User manual

Copyright © Dr Robot Inc. 2006
109
instead of blinking.
(5) When Ctrl D or Hex 04 is detected, the connection is dropped. Both Telnet mode and
Disconnect
with EOT must be enabled for Disconnect with EOT to function properly. Ctrl D
is only
detected going from the serial port to the network.
(6) When modem_control_in transitions from a high state
to a low state, the network
connection to or from the serial port drops.
Flush Mode
The FlushMode (buffer flushing) parameter controls line handling and network buffers with
connection startup and disconnect.
FlushMode ( 0) ?
Select between two different packing algorithms (the current configuration is displayed
within the parentheses). Available Flush Mode options are:
Table IV.14 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 device to the
network
1
Clear with a connection initiated from
the network to the device
1
Clear when the network connection
to or from the device is disconnected
1
Output Buffer (Network to Serial)
Clear with a connection that is
initiated from the device to the
network
1
Clear with a connection initiated from
the network to the device
1
Clear when the network connection
to or from the device is disconnected
1
Alternate Packing Algorithm (Pack Control)
Enable 1
Pack Control
The packing algorithm defines 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. 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. Pack
control settings are enabled in Flush Mode. Set this value to 00 if specific functions
are not needed.
Table IV.15 Pack Control Options
Option 7 6 5 4 3 2 1 0
Packing Interval
Interval: 12ms 0 0
Interval: 52ms 0 1
Interval: 250ms 1 0