VXi 320222-01 User Manual
Chapter 5
Programming Considerations
© National Instruments Corporation
5-11
VXI-MXI User Manual
MXIbus Link:
MXIbus #1
Device:
MXIbus Device A
Number of logical addresses required by device:
3
Range =
E0
–
E3
Round total number up to the next power of two:
4 (2
2
)
Size =
8-2 = 6
List other MXIbus links to this mainframe:
Number of logical addresses required by additional MXIbus links: +
0
Total number of logical addresses required by this device:
=
3
Range =
E0
–
E3
Round total number up to the next power of two:
* 4 (2
2
)
Size =
8-2 = 6
Device:
MXIbus Device B
Number of logical addresses required by device:
1
Range =
E4
Round total number up to the next power of two:
1 (2
0
)
Size =
8-0 = 8
List other MXIbus links to this mainframe:
Number of logical addresses required by additional MXIbus links: +
0
Total number of logical addresses required by this device:
=
1
Range =
E4
Round total number up to the next power of two:
*
1 (2
0
)
Size =
8-0 = 8
Device:
VXIbus Mainframe #2
Number of logical addresses required by device:
23
Range =
C0
–
DF
Round total number up to the next power of two:
32 (2
5
)
Size =
8-5 = 3
List other MXIbus links to this mainframe:
Number of logical addresses required by additional MXIbus links: +
0
Total number of logical addresses required by this device:
=
23
Range =
C0
–
DF
Round total number up to the next power of two:
*
32 (2
5
)
Size =
8-5 = 3
Device:
VXIbus Mainframe #3
Number of logical addresses required by device:
6
Range =
80
–
87
Round total number up to the next power of two:
8 (2
3
)
Size =
8-3 = 5
List other MXIbus links to this mainframe:
MXIbus #3
Number of logical addresses required by additional MXIbus links: +
32
Total number of logical addresses required by this device:
=
40
Range =
A0
–
BF
Round total number up to the next power of two:
*
64 (2
6
)
Size =
8-6 = 2
Device:
Number of logical addresses required by device:
Range =
Round total number up to the next power of two:
Size =
List other MXIbus links to this mainframe:
Number of logical addresses required by additional MXIbus links: +
Total number of logical addresses required by this device:
=
Range =
Round total number up to the next power of two:
*
Size =
Total Number of Logical Addresses Required:
101
(Add numbers after the "*")
Range =
80
–
FF
Round total number up to next power of two:
128 (2
7
)
Size =
8-7 = 1
Figure 5-8. Worksheet 2 for Example VXIbus/MXIbus System