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OPC-UA "black box" for 24v signals
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08/23/2017 - 06:19
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I'm looking to standardize collection of 24v digital signals from various types of machines that do not have a PLC that we can connect to directly. Is there any "black box" type of hardware on the market that can take electrical inputs and export as OPC-UA with built-in UA server? A simple small PLC prebuilt with OPC-UA server and configurable inputs.

One option I am looking at is to use S7-1200 with Matrikon and define a standard interface like that, but it is more complicated as it requires a PC hardware in addition to the S7.

It is important to keep the total cost down.

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