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What is the Pinout for the TB-2630 when Configured for 1-Wire Dual 64x1 Topology?

Hardware: Switches>>Multiplexer/Matrix>>PXI-2530

Problem: The NI Switches Help documentation states that the TB-2630 terminal block should be used for the 1-Wire Dual 64x1 topology when using the 2530 switch. After reviewing the TB-2630 installation guide, there are only pinouts available for the 1-Wire 128x1, 2-Wire 64x1, and 4-Wire 32x1 topologies.

Solution: The pinout for the 1-Wire Dual 64x1 topology is the same as the 1-Wire 128x1 pinout with the addition of two more terminals. These termianls are:
  • 1WREF2 Used as the second reference pin for channels 64-127
  • COM4 used as the common terminal for channels 64-127
All other pins including channels 0-127, 1WREF0, and com0 remain the same.

Related Links: NI TB-2630 Installation Instructions

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Report Date: 04/19/2005
Last Updated: 05/06/2005
Document ID: 3KIB83PC

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