Lantronix XPress-DR XPress-DR / XPress-DR-IAP - User Guide - Page 69

Pack Control, Table 18 - Pack Control Options

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Configure 3.6.10 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. Pack control settings are enabled in Flush Mode. Set this value to 00 if specific functions are not needed. Note: See Table 39 - Binary to Hexadecimal Conversion Table. Table 18 - Pack Control Options Option 7 6 5 4 3 2 1 0 Idle Time Force transmit: 12ms Force transmit: 52ms Force transmit: 250ms Force transmit: 5sec Trailing Characters None One Two Send Characters 2-Byte Send Character Sequence Send Immediately After Send chars 0 0 0 1 1 0 1 1 0 0 0 1 1 0 1 1 Idle Time: Idle time to "Force transmit" defines how long the unit should wait before sending accumulated characters. This wait period is between characters. If there is an idle period between characters equal to the force transmit set, then the unit will package up the serial data currently in the buffer and send it to the network. Trailing Characters: In some applications, CRC, Checksum, or other trailing characters follow the end-of-sequence character; this option helps to adapt frame transmission to the frame boundary. DSTni-XPress DR User Guide 3-23

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Configure
3.6.10 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.
Pack control settings are enabled in Flush Mode. Set this value to 00 if specific functions are
not needed.
Note:
See Table 39 - Binary to Hexadecimal Conversion Table.
Table 18 - Pack Control Options
Option
7
6
5
4
3
2
1
0
Idle Time
Force transmit: 12ms
0
0
Force transmit: 52ms
0
1
Force transmit: 250ms
1
0
Force transmit: 5sec
1
1
Trailing Characters
None
0
0
One
0
1
Two
1
0
Send Characters
2-Byte Send Character
Sequence
1
Send Immediately After
Send chars
1
Idle Time:
Idle time to "Force transmit" defines how long the unit should wait before
sending accumulated characters. This wait period is between characters. If there is an idle
period between characters equal to the force transmit set, then the unit will package up the
serial data currently in the buffer and send it to the network.
Trailing Characters:
In some applications, CRC, Checksum, or other trailing characters
follow the end-of-sequence character; this option helps to adapt frame transmission to the
frame boundary.
DSTni-XPress DR User Guide
3-23