1-Wire Dual 8×32 Matrix

Software name: 2532/1-Wire Dual 8x32 Matrix (NISWITCH_TOPOLOGY_2532_1_WIRE_DUAL_8X32_MATRIX)

Hardware Diagram

The NI TB-2644B terminal block creates a 1-wire dual 8×32 matrix topology with the module.

Making a Connection

For bank 0, both the scanning command, b0r1->b0c1;, and the immediate operation, niSwitch Connect Channels VI or the niSwitch_Connect function with parameters b0r1 and b0c1, result in the following connection:

• signal connected to B0R1 is routed to B0C1

For bank 1, both the scanning command, b1r1->b1c1;, and the immediate operation, niSwitch Connect Channels VI or the niSwitch_Connect function with parameters b1r1 and b1c1, result in the following connection:

• signal connected to B1R1 is routed to B1C1

Terminal Block Connections

The NI TB-2644B terminal block connects banks of the module to create the 1-wire dual 8×32 matrix topology.

Column Pin Connections

The following table refers to the J3 connector on the NI TB-2644B.

The following table refers to the J2 connector on the NI TB-2644B.

Row Pin Connections

The NI TB-2644B provides two ribbon cable headers for row connection. Use one cable header to connect to your application. Use the other cable header for column expansion.

The following table lists the pin assignments for row connection.

Row Protection Bypass Header

Each row signal is isolated from the reed relays through a 100 Ω resistor. To bypass this resistor, install a jumper on the appropriate pins of the header indicated in the table below. The following table lists the appropriate jumper position for bypassing the resistor on each row signal.