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12-2
12.1 Error Code List
The CPU module uses the self diagnostics function to display error information (on the LED) and
stores the information into the special relay SM and special register SD, when an error occurs in
the following situations:
• When the Progammable Controller is powered ON.
• When the CPU module is switched from STOP to RUN.
• While the CPU module is running.
If an error occurs when a communication request is issued from the peripheral device, intelligent
function module or network system to the CPU module, the CPU module returns the error code
(4000
H
to 4FFF
H
) to the request source.
The following describes the description of errors which occur in the CPU module and the
corrective actions for the errors.
(1) How to read the error code list
The following describes how to read Section 12.1.3 Error code list (1000 to 1999) to Section
12.1.9 Error code list (7000 to 10000).
(a) Error code, common information and individual information
Alphanumeric characters in the parentheses of the titles indicate the special register
numbers where each information is stored.
(b) Compatible CPU
QCPU : Indicates all the Q series CPU modules.
Q00J/Q00/Q01 : Indicates the Basic model QCPU.
Qn(H) : Indicates the High Performance model QCPU.
QnPH : Indicates the Process CPU.
QnPRH : Indicates the Redundant CPU.
QnU : Indicates the Universal model QCPU.
Each CPU module : Indicates the relevant specific CPU module.
model name (Example: Q02U)