B: Network Configuration Using UDP
XPress™ DR Industrial Device Server User Guide
80
Disconnect Mode Option
7 6
5
4 3 2
1 0
Hard disconnect
(3)
0
Disable hard disconnect
1
State LED off with connection
(4)
1
Disconnect with EOT (^D)
(5)
1
1. The XPress DR will send the "Terminal Type" upon an outgoing connection.
2. A password is required for a connection to the serial port from the network.
3. The TCP connection will close even if the remote site does not acknowledge the disconnection.
4. When there is a network connection to or from the serial port, the state LED will turn off instead of blink.
5. When Ctrl D or Hex 04 are detected, the connection is dropped. Both Telnet mode and Disconnect with EOT
must be enabled for Disconnect with EOT to function properly. Ctrl D will only be detected going from the serial
port to the network.
6. DTR hardwired to +12VDC. This option is disabled in the XPress DR.
Note:
See Table 11-1 Binary to Hexadecimal Conversion Table.
Flush Mode (Buffer Flushing)
Using this parameter, you can control line handling and network buffers with connection startup
and disconnect. You can also select between two different packing algorithms. Use the following
table to select Flush Mode options:
Table B-11 Flush Mode Options
Function
7
6
5
4
3 2 1
0
Input Buffer (Serial to Network)
Clear with a connection that is initiated from the
XPress DR to the network
1
Clear with a connection initiated from the network to
the XPress DR
1
Clear when the network connection to or from the
XPress DR is disconnected
1
Output Buffer (Network to Serial)
Clear with a connection that is initiated from the
XPress DR to the network
1
Clear with a connection initiated from the network to
the XPress DR
1
Clear when the network connection to or from the
XPress DR is disconnected
1
Alternate Packing Algorithm (Pack Control)
Enable
1
Note:
See Table 11-1 Binary to Hexadecimal Conversion Table.