5DCV TTL(such as USB-6501) to/from 24DCV PLC IO

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I am looking for converting device between 5V TTL, such as USB-6501 DIO signal, and 24DCV used in PLC DIO.

I use PLC to control test system, and use PC for DAQ.

By analyzing DAQ data, I need to cut into control sequence.

Also I like to keep records of system status, such as pump and motor running signals.

I like to communicate with PLC through DIO signals, so that, I do not need to care which manufacture or what model used.

I like to purchase converter board, not making one.

[crossrulz]

A quick Google search led me to this: 4Bit Optocoupler Isolator 5V to 24V Level Voltage Converter Board PLC Signal 

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Thanks for reply.

I saw similar products on several sites, including Amazon.

Almost all of them are made in China, of course it is hard to find such electric devise not made in China.

But I need to continue to purchase such device for at lease couple of years.

I am not afraid of bad product, but sudden stopping of supply.

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I checked with several local, Japanese, trading companies.  And so far, the only answers returned are, (1) same as suggested converter board, and (2) use of digital IO devices such as NI USB-6525 or PCI-6520.

So, I ordered converter board and optical isolator for testing.  I will put the test results on this topic, until then, I welcome more information on this topic.

If I need a solution for one occasion, I will use USB-6525, however, I am expecting the same pattern dozen times for the next couple of years.

[Buechsenschuetz]

Not really a board, but we are using modules from a german supplier https://www.leg-gmbh.de/en/html/signal_converter.html . They are intended for DIN rail mounting. Their stuff is mostly, if not completely, made in Germany, we are using their modules for several years now. 

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Thanks a lot.  This is not exact answer, but very useful information.

Unfortunately, these particular products are very difficult for me to purchase in Japan.

So, I will dig into the subject this the product info to find similar product in Japan.

If I find more info, I will put then on this topic.