multifunction-rio-user-manual.pdf - 第57页

Appendix A Connecting I/O Signals

Multifunction Reconfigurable I/O User Manual A-6 ni.com

Connecting to 5B and SSR Analog Signal Conditioning

(NI 783x /784x /785x Only)

NI provides cables that allow you to connect signals from the

NI 783x/784x/785x directly to 5B backplanes for analog signal

conditioning and SSR backplanes for digital signal conditioning.

The NSC68-262650 cable connects the signals on the NI 783x/784x/785x

RMIO connector directly to 5B and SSR backplanes. This cable has a

68-pin male VHDCI connector on one end that plugs into the

NI 783x/784x/785x RMIO connector. The other end of this cable provides

two 26-pin female headers plus one 50-pin female header.

One of the 26-pin headers contains all the NI 783x/784x/785x analog input

signals. You can plug this connector directly into a 5B backplane for analog

input signal conditioning. The NI 783x/784x/785x AI<0..n> correspond to

the 5B backplane channels <0..n> in sequential order. Configure the AI

channels to use the NRSE input mode when using 5B signal conditioning.

The other 26-pin header contains all the NI 783x/784x/785x analog output

signals. You can plug this connector directly into a 5B backplane for AO

signal conditioning. The NI 783x/784x/785x AO<0..n> correspond to the

5B backplane channels <0..n> in sequential order.

The 50-pin header contains the 16 DIO lines available on the

NI 783x/784x/785x RMIO connector. You can plug this header directly into

an SSR backplane for digital signal conditioning. DIO lines <0..15>

correspond to the 5B backplane Slots <0..15> in sequential order.

The 5B connector pinouts are compatible with 8-channel 5B08 backplanes

and 16-channel 5B01 backplanes. The NI 7830 can accept analog

input from the first four channels of a 16-channel backplane.

The NI 7831/7833/784x/785x can accept analog input from the

first eight channels of a 16-channel backplane. The SSR connector pinout

is compatible with 8-, 16-, 24-, and 32-channel SSR backplanes. You can

connect to an SSR backplane containing a number of channels unequal to

the 16 DIO lines available on the 50-pin header. In this case, you have

access to only the channels that exist on both the SSR backplane and the

NSC68-262650 cable 50-pin header.

Appendix A Connecting I/O Signals

Figure A-3 shows the connector pinouts when using the NSC68-262650

cable.

Figure A-3. Connector Pinouts when Using NSC68-262650 Cable

Connecting to SSR Digital Signal Conditioning

NI provides cables that allow you to connect signals from the NI 78xx

directly to SSR backplanes for digital signal conditioning.

The NSC68-5050 cable connects the signals on the NI 78xx RDIO

connectors directly to SSR backplanes for digital signal conditioning. This

cable has a 68-pin male VHDCI connector on one end that plugs into the

NI 78xx RDIO connectors. The other end of this cable provides

two 50-pin female headers.

2

4

6

8

10

12

14

16

18

20

22

24

26

1

3

5

7

9

11

13

15

17

19

21

23

25

AO0

AOGND0

AO1

AO2

AOGND2

AO3

AO4

AOGND4

AO5

AO6

AOGND6

AO7

No

Connect

No

Connect

No

Connect

AOGND1

No

Connect

No

Connect

AOGND3

No

Connect

No

Connect

AOGND5

No

Connect

No

Connect

AOGND7

No

Connect

2

4

6

8

10

12

14

16

18

20

22

24

26

1

3

5

7

9

11

13

15

17

19

21

23

25

AI0+

AIGND0

AI1+

AI2+

AIGND2

AI3+

AI4+

AIGND4

AI5+

AI6+

AIGND6

AI7+

AISENSE

AI0–

AI1–

AIGND1

AI2–

AI3–

AIGND3

AI4–

AI5–

AIGND5

AI6–

AI7–

AIGND7

No

Connect

AI 0–7 Connector

Pin Assignment

2

4

6

8

10

12

14

16

18

20

22

24

26

28

30

32

34

36

38

40

42

44

46

48

50

1

3

5

7

9

11

13

15

17

19

21

23

25

27

29

31

33

35

37

39

41

43

45

47

49

No

Connect

No

Connect

No

Connect

No

Connect

No

Connect

No

Connect

No

Connect

No

Connect

DIO15

DIO14

DIO13

DIO12

DIO11

DIO10

DIO9

DIO8

DIO7

DIO6

DIO5

DIO4

DIO3

DIO2

DIO1

DIO0

+5V

No

Connect

No

Connect

No

Connect

No

Connect

No

Connect

No

Connect

No

Connect

No

Connect

No

Connect

No

Connect

No

Connect

No

Connect

No

Connect

No

Connect

No

Connect

No

Connect

No

Connect

DGND

DIO 0–15 Connector

Pin Assignment

AO 0–7 Connector

Pin Assignment

Appendix A Connecting I/O Signals

Multifunction Reconfigurable I/O User Manual A-8 ni.com

You can plug each of these 50-pin headers directly into an 8-, 16-, 24-,

or 32-channel SSR backplane for digital signal conditioning. One of the

50-pin headers contains DIO<0..23> from the NI 78xx RDIO connector.

These lines correspond to Slots <0..23> on an SSR backplane in sequential

order. The other 50-pin header contains DIO<24..39> from the NI 78xx

RDIO connector. These lines correspond to Slots <0..15> on an SSR

backplane in sequential order. You can connect to an SSR backplane

containing a number of channels unequal to the number of lines on the

NSC68-5050 cable header. In this case, you have access only to the

channels that exist on both the SSR backplane and the NSC68-5050 cable

header you are using.

Figure A-4 shows the connector pinouts when using the NSC68-5050

cable.

Figure A-4. Connector Pinouts when Using the NSC68-5050 Cable

2

4

6

8

10

12

14

16

18

20

22

24

26

28

30

32

34

36

38

40

42

44

46

48

50

1

3

5

7

9

11

13

15

17

19

21

23

25

27

29

31

33

35

37

39

41

43

45

47

49

DIO23

DIO22

DIO21

DIO20

DIO19

DIO18

DIO17

DIO16

DIO15

DIO14

DIO13

DIO12

DIO11

DIO10

DIO9

DIO8

DIO7

DIO6

DIO5

DIO4

DIO3

DIO2

DIO1

DIO0

+5V

No Connect

DGND

2

4

6

8

10

12

14

16

18

20

22

24

26

28

30

32

34

36

38

40

42

44

46

48

50

1

3

5

7

9

11

13

15

17

19

21

23

25

27

29

31

33

35

37

39

41

43

45

47

49

No Connect

DIO39

DIO38

DIO37

DIO36

DIO35

DIO34

DIO33

DIO32

DIO31

DIO30

DIO29

DIO28

DIO27

DIO26

DIO25

DIO24

+5V

No Connect

DGND

DIO 0–23 Connector

Pin Assignment

DIO 24–39 Connector

Pin Assignment