Quote:
Originally Posted by Mike002
So if our team builds a custom IO expander (PCF8574) to connect to the CDIM on I2C buss is this allowed? 8 additional digital inputs/outputs gained very simply.
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RE11 and RE17 govern this, and connecting to the I2C bus sounds promising, but I don't know enough of your application to say anything with certainty. This would be worth an official Q&A.
That said, what on earth are you doing that one Core Device Interface Module (let alone that RE07 lets you use two) isn't enough?!