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Appendix 1.4 List of error codes (2000 to 2999)
The following table shows the error messages, the error contents and causes, and the corrective actions for the error
codes (2000 to 2999).
Error
code
Error and cause Corrective action
LED status,
CPU status
Corresponding
CPU
2000
[UNIT VERIFY ERR.]
In a multiple CPU system, a CPU module
incompatible with the multiple CPU system is
mounted.
■Collateral information
• Common information: Module No. (Slot No.)
• Individual information: -
■Diagnostic timing
• When an END instruction executed
Replace the CPU module incompatible with
the multiple CPU system with a CPU module
compatible with the multiple CPU system.
RUN: Off/On
ERR.:Flashing/On
CPU Status:
Stop/Continue
*1
Qn(H)
QnPH
[UNIT VERIFY ERR.]
The I/O module status is different from the I/O
module information at power ON.
• The I/O module (including the intelligent function
module) is nearly disconnected or removed
while the system is running.
■Collateral information
• Common information: Module No. (Slot No.)
[For Remote I/O network] and Network
No./Station No.
• Individual information: -
■Diagnostic timing
• When an END instruction executed
• Read common information of the error
using the programming tool to identify the
numeric value (module No.). Check the
module corresponding to the value and
replace it as necessary.
• Monitor SD150 to SD157 using the
programming tool to identify the module
whose data bit is "1". Check the
corresponding module and replace it as
necessary.
Q00J/Q00/Q01
[UNIT VERIFY ERR.]
The I/O module status is different from the I/O
module information at power ON.
• The I/O module (including the intelligent function
module/special function module) is nearly
disconnected, removed, or mounted while the
system is running.
■Collateral information
• Common information: Module No. (Slot No.)
[For Remote I/O network] Network No./Station
No.
• Individual information: -
■Diagnostic timing
• Always
• Read common information of the error
using the programming tool to identify the
numeric value (module No.). Check the
module corresponding to the value and
replace it as necessary.
• Monitor SD1400 to SD1431 using the
programming tool to identify the module
whose data bit is "1". Check the
corresponding module and replace it as
necessary.
• When a GOT is bus-connected to the main
base unit or extension base unit, check the
connection status of the extension cable
and the grounding status of the GOT.
Qn(H)
QnPH
QnPRH
QnU
2001
[UNIT VERIFY ERR.]
During operation, a module was mounted on the
slot where the empty setting of the CPU module
was made.
■Collateral information
• Common information: Module No. (CPU No.)
• Individual information: -
■Diagnostic timing
• Always
During operation, do not mount a module on
the slot where the empty setting of the CPU
module was made.
RUN: Off/On
ERR.:Flashing/On
CPU Status:
Stop/Continue
*2
Q00J/Q00/Q01
QnU
2010
[BASE LAY ERROR]
• More than applicable number of extension base
units have been used.
• When a GOT was bus-connected, the CPU
module was reset while the power of the GOT
was OFF.
■Collateral information
• Common information: Base No.
• Individual information: -
■Diagnostic timing
• At power-on/At reset
• Use the allowable number of extension
base units or less.
• Power on the programmable controller and
GOT again.
RUN: Off
ERR.:Flashing
CPU Status:Stop
Q00J/Q00/Q01
QnPRH
Q00UJ
Q00UCPU
Q01UCPU
Q02UCPU
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