Programming instructions
Chapter 5 Things You Should Know about Analog Input
LabVIEW Data Acquisition Basics Manual 5-16
©
National Instruments Corporation
To determine which AMUX-64T channels LabVIEW scans and the
scanning order, perform the following steps.
1. Locate the channel for each DAQ device channel in your channel list
in the DAQ Device Channel column in Table 5-3 or 5-4. Start with the
first device channel and continue through the list in your specified
channel order.
2. Read from left to right along the table row where you located the
channel number to find the AMUX-64T scanning order.
To read a single AMUX-64T channel, use channel specifier
AMy!x
. This
specifier returns data from channel x of the AMUX-64T with ID
y
. To read
more than one AMUX-64T channel, use channel specifier
OBx:y
. This
specifier returns data from the AMUX-64T channels that correspond to
device channel x through device channel
y
.
When the
channel list
contains a single AMUX-64T channel, you must
also specify the number of the AMUX-64T device, as shown in the
following table.
Table 5-4.
Scanning Order for Each DAQ Device Input Channel with Four AMUX-64Ts
DAQ
Device
Channel
AMUX-64T Channels
Device 1 Device 2 Device 3 Device 4
0
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
0, 1, 2, 3
4, 5, 6, 7
8, 9, 10, 11
12, 13, 14, 15
16, 17, 18, 19
20, 21, 22, 23
24, 25, 26, 27
28, 29, 30, 31
32, 33, 34, 35
36, 37, 38, 39
40, 41, 42, 43
44, 45, 46, 47
48, 49, 50, 51
52, 53, 54, 55
56, 57, 58, 59
60, 61, 62, 63
0, 1, 2, 3
4, 5, 6, 7
8, 9, 10, 11
12, 13, 14, 15
16, 17, 18, 19
20, 21, 22, 23
24, 25, 26, 27
28, 29, 30, 31
32, 33, 34, 35
36, 37, 38, 39
40, 41, 42, 43
44, 45, 46, 47
48, 49, 50, 51
52, 53, 54, 55
56, 57, 58, 59
60, 61, 62, 63
0, 1, 2, 3
4, 5, 6, 7
8, 9, 10, 11
12, 13, 14, 15
16, 17, 18, 19
20, 21, 22, 23
24, 25, 26, 27
28, 29, 30, 31
32, 33, 34, 35
36, 37, 38, 39
40, 41, 42, 43
44, 45, 46, 47
48, 49, 50, 51
52, 53, 54, 55
56, 57, 58, 59
60, 61, 62, 63
0, 1, 2, 3
4, 5, 6, 7
8, 9, 10, 11
12, 13, 14, 15
16, 17, 18, 19
20, 21, 22, 23
24, 25, 26, 27
28, 29, 30, 31
32, 33, 34, 35
36, 37, 38, 39
40, 41, 42, 43
44, 45, 46, 47
48, 49, 50, 51
52, 53, 54, 55
56, 57, 58, 59
60, 61, 62, 63