Anybus CompactCom 40 Common Ethernet, Design Manual

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Anybus Module Objects 66 (104)
Instance Attributes (Sockets #1...Max. no. of instances)
Extended
# Name Access Data Type Description
1 Socket Type Get UINT8 Value: Socket Type
00h SOCK_STREAM, NONBLOCKING (TCP)
01h SOCK_STREAM, BLOCKING (TCP)
02h SOCK_DGRAM, NONBLOCKING (UDP)
03h SOCK_DGRAM, BLOCKING (UDP)
2 Port Get UINT16 Local port that the socket is bound to
3 Host IP Get UINT32 Host IP address, or 0 (zero) if not connected
4 Host port Get UINT16 Host port number, or 0 (zero) if not connected
5 TCP State Get UINT8 State (TCP sockets only):
Value State/Description
00h CLOSED Closed
01h LISTEN Listening for connection
02h SYN_SENT Active, have sent and received SYN
03h SYN_RECEIVED Have sent and received SYN
04h ESTABLISHED Established.
05h CLOSE_WAIT Received FIN, waiting for close
06h FIN_WAIT_1 Have closed, sent FIN
07h CLOSING Closed exchanged FIN; await FIN ACK
08h LAST_ACK Have FIN and close; await FIN ACK
09h FIN_WAIT_2 Have closed, FIN is acknowledged
Ah TIME_WAIT Quiet wait after close
6 TCP RX bytes Get UINT16 Number of bytes in RX buffers (TCP sockets only)
7
TCP TX bytes Get UINT16 Number of bytes in TX buffers (TCP sockets only)
8 Reuse address Get/Set BOOL Socket can reuse local address
Value
1
0 Meaning
Enabled
Disabled (default)
9 Keep alive Get/Set BOOL Protocol probes idle connection (TCP sockets only).
If the Keep alive attribute is set, the connection will be probed
for the first time after it has been idle for 120 minutes. If a probe
attempt fails, the connection will continue to be probed at inter-
vals of 75s. The connection is terminated after 8 failed probe
attempts.
Value
1
0 Meaning
Enabled
Disabled (default)
10 IP Multicast TTL Get/Set UINT8 IP Multicast TTL value (UDP sockets only).
Default = 1.
11 IP Multicast Loop Get/Set BOOL IP multicast loop back (UDP sockets only)
Must belong to group in order to get the loop backed message
Value
1
0 Meaning
Enabled (default)
Disabled
12 (reserved)
13 TCP No Delay Get/Set BOOL Don’t delay send to coalesce packets (TCP).
Value
1
0 Meaning
Delay (default)
Don’t delay (turn off Nagle’s algorithm on socket)
14 TCP Connect
Timeout
Get/Set UINT16 TCP Connect timeout in seconds (default = 75s)
Anybus ® CompactCom ™ 40 Common Ethernet Design Guide HMSI-27–269 2.1