Delta AH500 Hardware Operation Manual page 618

Error
code
The node used in the communication command is
16#6305
different from the local node.
The remote device in the Ether Link does not respond
16#6309
after the timeout period.
The module ID or the setting of the module is different
16#630A
from the setting in the Ether Link.
The setting of the netmask address for the CPU or the
16#630B
module is different from the setting in the Ether Link.
The number of TCP connections reaches the upper
16#6400 limit, or the flag which is related to the sending of the
data is not set to ON.
16#6401 The remote device aborts the connection.
There is no response from the remote device after the
16#6402
timeout period.
The remote IP address used in the applied instruction
16#6403
is illegal.
16#6404 The MODBUS function code not supported is received.
The number of data which will be received is not
16#6405
consistent with the actual length of the data.
An error occurs when a data exchange function is
16#6500
initialized. (SM699)
A remote device does not respond after a timeout.
16#6501
(SM828-SM955)
The packet with which a remote device replies is
16#6502
incorrect. (SM828-SM955)
An error occurs when a Modbus TCP data exchange is
16#6700
initialized.
16#6701 Modbus TCP data exchange timeout
The data received by means of a Modbus TCP data
16#6702
exchange is incorrect.
16#7002 The CPU module does not support the function.
16#7203 Invalid access code
16#7401 Function code error
The size of a packet exceeds the maximum data
16#7402
length.
16#7404 Packet format error
16#7405 The number of bytes is incorrect.
16#7406 Checksum error
16#7407 There are non-ASCII characters in a command.
16#7408 The PLC is running.
Data is being written to the memory in the PLC or data
16#740A
fails to be written to the memory in the PLC.
The CPU module is being reset, or the values in the
16#740B
laching devices are being cleared.
The backplane number in a communication command
16#740C
is incorrect.
The slot number in a communication command is
16#740D
incorrect.
An error occurs when the the data in the memory in the
16#740E
PLC is cleared.
16#740F Communication timeout
16#7410 The function code in a reply command is incorrect.
Description
C h a p t e r 1 2 Tr o u b l e s h o o t i n g
LED indicator status
CPU
Status
ERROR
FAULT
Continue Blinking
Continue Keep
Continue Blinking
Continue Blinking
Continue Keep
Continue Keep
Continue Keep
Continue Keep
Continue Keep
Continue Keep
Continue Blinking
Continue OFF
Continue OFF
Continue Keep
Continue Keep
Continue Keep
Continue Keep
Continue Keep
Continue Keep
Continue Keep
Continue Keep
Continue Keep
Continue Keep
Continue Keep
Continue Keep
Continue Keep
Continue Keep
Continue Keep
Continue Keep
Continue Keep
Continue Keep
Continue Keep
BUS
Keep
Keep
Keep
Keep
Keep
Keep
Keep
Keep
Keep
Keep
OFF
OFF
OFF
Keep
Keep
Keep
Keep
Keep
Keep
Keep
Keep
Keep
Keep
Keep
Keep
Keep
Keep
Keep
Keep
Keep
Keep
Keep
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