Chapter 14 Troubleshooting
14-17
14.3
Troubleshooting for
Other Modules
The error codes and troubleshootings for the modules can be found in the DVP Series Module Manual.
14.4
LED Indicators and Error Codes for CPU Modules
The error codes and LED indicators are presented in the following tables.
Descriptions used in the table
a. Error code: If an error occurs in the system, an error code is generated.
b. Description: The description of the error
c. CPU status: If the error occurs, the CPU stops running, keeps running, or shows the status you defined for the
error.
Stop: The CPU stops running when the error occurs.
Continue: The CPU keeps running when the error occurs.
d. LED indicator status: If the error occurs, the LED indicator is ON, OFF, or blinks.
ERROR: System error
LED Indicator Description Table
There are five types of error indicator states for of the CPU module errors, including LED indicator ON, OFF, blinking
fast, blinking normally, and blinking slowly. When the LED indicator is ON, blinking fast/normally, clear the problems
first in order to run the CPU module. When the LED indicator is blinking slowly, indicating a warning type of error
codes, it does not require immediate action. Clear the problems when the module is powered off.
Module Type LED Indicator Descriptions
CPU
Error Type
ON: A serious error occurs in the module.
Blinking fast (every 0.2 seconds): unstable power supply or hardware Failure.
Blinking normally (every 0.5 second): system program errors or system cannot run.
Warning Type
Blinking slowly (every one second and off for three seconds): a warning is
triggered, but the system can still run.
OFF: a warning is triggered, but the system can still run. You can modify the rules of
how a warning is triggered, or use the SM/SR to show the warnings.
Error Code Description Table
Error
code
Description
CPU
status
ERROR LED indicator status
ON
000A Scan timeout Stop V
The program in the PLC is damaged.
The access to the memory in the CPU is denied.
The PLC password is incorrect.