
SDS2100 User Guide
3: Configuring the Unit
Table 3-9. Disconnect Mode Options
Disconnect Mode Option
Bit 7 6 5 4
3 2 1 0
Disconnect with DSR drop
1
Ignore DSRa
0
Telnet mode and terminal type setup
1
1
Channel (port) password
2
1
Hard disconnect
3
0
Disable hard disconnect
1
State LED off with connection
4
1
Disconnect with EOT (^D)
5
1
1. The SDS 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.
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.
Note:
If you do not want to convert the binary numbers to hexadecimals
yourself, look up the values in
Table 6-5. Flush Mode Options
in the Binary
to Hexadecimal chapter.
Table 3-10. Flush Mode Options
Function
Bit 7 6 5 4 3 2 1 0
Input Buffer (Serial to Network)
Clear with active connection (from serial)
1
Clear with passive connection (from network)
1
Clear with disconnect
1
Output Buffer (Network to Serial)
Clear with active connection (from serial)
1
Clear with passive connection (from network)
1
Clear with disconnect
1
Alternate Packing Algorithm (Pack Control)
Enable
1
Pack Control
Two firmware-selectable packing algorithms define how and when packets are sent
to the network. The standard algorithm is optimized for applications in which the unit
is used in a local environment, allowing for very small delays for single characters
while keeping the packet count low. The alternate packing algorithm minimizes the
packet count on the network and is especially useful in applications in a routed Wide
Area Network (WAN). Adjusting parameters in this mode can economize the network
data stream.
38