ProSoft Technology 5201-DFNT-DH485 - Manual (Page 14)

DH485 ♦ ProLinx Gateway Functional Overview
DH485 Interface Driver Manual
Page 14 of 44
ProSoft Technology, Inc.
August 27, 2009
Write CIF Data Area
0
.
.
243
Example #2
CIF Read DB Offset:
CIF Read Count:
CIF Write DB Offset:
-1
0
1000
Write CIF Data Area
Read CIF Data Area
Example #3
CIF Read DB Offset:
CIF Read Count:
CIF Write DB Offset:
1000
124
2000
0
123
124
243
0
.
.
243
Example #4
CIF Read DB Offset:
CIF Read Count:
CIF Write DB Offset:
-1
0
-1
Example 1 only uses CIF read data and utilizes the maximum read data area.
Example 2 only uses the CIF write data and utilizes the maximum write data
area.
Example 3 uses both CIF read and write data. 124 bytes of read data are used
and 120 bytes of write data are used.
Example 4 does not use the CIF data in the application.