6: Setup Mode: Channel Configuration
DeviceLinx™ XPort Direct/XChip Direct SoC User Guide
37
Table 6-9. Pack Control Options
Option
7
6
5
4
3
2
1
0
Packing Interval
Interval: 12 msec
0
0
Interval: 52 msec
0
1
Interval: 250 msec
1
0
Interval: 5 sec
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
Packing Interval
Packing Interval defines how long the unit should wait before sending accumulated
characters. This wait period is between successive network segments containing
data. For alternate packing, the default interval is 12 msec.
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.
Send Characters
If
2-Byte Send Character Sequence
is enabled, the unit interprets the
sendchars as a 2-byte sequence; if this option is not enabled, the unit
interprets them independently.
If
Send Immediately After Characters
is
not
set, any characters already in
the serial buffer are included in the transmission after a "transmit" condition is
found. If this option is set, the unit sends immediately after recognizing the
transmit condition (sendchar or timeout).
Note:
A transmission might occur if status information needs to be
exchanged or an acknowledgment needs to be sent.