BASEstartm Open DAS
for
Modicon®
on Tru64tm UNIX®
Installation and
User's Guide
Appendix A
I/O Error Messages
This appendix contains returned values and associated error messages
for the low level I/O routines.
accepterror, Error in accepting a connection on a socket,
Explanation: Error. An error occurred when attempting
to accept a connection on a socket.
User Action: Examine the log file output to determine
the error and then take corrective action based on the error that is
found.
acceptstatus, Error in accepting a connection on a socket at port X,
errno = X,
Explanation: Error. An error occurred when attempting
to accept a connection on a sockat at the indicated port.
User Action: Examine the error and take corrective
action based on the error that is found.
binderror, Error occurred when binding a socket to an address,
Explanation: Error. An error occrred when attempting
to bind a socket to a local address.
User Action: Examine the log file output to determine
the error and then take corrective action based on the error that is
found.
bindstatus, Error for port X returned from bind () = X,
Explanation: Error. An error occrred when attempting
to bind a socket to a local address.
User Action: Examine the log file output to determine
the error and then take corrective action based on the error that is
found.
connecterror, Error connecting to Internet address,
Explanation: Error. An error occurred when attempting
to connect to an Internet address.
User Action: Examine the log file (BASEstar Open) or
stderr to determine the error that occurred. Then take corrective
action based on the error that was found.
connectstatus, Error connecting to Internet address XX port X, errno =
X,
Explanation: Error. An error occurred when attempting
to connect to an Internet address.
User Action: Look up the errno to determine the error
that occurred. Then take corrective action based on the error that was
found.
dataoverrun, Data overrun occurred on the port,
Explanation: Error. A data overrun occurred on the
line.
User Action: Use a slower baud rate or switch to a
port that has faster hardware.
dont, TELNET server refused to allow TELNET option,
Explanation: Error. The TELNET server responded with
"DON'T" to a request, "WILL", for the requested TELNET option.
User Action: Enable the apropriate option on the
TELNET server or substitute a server that supports requested option.
dontdobin, TELNET server refused to allow binary data reception,
Explanation: Error. The TELNET server responded with
"DON'T" to a request, "WILL", for the host to send binary data (TELNET
option RFC 856).
User Action: Enable binary mode transmission on the
TELNET server or substitute a server that supports binary mode
transmission/reception.
ebusy, Mount device busy for address XX port X,
Explanation: Error. An attempt to connect to a port
resulted in a "busy" status being returned.
User Action: If using LAT, make sure that the port is
defined in the LAT Control Program and that noone else is using the
econnrefused, The attempt to connect was rejected for address XX port X,
Explanation: Error. An attempt to connect resulted was
rejected by the remote server.
User Action: If using TELNET, check the terminal
server to ensure that the listener port has been properly configured
and enabled.
ehostunreach, No route to host is present for address XX port X,
Explanation: Error. An attempt to connect to a TELNET
port resulted in an unreachable status being returned.
User Action: Make sure that the IP address and port
number are properly defined and that a gateway is defined on the host.
eioopen, I/O error for port XX returned from open (),
Explanation: Error. An I/O error occurred when
attempting to open the port.
User Action: If using LAT, make sure that the port is
defined in the LAT Control Program and that noone else is using the
enetunreach, No route to the network or host is present for address XX
port X,
Explanation: Error. An attempt to connect to a TELNET
port resulted in an unreachable status being returned.
User Action: Make sure that the IP address and port
number are properly defined and that a gateway is defined on the host.
etimedout, Connection timed out for address XX port X,
Explanation: Error. An attempt to connect to a port or
socket timed out.
User Action: If using LAT, make sure that the port is
defined in the LAT Control Program and that noone else is using the
port. Then attempt to reconnect to the port. If using TELNET, make sure
that the IP address and port number are defined properly on the
terminal server and that the listener port is enabled. Also ensure that
a gateway is defined if the host and the terminal server are not on the
same subnet.
gethostbyerror, Error occurred when retrieving host information -
gethostbyname (),
Explanation: Error. An error occrred when attempting
to obtain information from the local host.
