Stop the control of hardware logic and
turn on Operating condition settings
batch-reset command (Y3).
Set operating conditions in a flash
ROM and turn on Operating condition
settings batch-reset command (Y3).
Check the external wiring.
Check the cabling, shielding, SSI
transmission speed, cable length, and
SSI code length. In addition, consider
the possibility of noise effects.
Check the external wiring and settings
of the SSI encoder block.