Panasonic FP2 ET-LAN Technical Manual page 214

Code Name
A005H TCP/IP processing
error
12-14
Description
Error notification was received
from the TCP.
No connection established:
This notification is received if an
attempt was made to request
transmission or reception
without a TCP connection being
established.
Connection closed:
This notification is received if an
attempt was made to request
transmission or reception while a
close request was in process
after the connection was
established.
Connection already established:
This notification is received if a
new open request is made with
the same source node port
number, partner node port
number, and partner node IP
address, after a connection has
been established.
Internal resource error:
Successive TCP transmission
requests are made without a
response being returned.
Checksum error:
This notifies the user that, when
a TCP packet was received, the
checksum value was incorrect.
ULP timeout error:
This notifies the user that, when
a TCP packet was re-sent, a
normal response was not
returned by the destination
within a given period of time.
Step to take
Carry out the transmission
processing again.
If communication cannot be
performed after the
occurrence of error, use the
reset function or turn the
power off and on again.
Remark
If any of
these errors
occur, the
E1 LED on
the front
panel of the
ET-LAN unit
flashes.