Expand the Columns using a TB-2640B/2641B/2642B/2643B/2644B/2645B

The column expansion procedure is the same for all of the terminal block modules with two identical row connection headers. This includes the NI TB-2640B/2641B/2642B/2643B/2644B/2645B.

Note The NI TB-2645B requires two row ribbon cables for matrix expansion.

Depending on your terminal block module, use the appropriate row ribbon cable header as specified in the following table:

Terminal Block Module Row Connection Header 1 Row Connection Header 2
NI TB-2640B J4 J5
NI TB-2641B J4 J5
NI TB-2642B J8 J9
NI TB-2643B J4 J5
NI TB-2644B J4 J5
NI TB-2645B Cable 1 - J4 Cable 1 - J5
Cable 2 - J6 Cable 2 - J7
Note For the NI TB-2645B, do not connect a row ribbon cable from a Cable 1 header to a Cable 2 header.

Complete the following steps to expand the matrices of the PXIe-2532B:

  1. Connect one end of the ribbon cable to either row connection header on one of the terminal blocks.
  2. Connect the other end of the ribbon cable to either row connection header on the other terminal block.

    For example, the following figure illustrates how to use ribbon cables for multiple NI TB-2640B modules to connect rows and expand the number of columns.

    Figure 1. TB-2640B Column Expansion

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