Delta AH500 - Error Codes and LED Indicators; CPU Modules

AH500 Programming Manual
7-2
7.1
Error Codes and LED Indicators
 Columns
a. Error code: If the error occurs in the system, the 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 in the status defined
by users.
 Stop: The CPU stops running when the error occurs.
 Keep: The CPU keeps running when the error occurs.
 Self-defined: The status of the CPU can be defined by users. Please refer to section 8.2.1 in
Operation Manual for more information.
d. LED indicator status: If the error occurs, the LED indicator is ON, OFF, or blinks.
 ERROR: The system error
 BUS FAULT: The I/O bus error
 Module ERROR: The module error
 LED indicators
7.1.1 CPU Modules
Error code Description
CPU
Status
LED indicator
status
ERROR
BUS
FAULT
16#000A
Scan timeout
(SM8: The watchdog timer error
)
Stop Blinking Keep
16#000B
The program in the PLC is damaged.
Stop
ON
Keep
16#000C
The program downloaded to the PLC is
incorrect.
Stop Blinking Keep
16#000D
The CPU parameter is damaged.
Stop
ON
Keep
16#000E
The program or the parameter is being
downloaded, and therefore the PLC can not
run.
Stop Blinking Keep
16#000F
The original program in the PLC is damaged.
Continue
Keep
Keep
16#0010
The access to the memory in the CPU is
denied.
Stop ON Keep
16#0011
The PLC ID is incorrect. (SM9)
Continue
ON
Keep
16#0012
The PLC password is incorrect.
Continue
ON
Keep
16#0013
The I/O module can not run/stop. (SM10)
Stop
Keep
ON
16#0014
The procedure of restoring the system can not
be executed. (SM9)
Stop ON ON
16#0015
The module table is incorrect. (SM10)
Stop
ON
Keep
LED indicator
Description
CPU
ERROR
The status of the CPU
ON: A serious error occurs in the system.
OFF: The system is normal.
Blinking: A slight error occurs in the system.
BUS FAULT
The status of the I/O bus
ON: A serious error occurs in the I/O bus.
OFF: The I/O bus is normal.
Blinking: A slight error occurs in the I/O bus.
Module
ERROR
The status of the module
ON: A serious error occurs in the module.
OFF: The module is normal.
Blinking: A slight error occurs in the module.