MATLAB:CB-68LP Pinout

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NI CB-68LP
NI CB-68LPR

The National Instruments CB-68LP or CB-68LPR connection blocks allow for simple connections to NI data acquisition cards through a ribbon cable. They have screw-operated window connections that allow for quick connections to wires.

Mapping

The following chart lists the different connections as laid out on the National Instruments CB-68LP and CB-68LPR connection block when used in conjunction with the National Instruments PCI 6014e or 6221 Data Acquisition Card. The list under the table describes the most commonly used channels.

The most commonly used channels are:

  • ACH# - analog input channel number #
    • Note, in differential mode, ACH0-ACH7 measure the + terminal voltage while ACH8-ACH15 measure the - terminal voltage for channels 0-7, respectively.
    • Each voltage is measured with respect to AIGND
  • DAC#OUT - analog output channel number #
    • Each voltage is set relative to AOGND
  • DIO# - digital input/output (I/O) channel number # (6014e only)
    • Each voltage is measured or set relative to DGND
  • DIO#P@ - digital input/output (I/O) channel number # on port @ (6221 only)
    • Each voltage is measured or set relative to DGND
  • AIGND - ground (0 V) for the analog input channels
  • AOGND - ground (0 V) for the analog output channels
  • DGND - ground (0 V) for the digital I/O channels

Items in bold are the same for both cards; items in bold italics are functionally the same for both cards: Port 0 Digital I/O on the 6221 works the same as the Digital I/O on the 6014e. Each port can be configured as input or output - the individual channels in a port must all do the same thing. Note that the main places the cards differ is that the 6221 has a total of 24 DIO channels split among three ports while the 6014e only has 8 channels tied to a single port.


PCI 6014e

The following are the connections for the PCI 6014e card[1]:

CB-68LP

Click Expand at right to see the table.

68 ACH0 61 ACH12 15 DGND 08 +5V 01 FREQ_OUT
34 ACH8 27 AIGND 49 DIO2 42 GPCTR1_SRC 35 DGND
67 AIGND 60 ACH5 16 DIO6 9 DGND 2 GPCTR0_OUT
33 ACH1 26 ACH13 50 DGND 43 CONVERT 36 DGND
66 ACH9 59 AIGND 17 DIO1 10 TRIG2 3 GPCTR0_GATE
32 AIGND 25 ACH6 51 DIO5 44 DGND 37 GPCTR0_SRC
65 ACH2 58 ACH14 18 DGND 11 TRIG1 4 DGND
31 ACH10 24 AIGND 52 DIO0 45 EXTSTROBE 38 STARTSCAN
64 AIGND 57 ACH7 19 DIO4 12 DGND 5 WFTRIG
30 ACH3 23 ACH15 53 DGND 46 SCANCLK 39 DGND
63 ACH11 56 AIGND 20 RESERVED 13 DGND 6 UPDATE
29 AIGND 22 DAC0OUT 54 AOGND 47 DIO3 40 GPCTR1_OUT
62 AISENSE 55 AOGND NA NA 14 +5V 7 DGND
28 ACH4 21 DAC1OUT NA NA 48 DIO7 41 GPCTR1_GATE

CB-68LPR

Click Expand at right to see the table.

01 FREQ_OUT NA 68 ACH0
35 DGND NA 34 ACH8
2 GPCTR0_OUT 13 DGND 67 AIGND
36 DGND 47 DIO3 33 ACH1
3 GPCTR0_GATE 14 +5V 66 ACH9
37 GPCTR0_SRC 48 DIO7 32 AIGND
4 DGND 15 DGND 65 ACH2
38 STARTSCAN 49 DIO2 31 ACH10
5 WFTRIG 16 DIO6 64 AIGND
39 DGND 50 DGND 30 ACH3
6 UPDATE 17 DIO1 63 ACH11
40 GPCTR1_OUT 51 DIO5 29 AIGND
7 DGND 18 DGND 62 AISENSE
41 GPCTR1_GATE 52 DIO0 28 ACH4
08 +5V 19 DIO4 61 ACH12
42 GPCTR1_SRC 53 DGND 27 AIGND
9 DGND 20 RESERVED 60 ACH5
43 CONVERT 54 AOGND 26 ACH13
10 TRIG2 21 DAC1OUT 59 AIGND
44 DGND 55 AOGND 25 ACH6
11 TRIG1 22 DAC0OUT 58 ACH14
45 EXTSTROBE 56 AIGND 24 AIGND
12 DGND NA 57 ACH7
46 SCANCLK NA 23 ACH15

PCI 6221

The following are the connections for the PCI 6221 card[2]:

CB-68LP

Click Expand at right to see the table.