User Action: Examine the log file output to determine
the error and then take corrective action based on the error that is
found.
gethostbystatus, Error for port X returned from gethostbyname () = X,
Explanation: Error. An error occrred when attempting
to obtain information from the local host.
User Action: Examine the log file output to determine
the error and then take corrective action based on the error that is
found.
gethosterror, Error occurred when retrieving host information -
gethostname (),
Explanation: Error. An error occrred when attempting
to obtain the local host name.
User Action: Examine the log file output to determine
the error and then take corrective action based on the error that is
found.
gethoststatus, Error for port X returned from gethostname () = X,
Explanation: Error. An error occrred when attempting
to obtain the local host name.
User Action: Examine the log file output to determine
the error and then take corrective action based on the error that is
found.
inaddrerror, Error when converting an Internet address to binary form,
Explanation: Error. An error occurred when convertng
an Internet address
User Action: Examine the Internet address to determine
the error and then correct the Internet address.
invalidspeed, An invalid baud rate was specified,
Explanation: Error. A baud rate that was defined in
ODS is not valid.
User Action: Check the documentation to determine
valid baud rates for the hardware platform being used. Then modify the
baud rate in ODS to a valid value.
listenerror, Error in listening on a socket,
Explanation: Error. An error occurred when attempting
to listen to a socket.
User Action: Examine the log file output to determine
the error and then take corrective action based on the error that is
found.
listenstatus, Error in listening on a socket at port X, errno = X,
Explanation: Error. An error occurred when attempting
to listen to a socket at the indicated port.
User Action: Examine the error and take corrective
action based on the error that is found.
negfailed, TELNET option negotiation failed,
Explanation: Error. An I/O error occurred when
attempting to negotiate TELNET options.
User Action: Examine the log file (BASEstar Open) or
stderr to determine the cause of the error and then take corrective
action based on the error found.
nolicense, No software license,
Explanation: Error. The DAS requires a software
license.
User Action: Install the license PAK for the DAS.
openerrorstatus, Errno for port XX returned from open () = X,
Explanation: Error. An error occurred when opening the
port.
User Action: Look up the error number to determine the
cause of the error and take appropriate action based on the error code.
parity, A parity error occurred on the port,
Explanation: Error. A parity error occurred on the
port.
User Action: Check parity of the device and make sure
it matches of the host. (LAT and TELNET parity is set in the terminal
server.) If parity is set correctly, then verify that all cabling is
grounded and terminated properly.
portopenerror, Error returned from open,
Explanation: Error. An error occurred when opening the
port.
User Action: Check the log file to determine the error
code, look up the error number to determine the cause of the error and
take appropriate action based on the error code.
portsyncerror, Unable to change file descriptor to blocking,
Explanation: Error. An error occurred when using
ioctl() to place a file descriptor in blocking mode.
User Action: Examine the log file (BASEstar Open) or
stderr to determine the error and then take corrective action based on
the error found.
portsyncstatus, Unable to change file descriptor to blocking for
address XX port X, errno = X,
Explanation: Error. An error occurred when using
ioctl() to place a file descriptor in blocking mode.
User Action: Look up the error and then take
corrective action based on the error found.
portsyntax, Improper syntax for intenet address,
Explanation: Error. There is an error in the syntax of
the port address.
User Action: Check the syntax of the address and
correct it to be a well formed internet address.
readerror, Read error occurred on the port.,
Explanation: Error. An error was found when reading
from the port. Examine the log file (BASEstar Open) or stderr to
determine the errno returned by the read.
User Action: Look up the error and take action based
on the error found.
readstatus, Read error on port XX, errno = X,
Explanation: Error. An error was found when reading
from the port. The error number for the error is given in the message.
