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Error
code
Classification
(hexadecimal)
The set values
meet one of the
following
conditions.
0008H
Moderate error
CH Sensor two-
point correction
offset latch request
(RY28, RY2A,
RY2C, RY2E) or
CH Sensor two-
*4
Moderate error
point correction
009H
gain latch request
(RY29, RY2B,
RY2D, RY2F) was
turned on while a
channel was
operating.
The current set
value and the set
value backed up in
the non-volatile
000DH
Moderate error
memory are
different due to the
shift of control
mode.
The current set
value and the set
value backed up in
the non-volatile
000EH
Moderate error
memory are
different due to the
change of control
output cycle unit.
The current set
value and the set
value backed up in
the non-volatile
000FH
Moderate error
memory are
different due to the
change of
sampling cycle.
Operation at error
Cause
occurrence
• The process
alarm upper
upper limit value
is smaller than
the upper lower
• The data written is
limit value.
retained.
• The process
• The control is
alarm upper
performed with the
data of before the
lower limit value
is smaller than
setting.
the lower upper
limit value.
• The process
alarm lower
upper limit value
is smaller than
the lower lower
limit value.
The latch request is
ignored.
Remote buffer
memory areas (100H
or later) are
overwritten with
default values.
The control output
cycle setting, heating
control output cycle
setting, and cooling
control output cycle
setting are
overwritten with
default values.
Remote buffer
memory areas (100H
or later) are
overwritten with
default values.
CHAPTER 11 TROUBLESHOOTING
*1
Error details
• The address of remote
buffer memory area where
Set the values that meet the following
an error has occurred is
conditions.
stored in Error occurrence
• The process alarm upper upper limit
*3
address.
value is smaller than the upper lower
• The process value of the
limit value.
error channel is stored in
• The process alarm upper lower limit
Process value (PV).
value is smaller than the lower upper
• The manipulated value of
limit value.
the error channel is stored
• The process alarm lower upper limit
in Manipulated value (MV).
value is smaller than the lower lower limit
• The set value of the error
value.
channel is stored in Set
value (SV).
• The process value of the
error channel is stored in
Process value (PV).
Turn off CH Sensor two-point correction
• The manipulated value of
offset latch request (RY28, RY2A, RY2C,
the error channel is stored
RY2E) or CH Sensor two-point correction
in Manipulated value (MV).
gain latch request (RY29, RY2B, RY2D,
• The set value of the error
RY2F) of the error channel.
channel is stored in Set
value (SV).
0080H is stored in Error
Turn on Set value backup instruction
occurrence address.
(RY15).
0001H is stored in Error
Turn on Set value backup instruction
occurrence address.
(RY15).
0001H is stored in Error
Turn on Set value backup instruction
occurrence address.
(RY15).
Action
11
273
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Table of Contents
Troubleshooting
