YASKAWA MP920 User Manual page 171

Status
No Error
Socket Generation Error
Local Station Port Number
Error
Socket Attribute Change
Error
Connection Error
(M-SND)
Connection Error
(M-RCV)
System Error
Data Sending Error
(TCP)
Data Sending Error
(UDP)
Data Receiving Error
(TCP)
Data Receiving Error
(UDP)
Socket Option Change Er-
ror
Data Conversion Error
8. Error Status
Displays the error details when an error has occurred in the transmission status.
Table 7.7 Error Status
Meaning
No error
System error
Local station port number setting error.
(Binds the same address during disconnection of
the TCP connection.)
System error (with TCP settings)
Connection error
(When active open mode was used in the TCP
settings, the connection was rejected by a remote
station.)
Connection error
(When passive open mode is used in the TCP
settings)
System error
Data sending error
(There is no remote station in the TCP settings,
or the remote station has not been started up.)
Data sending error (with UDP settings)
Data receiving error
(A request to disconnect the connection was
received from the remote station in the TCP set-
tings.)
Data receiving error (with UDP settings)
System error
Data conversion error
(Data conversion failed in MEMOBUS and
MELSEC-A communications.)
9. Send Count (Transmission Line Counter)
Displays the amount of data (number of packets) transmitted to the remote station.
10.Receive Count (Reception Path Counter)
Displays the amount of data (number of packets) received from the remote station.
7-25
7.5 CP-218 Transmission Definitions
Remarks
-
Socket generation failure
1. Binding error: Port number duplication
2. When the ABORT function was executed, a
binding error occurred during disconnection.
ABORT → COMPLETE → after 1 minute
→ Error occurs if EXECUTE sequence is
executed within 1 minute.
3. The same connection was executed by
another function before Connect completion.
An error occurred while the socket attributes
were being set.
1. This error occurs when M-SND → Connect
→ Reset.
2. This error occurs if a retry is performed
when the line is disconnected, and after one
minute (default) the next retry also fails.
M-RCV accept error
A socket polling (select) error occurred during
data reception.
A response transmission error occurred with M-
RCV. This also occurred with M-SND.
There is no transmission destination, or TCP
only when the transmission destination is reboo-
ted.
A request to send was issued by a non-existent
socket.
The connection was disconnected by the remote
station.
(Normally, this also occurs after close processing
is performed.)
Receive From was executed for a non-existent
socket.
An error occurred while the socket option was
being changed.
Protocol conversion error
7