User Action: Look up the error and take action based
on the error found.
recverror, Read (recv) error occurred on the port,
Explanation: Error. An error was found when reading
from the port. Examine the log file (BASEstar Open) or stderr to
determine the errno returned by the read.
User Action: Examine the log file (BASEstar Open) or
stderr to determine the errno returned by the recv call. Then take
action based on the error found.
recvstatus, Read (recv) error on address XX port X, errno = X,
Explanation: Error. An error was found when reading
from the port. The error number for the error is given in the message.
User Action: Look up the error and take action based
on the error found.
setopterror, Error occurred when setting a socket option,
Explanation: Error. An error occrred when attempting
to set a socket option.
User Action: Examine the log file output to determine
the error and then take corrective action based on the error that is
found.
setoptstatus, Error for address XX, port X returned from setsockopt ()
= X,
Explanation: Error. An error occrred when attempting
to set a socket option.
User Action: Examine the log file output to determine
the error and then take corrective action based on the error that is
found.
socketerror, Error in obtaining a socket for port,
Explanation: Error. An error was found when issuing a
'socket' call to obtain a socket for a TCP/IP connection.
User Action: Examine the log file (BASEstar Open) or
stderr to determine the errno returned by the socket call. Then take
action based on the error found.
socketstatus, Error in obtaining a socket for address XX port X, errno
= X,
Explanation: Error. An error was found when issuing a
'socket' call to obtain a socket for a TCP/IP connection.
User Action: Look up the error and take action based
on the error found.
telnetiac, TELNET command XX received on address XX port X,
Explanation: Error. A TELNET command was received when
in binary mode. In binary mode no TELNET commands are expected.
User Action: No user action should be necessary. The
DAS will abort the connection and reset binary mode when it reconnects.
timeout, Timeout when reading from the port,
Explanation: Error. The device did not respond when
attempting to read a response from the device. The response could be
part of a read or a write operation.
User Action: Check all cabling to make sure that it is
properly shielded, grounded and seated. Verify that the communication
parameters are set up properly on both device and the host.
ttbreakerror, An error occurred when sending a break to a port,
Explanation: Error. An error was returned when sending
a break to the port.
User Action: Examine the log file (BASEstar Open) or
stderr to determine the error that occurred. Then take action based on
the error found.
ttbreakstatus, Errno for port XX returned from tcsendbreak () = X,
Explanation: Error. An error was returned when sending
a break to the port.
User Action: Look up the error number to determine the
cause of the error and take appropriate action based on the error code.
ttcharerror, An error occurred when defining TT characteristics,
Explanation: Error. An error occurred when setting up
TT characteristics. The TT characteristics are set when a connection is
initiated with the VMD.
User Action: An error message detailing the error
should have been logged. Examine the error to determine the proper
corrective action.
ttcharstatus, Errno for address XX port X returned from tcgetattr () or
tcsetattr () = X,
Explanation: Error. An error occurred when defining
tty characteristics>
User Action: Look up the error number to determine the
cause of the error and take appropriate action based on the error code.
unexpectiac, An unexpected "IAC" was received while in TELNET binary
mode,
Explanation: Error. An "IAC" (Is A command) character
was received after a TELNET line was negotiated to transmit and receive
in binary mode. In binary mode, the only expected TELNET control
command is the IAC character itself.
User Action: No action should be necessary. The DAS
will abort the connection if this should occur and then attempt to
renegotiate binary transmission/reception when reconnecting.
wont, TELNET server refused to accept TELNET option,
Explanation: Error. The TELNET server responded with
"WON'T" to a request, "DO", for the requested TELNET option.
User Action: Enable the apropriate option on the
TELNET server or substitute a server that supports the requested option.
wontdobin, TELNET server refused to send binary data,
Explanation: Error. The TELNET server responded with
"WON'T" to a request, "DO", for the server to send binary data (TELNET
option RFC 856).
User Action: Enable binary mode transmission on the
TELNET server or substitute a server that supports binary mode
transmission/reception.