7: Setup Mode: Channel Configuration
Pack control settings are enabled in Flush Mode. Set this value to 00 if you do not
need specific functions.
Note: All bit positions in the table that are blank represent “don’t care” bits, for t hat
particular option, which can be set to either a 0 or 1 value.
Table 7-11. 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
Interval: 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
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 ms.
Trailing Characters In some applications, CRC, Checksum, or other trailing characters f ollow the end-of-
sequence character; this option helps to adapt frame transmission to the f rame
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 inter prets
them independently.
If Send Immediately After Characters is not set, any characters alread y in the
serial buffer are included in the transmission after a "transmit" conditio n is found.
If this option is set, the unit sends immediately after recognizing the tr ansmit
condition (sendchar or timeout).
Note: A transmission might occur if status information needs to be exchanged or an
acknowledgment needs to be sent.
xPico User Guide 52