Error, fault and alarm codes of products - what each code means, its causes and what to do - read from the manufacturers’ manuals, with the manual page each answer comes from.
The CPU detected an unrecognized I/O device or address. The manual's first action is: “Create the I/O tables.”
CPU Unit service monitor error indicates a problem with the CPU unit's monitoring system. The manual's first action is: “Check the operating environment.”
The CPU Unit has detected a watchdog timer error. The manual's first action is: “Replace the CPU Unit.”
The socket was closed during an opening procedure. The manual lists no action for this code.
A communication error occurred with the remote node (ETIMEDOUT). No remote exists. The manual lists no action for this code.
A parameter error occurred at the remote IP address (EHOSTUNREACH). Incorrect router setting. The manual lists no action for this code.
A parameter error occurred at the remote IP address (ENETUNREACH). No network number in IP router table or incorrect router setting. The manual lists no action for this code.
A parameter error occurred at the remote IP address (EADNOTAVAIL). A parameter was specified incorrectly. An attempt was made to actively open local TCP port. The manual lists no action for this code.
A communication error occurred with the remote node (ECONNRESET). The manual lists no action for this code.
An error occurred (ECONNREFUSED). Passive remote is not available. The manual lists no action for this code.
Duplicate UDP port numbers are detected. The manual lists no action for this code.
A communication error occurred with the remote node (ECONNABORTED). The manual lists no action for this code.
Received ICMP data indicating protocol option error. The manual lists no action for this code.
An error occurred (EMSGSIZE). The manual lists no action for this code.
Internal buffer cannot be reserved due to high receive load (ENOBUFS). The manual's first action is: “There is too much load (traffic) on the Ethernet Unit. Check your user applications.”