You will have to connect the RO to DO (bg logic DO[…] = RO[…]
That DO will be configured to Rack 36, slot 0, start 1 making it NSI 1
Using the DO[…] as a NSI, tie it to a SIR in Safe I/O connect, then that is a viable disabling input
That all went good until I realized that I do not have Safe I/O Connect... I believe I saw another thread that mentioned that was an additional option that has to be paid for. Good to know how to write to NSI though!