Led Indicators And Error Codes For Cpu Modules - Delta DVP-ES3 Series Operation Manual

D V P - E S 3 S e r i e s O p e r a t i o n Ma n u a l

12.4 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
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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
CPU

Error Code Description Table
Error
code
000A Scan timeout
000C The program in the PLC is damaged.
0010 The access to the memory in the CPU is denied.
0011 The PLC ID is incorrect.
0012 The PLC password is incorrect.
0026 RTC cannot keep track of the current time
24VDC power supply is not sufficient and then is
002A
recovered from low-voltage for less than 10 ms.
1 2 - 1 4
ON: A serious error occurs in the module.
Error Type 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.
Blinking slowly (every one second and off for three seconds): a warning is
triggered, but the system can still run.
Warning Type
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.
Description
Descriptions
ERROR LED indicator status
CPU
status
Blinking
ON
fast
Stop V
Stop
Stop
Continue
Continue
Continue
Continue V
Blinking
Blinking
OFF
normally
slowly
V
V
V
V
V