List Of Error Codes - Mitsubishi Electric MELSEC iQ-F FX5 User Manual

9.3

List of Error Codes

If an error occurs in operation of the temperature control module, the error code of the error is stored into 'Latest error code'
(Un\G0) of the buffer memory and 'Error flag' (Un\G398, b2) turns ON. Further, an error address is stored in 'Error occurrence
address' (Un\G1).
Turning ON 'Error reset command' (Un\G399, b2) clears the error code in 'Latest error code' (Un\G0), and 'Error flag'
(Un\G398, b2) turns OFF.
The following table lists the error codes to be stored.
 in error codes: This symbol indicates the number of the channel where an error has occurred. (1: CH1, 2: CH2, 3: CH3, 4:
CH4)
Error code Error name
(HEX)
1900H Write error in
operation mode
1910H Set value
discrepancy error
(control mode)
1940H Setting change
error during default
setting registration
1950H Setting out of
range error
1A0H CH Upper/lower
limit output limiter
setting error
1A1H CH Upper/lower
limit setting limiter
setting error
1A7H CH Auto tuning
error
1A8H CH Auto tuning
error
1A9H CH Auto tuning
error
1AAH CH Auto tuning
error
9 TROUBLESHOOTING
92
9.3 List of Error Codes
Cause and description
Writing a value to the area where writing is allowed only in
the setting mode was attempted in the operation mode.
The current control mode is different from the one backed
up in the non-volatile memory because the control mode
was changed.
The setting value has been changed while 'Default setting
registration command' (Un\G399, b9) is ON.
Data out of the setting range is being written.
The value set in CH Lower limit output limiter is equal to
or greater than the value set in CH Upper limit output
limiter.
The value set in CH upper limit setting limiter and CH
lower limit setting limiter becomes lower limit value upper
limit value.
The AT point (= Set value (SV) + AT bias) fluctuated
within the upper/lower limit setting limiter range.
The AT point (= Set value (SV) + AT bias) fluctuated
within the upper/lower limit setting limiter range.
The proportional band has been set to 0.
Settings of the buffer memory areas where changing the
settings is not allowed have been changed.
Action
Follow the instructions below to reset the error.
1: Change the mode to the setting mode.
2: Set the correct value and turn OFF→ON→OFF
'Setting change command' (Un\G399, b11).
If in FX3 allocation mode, turn OFF→ON→OFF the error
reset command to reset the settings range error address.
Turn OFF→ON→OFF 'Setting value backup command'
(Un\G399, b8).
After turning OFF→ON→OFF 'Error reset command'
(Un\G399, b2), change the set value.
*1
Set data within the range.
If in FX3 allocation mode, turn OFF→ON→OFF the error
reset command to reset the settings range error address.
Set the value so that the upper limit value is greater than
the lower limit value.
If in FX3 allocation mode, turn OFF→ON→OFF the error
reset command to reset the settings range error address.
Set the value so that the upper limit value is greater than
the lower limit value.
If in FX3 allocation mode, turn OFF→ON→OFF the error
reset command to reset the settings range error address.
After turning OFF→ON→OFF 'Error reset command'
(Un\G399, b2), implement the auto tuning again
considering the following points.
• Set the AT bias so that the temperature process value
(PV) during AT does not get out of the input range.
• Check the upper limit output limiter value. If the value is
100% or greater, change the value.
• Change the input range to widen the process
temperature range.
After turning OFF→ON→OFF 'Error reset command'
(Un\G399, b2), set a set value (SV), an AT point, or an
upper/lower limit setting limiter so that the set value (SV)
or the AT point is within the upper/lower limit setting limiter
range, and implement auto tuning again.
After turning OFF→ON→OFF 'Error reset command'
(Un\G399, b2), set the proportional band to a value other
than 0, and implement auto tuning again.
After turning OFF→ON→OFF 'Error reset command'
(Un\G399, b2), implement auto tuning again. While auto
tuning is being implemented, do not change the settings
of the buffer memory areas.