Mitsubishi Electric MELSEC iQ-R Series User Manual page 87

Error code Error name
1BH Process alarm upper lower
limit value setting range error
1B8H Alert output setting (Rate
alarm) range error
1B9H Rate alarm alert detection
cycle setting range error
1BAH Rate alarm upper/lower limit
setting value inversion error
1C5H Disconnection detection
enable/disable setting range
error
1CA0H Cold junction compensation
resistor disconnection
detection error
1D0H Logging enable/disable
setting range error
1D1H Logging cycle setting value
range error
1D2H Logging cycle setting disable
error
1D3H Logging data setting range
error
1D4H Post-trigger logging points
setting range error
1D5H Level trigger condition setting
range error
1D6H Trigger data setting range
error
1D7H Logging hold request range
error
1D8H Loading interrupt enable/
disable setting range error
1D9H Logging read points setting
value range error
1E50H Offset/gain setting channel
specification error
1E51H User range data invalid (CH
identification disabled)
Description and cause
The values not satisfying the following condition are
set in CH Process alarm upper upper limit value to
CH Process alarm lower lower limit value:
Upper upper limit value  Upper lower limit value 
Lower upper limit value  Lower lower limit value
 indicates that the set values are as follows:
1: Process alarm lower lower limit value > Process
alarm lower upper limit value
2: Process alarm lower upper limit value > Process
alarm upper lower limit value
3: Process alarm upper lower limit value > Process
alarm upper upper limit value
4: The process alarm lower lower limit value is
below the measuring range.
5: The process alarm upper upper limit exceeds the
measuring range.
A value other than 0 and 1 is set in CH Alert output
setting (Rate alarm).
A value other than 1 to 32000 is set in CH Rate
alarm alert detection cycle setting.
CH Rate alarm upper limit value and CH Rate
alarm lower limit value are set as Lower limit value 
Upper limit value.
A value other than 0 and 1 is set in CH
Disconnection detection enable/disable setting.
Disconnection of a cold junction compensation
resistor (RTD) has been detected.
A value other than 0 and 1 is set in CH Logging
enable/disable setting.
A value out of the range is set in CH Logging cycle
setting value and/or CH Logging cycle unit setting.
CH Logging cycle setting value and CH Logging
cycle unit setting are set so that the set logging cycle
falls below the conversion cycle.
A value other than 0 and 1 is set in CH Logging
data setting.
A value other than 1 to 1000 is set in CH Post-
trigger logging points.
A value other than 0 to 3 is set in CH Level trigger
condition setting.
A value other than 0 to 9999 is set in CH Trigger
data.
A value other than 0 and 1 is set in CH Logging
hold request.
A value other than 0 and 1 is set in CH Loading
interrupt enable/disable setting.
A value other than 1 to 1000 is set in CH Logging
read points setting value.
In the offset/gain setting, Setting channel (1) is set
for both CH Offset/gain setting mode (offset
specification) and CH Offset/gain setting mode
(gain specification), or Disable (0) is set for the both
buffer memory areas.
An invalid value is set in the offset/gain setting. The
number of the channel in which this error has
occurred cannot be identified.
Action
Set CH Process alarm upper upper limit value to
CH Process alarm lower lower limit value so that
the values satisfy the following condition:
Upper upper limit value  Upper lower limit value 
Lower upper limit value  Lower lower limit value
Set values within the measuring range in CH
Process alarm lower lower limit value and CH
Process alarm upper upper limit value.
Set 0 or 1 in CH Alert output setting (Rate alarm).
Set a value of 1 to 32000 in CH Rate alarm alert
detection cycle setting.
Set CH Rate alarm upper limit value and CH
Rate alarm lower limit value as Lower limit value <
Upper limit value.
Set 0 or 1 in CH Disconnection detection enable/
disable setting.
Check wiring of the cold junction compensation
resistor (RTD).
Set 0 or 1 in CH Logging enable/disable setting.
Set the value(s) within the range in one or both of
CH Logging cycle setting value and CH Logging
cycle unit setting.
Set CH Logging cycle setting value and CH
Logging cycle unit setting so that the logging cycle is
the conversion cycle of the object to be logged or
more.
Set 0 or 1 in CH Logging data setting.
Set a value of 1 to 1000 in CH Post-trigger logging
points.
Set a value of 0 to 3 in CH Level trigger condition
setting.
Set a value of 0 to 9999 in CH Trigger data.
Set 0 or 1 in CH Logging hold request.
Set 0 or 1 in CH Loading interrupt enable/disable
setting.
Set a value of 1 to 1000 in CH Logging read points
setting value.
Correctly set CH Offset/gain setting mode (offset
specification) and CH Offset/gain setting mode
(gain specification).
Perform the offset/gain setting again for all channels
where the user range is set.
If the error occurs again, the possible cause is a
failure of the module. Please consult your local
Mitsubishi representative.
3 TROUBLESHOOTING
3.4 List of Error Codes
3
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