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NI-9423 Getting Started NI-9423 Nomenclature In this article, the NI-9423 with screw terminal and NI-9423 with spring terminal are referred to inclusively as the NI-9423. The information in this document applies to all version of the NI-9423 unless otherwise specified.
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NI-9423. NI-9423 Signals Each channel of the NI-9423 has a DI terminal or pin to which you can connect voltage or current signals. The NI-9423 also has COM, a common terminal or pin that is internally connected to the isolated ground reference of the module.
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DI. An example of a sourcing-output device is an open collector PNP. Connect the output of the sourcing-output device to DI on the NI-9423. Connect the common of the external device to the COM terminal or pin.
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