Choose the interface for your Configurable I/O modules and Simulink Programmable I/O modules. Extend the interface using I/O interface extensions if needed.

Find below, the I/O connectivity options you can leverage using the I/O interfaces, while preserving the fast closed-loop sample rate of your real-time application.

The I/O connectivity provided by the I/O interface and the I/O interface extension is represented by Simulink driver blocks.

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I/O Interface

Select the I/O interface for your I/O module of the IO33X- and IO34X-series.

For the IO33X I/O modules, you can choose only one of the following I/O interfaces.

For the IO34X I/O modules, you may choose up to two I/O interfaces. Note, the second I/O interface option takes up an additional I/O slot in your test system.

I/O Interface	I/O connectivity	Supported I/O module
IO33X-1-LV	64x LVTTL	IO332, IO333
IO33X-2	30x RS485	IO332, IO333
IO33X-3	16x CMOS 22x RS485	IO332, IO333
IO33X-4	30x LVDS	IO332, IO333
IO33X-6	16x Analog Input 8x Analog Output 16x TTL	IO332, IO333
IO34X-51	2x QSFP	IO342
IO34X-63	4x Analog I/O	IO342

I/O Interface Extension

Expand the interface of your I/O modules using I/O interface extensions. These are connected to the I/O module via high-speed digital lines or MGT (Multi-Gigabit Transceiver) lines. Depending on the I/O module, you can connect one or more I/O interface extensions.

I/O Interface Extension	I/O connectivity	Supported I/O module
IO3XX-21	56x TTL	IO316, IO317, IO318, IO324, IO325, IO332, IO333, IO333-SFP, IO334, IO335, IO336, IO342, IO344, IO352*
IO3XX-22	24x TTL 32x RS422/RS485	IO316, IO317, IO318, IO324, IO325, IO332, IO333, IO333-SFP, IO334, IO335, IO336, IO342, IO344, IO352*
IO3XX-24	2x Resolver Measurement channels 40x TTL 8x RS422/485	IO324, IO325, IO332, IO333, IO334, IO335, IO336
IO3XX-32	4x MGT	IO325, IO332, IO333, IO333-SFP, IO334, IO335, IO336, IO342, IO352