Low-Cost Industrial Digital I/O – 30 V, Bank Isolated
Connect Sensors Directly with Isolation
Isolation is a form of built-in signal conditioning that provides several
Glitch-Free Startup with Programmable
Power-Up States
advantages, such as an extended voltage range and direct connection
With programmable power-up states, you can configure the initial output
to industrial sensors and actuators. Isolation also improves signal quality states of the digital I/O device in software to ensure glitch-free operations
and protects computer circuitry. It physically and electrically separates
two parts of a circuit, which breaks ground loops, improves common-mode
when connected to industrial actuators such as pumps, valves, motors,
and relays. The digital I/O device holds these I/O states after receiving
voltage and noise rejection, and permits the two parts of the circuit to be power, so your computer can boot and your software application can
at different voltage levels. Many industrial applications require isolation begin running. Programmable power-up states are glitch-free, meaning
to protect the electronics from transient voltage spikes and provide greater the outputs never go through an incorrect state during power up.
common-mode noise rejection in electrically noisy environments containing
machinery and inductive loads. In bank-to-bank isolated devices, such as an
NI 651x, each bank (or groupꢂ of several channels shares the same ground
but is isolated from other banks.
You can configure each digital line as high-output or low-output. The
digital I/O device stores the settings in onboard nonvolatile memory and
implements the power-up states automatically after power is applied to
the device.
Oscillator
Detect and Recover with Digital I/O Watchdogs
NI digital I/O watchdogs provide protection against a wide variety
of fault conditions:
CPLD
Voltage
Voltage
• Computer crash – total OS crash
Darlington Arrays
Photocouplers
• Application crash – software application ceases to respond
• Vriver crash – device driver ceases to respond
• PCI bus failure – communications cease to respond
MiniMITE 1
FPGA
Photocouplers
Flash
Figure 1. NI 651x Hardware Block Viagram
P0.0
P0.1
P0.2
P0.3
P0.4
P0.5
P0.6
P0.7
P0.COM
P0.COM
P0.COM
P0.COM
P2.0
P2.1
P2.2
P2.3
P2.4
P1.0
P1.1
P1.2
P1.3
P1.4
P1.5
P1.6
P1.7
P1.COM
P1.COM
P1.COM
P1.COM
P3.0
P3.1
P3.2
P3.3
P3.4
P0.0
P0.1
P0.2
P0.3
P0.4
P0.5
P0.6
P0.7
P0.COM
P0.COM
P0.COM
P0.COM
P2.0
P2.1
P2.2
P2.3
P2.4
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
P1.0
P1.1
P1.2
P1.3
P1.4
P1.5
P1.6
P1.7
P1.COM
P1.COM
P1.COM
P1.COM
P3.0
P3.1
P3.2
P3.3
P3.4
P3.5
P3.6
P3.7
P0.0
P0.1
P0.2
P0.3
P0.4
P0.5
P0.6
P0.7
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
P1.0
P1.1
P1.2
P1.3
P1.4
P1.5
P1.6
P1.7
P0.0
P0.1
P0.2
P0.3
P0.4
P0.5
P0.6
P0.7
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
P1.0
P1.1
P1.2
P1.3
P1.4
P1.5
P1.6
P1.7
