Mitsubishi Electric Q06HCPU - Appendix 1.11 Error codes returned to request source during communication with CPU module

409
APPENDICES
A
Appendix 1 Error Codes Appendix 1.9 List of error codes (7000 to 10000)
*1 For the Basic model QCPU, this LED can be turned on/off using the LED control function. (For the High Performance
model QCPU, Process CPU, Redundant CPU, Universal model QCPU, and LCPU, the LED can only be turned off.)
User's Manual (Function Explanation, Program Fundamentals) for the CPU module used
*2 The product name is the MELSEC- Q series compatible PC CPU module bus interface driver software package.
*3 The Basic model QCPU does not have the USER LED.
9120
[PID ERROR]
Data in the system area used for auto tuning (limit
cycle method) have been overwritten.
■Collateral information
• Common information: Program error location
• Individual information: -
■Diagnostic timing
• When instruction executed
Check that data in the system area occupied
by the PID instructions are not overwritten.
RUN: On
ERR.:On
CPU Status:Continue
LCPU
QnUDV
9121
[PID ERROR]
The operation result is abnormal because the auto
tuning (limit cycle method) measurement time has
exceeded. (
ON
>, 
ON
<0, <0)
■Collateral information
• Common information: Program error location
• Individual information: -
■Diagnostic timing
• When instruction executed
Increase the difference between the output
upper limit and lower limit (ULV-LLV) for auto
tuning, or set a smaller value to the input filter
constant () or the PV threshold (SH
PV
).
Then, check the result again.
RUN: On
ERR.:On
CPU Status:Continue
LCPU
QnUDV
9122
[PID ERROR]
• The proportional gain (K
P
) resulted from auto
tuning (limit cycle method) is out of the range, 0
to 32767.
• The rate of change in the process value (PV) is
smaller compared with that in the output value.
■Collateral information
• Common information: Program error location
• Individual information: -
■Diagnostic timing
• When instruction executed
Multiply the process value (PV) by ten so that
the rate of change in the PV increases during
auto tuning.
RUN: On
ERR.:On
CPU Status:Continue
LCPU
QnUDV
9123
[PID ERROR]
• The integral time (T
I
) resulted from auto tuning
(limit cycle method) is out of the range, 0 to
32767.
• The auto tuning time is longer than necessary.
■Collateral information
• Common information: Program error location
• Individual information: -
■Diagnostic timing
• When instruction executed
Increase the difference between the output
upper limit and lower limit (ULV-LLV) for auto
tuning, or set a smaller value to the input filter
constant () or the PV threshold (SH
PV
).
Then, check the result again.
RUN: On
ERR.:On
CPU Status:Continue
LCPU
QnUDV
9124
[PID ERROR]
• The derivative time (T
D
) resulted from auto
tuning (limit cycle method) is out of the range, 0
to 32767.
• The auto tuning time is longer than necessary.
■Collateral information
• Common information: Program error location
• Individual information: -
■Diagnostic timing
• When instruction executed
Increase the difference between the output
upper limit and lower limit (ULV-LLV) for auto
tuning, or set a smaller value to the input filter
constant () or the PV threshold (SH
PV
).
Then, check the result again.
RUN: On
ERR.:On
CPU Status:Continue
LCPU
QnUDV
10000
[CONT. UNIT ERROR]
In the multiple CPU system, an error occurred in
the CPU module other than the Process CPU and
High Performance model QCPU.
■Collateral information
• Common information: -
• Individual information: -
■Diagnostic timing
• Always
To check the details of the error, connect a
programming tool to the corresponding CPU
module.
RUN: Off
ERR.:Flashing
CPU Status:Continue
Qn(H)
QnPH
Error
code
Error and cause Corrective action
LED status,
CPU status
Corresponding
CPU