Digital Input module SM321

Description

This input module increases the number of inputs in the S7-300 controller from 8-64, depending on the module variation used. Apart from being compact, easy to use, and cost-effective, these modules are for isochronous mode use, for currents sourcing, or sinking.

Standard

SiemensDigital Input module SM321

The Siemens SM321 is an input module that enables the expansion for connecting standard switches for the S7-300 PLC controller.

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