68 ACH0 61 ACH12 15 DGND 08 +5V 01 DIO6P2
34 ACH8 27 AIGND 49 DIO2P0 42 DIO3P1 35 DGND
67 AIGND 60 ACH5 16 DIO6P0 9 DGND 2 DIO4P2
33 ACH1 26 ACH13 50 DGND 43 DIO2P1 36 DGND
66 ACH9 59 AIGND 17 DIO1P0 10 DIO1P1 3 DIO1P2
32 AIGND 25 ACH6 51 DIO5P0 44 DGND 37 DIO0P2
65 ACH2 58 ACH14 18 DGND 11 DIO0P1 4 DGND
31 ACH10 24 AIGND 52 DIO0P0 45 DIO2P2 38 DIO7P1
64 AIGND 57 ACH7 19 DIO4P0 12 DGND 5 DIO6P1
30 ACH3 23 ACH15 53 DGND 46 DIO3P2 39 DIO7P2
63 ACH11 56 AIGND 20 RESERVED 13 DGND 6 DIO5P1
29 AIGND 22 DAC0OUT 54 AOGND 47 DIO3P0 40 DIO5P2
62 AISENSE 55 AOGND NA NA 14 +5V 7 DGND
28 ACH4 21 DAC1OUT NA NA 48 DIO7P0 41 DIO4P1

CB-68LPR

Click Expand at right to see the table.

01 DIO6P2 NA 68 ACH0
35 DGND NA 34 ACH8
2 DIO4P2 13 DGND 67 AIGND
36 DGND 47 DIO3P0 33 ACH1
3 DIO1P2 14 +5V 66 ACH9
37 DIO0P2 48 DIO7P0 32 AIGND
4 DGND 15 DGND 65 ACH2
38 DIO7P1 49 DIO2P0 31 ACH10
5 DIO6P1 16 DIO6P0 64 AIGND
39 DIO7P2 50 DGND 30 ACH3
6 DIO5P1 17 DIO1P0 63 ACH11
40 DIO5P2 51 DIO5P0 29 AIGND
7 DGND 18 DGND 62 AISENSE
41 DIO4P1 52 DIO0P0 28 ACH4
08 +5V 19 DIO4P0 61 ACH12
42 DIO3P1 53 DGND 27 AIGND
9 DGND 20 RESERVED 60 ACH5
43 DIO2P1 54 AOGND 26 ACH13
10 DIO1P1 21 DAC1OUT 59 AIGND
44 DGND 55 AOGND 25 ACH6
11 DIO0P1 22 DAC0OUT 58 ACH14
45 DIO2P2 56 AIGND 24 AIGND
12 DGND NA 57 ACH7
46 DIO3P2 NA 23 ACH15

Differential Channels

When the DAQ card is reading voltages in differential mode, two voltage measurements are required to actually measure a voltage difference. For the CB-68LP in conjunction with either the PCI 6014e or 6221 card, each differential input channel uses two lines - the line that is the same number as the channel is the + terminal and the line that is 8 higher than the channel is the - terminal. For example, taking a voltage on differential channel 4 would mean calculating the voltage difference between ACH4 on Line 28 and ACH12 on Line 61. The chart below shows the analog input channels but is labeled in terms of the positive and negative channels for differential mode:

CB 68-LP

Click Expand at right to see the table.

68 Channel 0 + 61 Channel 4 - 15 08 01
34 Channel 0 - 27 49 42 35
67 60 Channel 5 + 16 9 2
33 Channel 1 + 26 Channel 5 - 50 43 36
66 Channel 1 - 59 17 10 3
32 25 Channel 6 + 51 44 37
65 Channel 2 + 58 Channel 6 - 18 11 4
31 Channel 2 - 24 52 45 38
64 57 Channel 7 + 19 12 5
30 Channel 3 + 23 Channel 7 - 53 46 39
63 Channel 3 - 56 20 13 6
29 22 54 47 40
62 55 NA 14 7
28 Channel 4 + 21 NA 48 41

Notice that, for the most part, pairs are right next to each other. The one exception is where Channel 4 is split between the first and second columns.

CB-68LPR

Click Expand at right to see the table.

01 NA 68 Channel 0 -
35 NA 34 Channel 0 +
2 13 67
36 47 33 Channel 1 +
3 14 66 Channel 1 -
37 48 32
4 15 65 Channel 2 +
38 49 31 Channel 2 -
5 16 64
39 50 30 Channel 3 +
6 17 63 Channel 3 -
40 51 29
7 18 62
41 52 28 Channel 4 +
8 19 61 Channel 4 _
42 53 27
9 20 60 Channel 5 +
43 54 26 Channel 5 -
10 21 59
44 55 25 Channel 6 +
11 22 58 Channel 6 -
45 56 54
12 NA 57 Channel 7 +
46 NA 23 Channel 7 -

Notice that the pairs are always next to each other and run along the right side of the CB.

Remarks

The newest version of the DAQ toolbox limits the 6014e cards to sampling frequencies below that of which it is capable. To bring back the original functionality, edit:

  • C:\Program Files\MATLAB\R-----\toolbox\daq\daq\private\mwnidaq.ini

or

  • C:\Program Files\MATLAB\R-----\toolbox\daq\daq\private\mwnidaqmx.ini

to change the rates back.

Questions

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External Links

References

  1. NI 6013/6014 Family Specifications , p. 10. Retrieved 9/19/2010
  2. Low-Cost M Series Multifunction Data Acquisition - 16-Bit, 250 kS/s, up to 80 Analog Inputs, Retrieved 9/19/2010