2-Wire 4x32 Matrix

Module software name: 2529/2-Wire 4x32 Matrix (NISWITCH_TOPOLOGY_2529_2_WIRE_4X32_MATRIX)

Hardware Diagram


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Making a Connection

In this topology, you can connect any row to any column. When connecting signals to r1, you would connect them to R1+ and R1– in the terminal block. When connecting signals to c0, you would connect them to C0+ and C0– in the terminal block.

Connect the channels using the niSwitch Connect Channels VI or the niSwitch_Connect. For example, to connect row 1 to column 1, call the niSwitch Connect Channels VI or the niSwitch_Connect function with the channel 1 parameter set to r1 and the channel 2 parameter set to c1.

When scanning the module in 4×32 matrix topology, a typical scan list entry could be r1->c20;. This entry routes the signal connected to row 1 to column 20.

Terminal Block Connections


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The NI TB-2634 and NI TB-2636 terminal blocks configure the module as a 2-wire 4×32 matrix.

The following table lists the module pins and their associated column connections.

Connection Pins Connection Pins Connection Pins Connection Pins
C0+ B24 C8+ B19 C16+ B14 C24+ B9
C0- A24 C8- A19 C16- A14 C24- A9
C1+ B23 C9+ B18 C17+ B13 C25+ B8
C1- A23 C9- A18 C17- A13 C25- A8
C2+ B22 C10+ B17 C18+ B12 C26+ B7
C2- A22 C10- A17 C18- A12 C26- A7
C3+ B21 C11+ B16 C19+ B11 C27+ B6
C3- A21 C11- A16 C19- A11 C27- A6
C4+ C24 C12+ C19 C20+ C14 C28+ C9
C4- D24 C12- D19 C20- D14 C28- D9
C5+ C23 C13+ C18 C21+ C13 C29+ C8
C5- D23 C13- D18 C21- D13 C29- D8
C6+ C22 C14+ C17 C22+ C12 C30+ C7
C6- D22 C14- D17 C22- D12 C30- D7
C7+ C21 C15+ C16 C23+ C11 C31+ C6
C7- D21 C15- D16 C23- D11 C32- D6

The following table lists the module pins that the NI TB-2634 and NI TB-2636 short and the row connections created.

Connection Pins Connection Pins Connection Pins Connection Pins
R0+ B25,B15 R1+ C25,C15 R2+ B20,B10 R3+ C20,C10
R0- A25,A15 R1- D25,D15 R2- A20,A10 R3- D20,D10