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
1
2
P0.0
P0.2
P0.4
P0.6
COM
P1.1
P1.3
P1.5
P1.7
P2.0
P2.2
P2.4
P2.6
COM
P3.1
P3.3
P3.5
P3.7
COM
20
21
22
23
24
P0.1
P0.3
P0.5
P0.7
P1.0
3
P0.COM (P0.GND)
P0.VCC
P0.VCC
P0.VCC
P2.0
P1.COM (P1.GND)
P1.VCC
P1.VCC
P1.VCC
P3.0
P3.1
P3.2
P3.3
P3.4
P0.COM (P0.VCC)
P0.GND
P0.GND
P0.GND
P2.0
P1.COM (P1.VCC)
P1.GND
P1.GND
P1.GND
P3.0
P3.1
P3.2
P3.3
P3.4
4
5
P2.1
P2.2
P2.3
P2.4
P2.5
P2.6
P2.7
P2.1
P2.2
P2.3
P2.4
P2.5
P2.6
P2.7
6
25 P1.2
26 P1.4
27 P1.6
28 COM
29 P2.1
30 P2.3
31 P2.5
32 P2.7
P2.5
P2.6
P2.7
P3.5
P3.6
P3.7
P3.5
P3.6
P3.7
P2.5
P2.6
P2.7
P3.5
P3.6
P3.7
7
8
P2.COM
P2.COM
P2.COM
P2.COM
NC
P4.0
P4.1
P4.2
P4.3
P4.4
P4.5
P4.6
P4.7
P4.COM
P4.COM
P4.COM
P4.COM
P6.0
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
P3.COM
P3.COM
P3.COM
P3.COM
NC
P5.0
P5.1
P5.2
P5.3
P5.4
P5.5
P5.6
P5.7
P5.COM
P5.COM
P5.COM
P5.COM
P7.0
P2.COM (P2.VCC)
P2.GND
P2.GND
P2.GND
NC
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
P3.COM (P3.VCC)
P3.GND
P3.GND
P3.GND
NC
P5.0
P5.1
P5.2
P5.3
P5.4
P5.5
P5.6
P5.7
P2.COM
P2.COM
P2.COM
P2.COM
NC
P4.0
P4.1
P4.2
P4.3
P4.4
P4.5
P4.6
P4.7
P3.COM
P3.COM
P3.COM
P3.COM
NC
P5.0
P5.1
P5.2
P5.3
P5.4
P5.5
P5.6
P5.7
P2.COM (P2.GND)
P2.VCC
P2.VCC
P2.VCC
NC
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
P3.COM (P3.GND)
P3.VCC
P3.VCC
P3.VCC
NC
P5.0
P5.1
P5.2
P5.3
P5.4
P5.5
P5.6
P5.7
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
9
10
11
12
13
14
15
16
17
18
19
P4.0
P4.1
P4.2
P4.3
P4.4
P4.5
P4.6
P4.7
P4.0
P4.1
P4.2
P4.3
P4.4
P4.5
P4.6
P4.7
P4.COM (P4.GND)
P4.VCC
P4.VCC
P4.VCC
P6.0
P5.COM (P5.GND)
P5.VCC
P5.VCC
P5.VCC
P7.0
P4.COM (P4.GND)
P4.VCC
P4.VCC
P4.VCC
P6.0
P5.COM (P5.GND)
P5.VCC
P5.VCC
P5.VCC
P7.0
P4.COM (P4.VCC)
P4.GND
P4.GND
P4.GND
P6.0
P5.COM (P5.VCC)
P5.GND
P5.GND
P5.GND
P7.0
P3.0
P3.2
P3.4
P3.6
COM
33
34
35
36
37
P6.1
P6.2
P6.3
P6.4
P6.5
39
40
41
42
43
44
45
46
47
48
49
50
89
90
91
92
93
94
95
96
97
98
99
100
P7.1
P7.2
P7.3
P7.4
P7.5
P7.6
P7.7
P7.COM
P7.COM
P7.COM
P7.COM
NC
P6.1
P6.2
P6.3
P6.4
P6.5
P7.1
P7.2
P7.3
P7.4
P7.5
P7.6
P7.7
P6.1
P6.2
P6.3
P6.4
P6.5
39
40
41
42
43
44
45
46
47
48
49
50
89
90
91
92
93
94
95
96
97
98
99
100
P7.1
P7.2
P7.3
P7.4
P7.5
P7.6
P7.7
P6.1
P6.2
P6.3
P6.4
P6.5
39
40
41
42
43
44
45
46
47
48
49
50
89
90
91
92
93
94
95
96
97
98
99
100
P7.1
P7.2
P7.3
P7.4
P7.5
P7.6
P7.7
39
40
41
42
43
44
45
46
47
48
49
50
89
90
91
92
93
94
95
96
97
98
99
100
P6.6
P6.7
P6.6
P6.7
P6.6
P6.7
P6.6
P6.7
P6.COM
P6.COM
P6.COM
P6.COM
NC
P6.COM (P6.GND)
P6.VCC
P6.VCC
P6.VCC
P6.+5V
P7.COM (P7.GND)
P7.VCC
P7.VCC
P7.VCC
P7.+5V
P6.COM (P6.GND)
P6.VCC
P6.VCC
P6.VCC
P6.+5V
P7.COM (P7.GND)
P7.VCC
P7.VCC
P7.VCC
P7.+5V
P6.COM (P6.VCC)
P6.GND
P6.GND
P6.GND
P6.+5V
P7.COM (P7.VCC)
P7.GND
P7.GND
P7.GND
P7.+5V
NI 651ꢀ
NI 6511
NI 6512
NI 6513
NI 6514
Figure 2. NI 651ꢀ, NI 6511, NI 6512, NI 6513, and NI 6514 Connectors
BUY ONLINE at ni.com or CALL 800 813 3693 (U.S.)
2
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