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Old January 3rd, 2018, 02:47 PM   #6
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Originally Posted by the_msp View Post
I know the other (MPI) end. Service port -> X1 -> HMI

The DP goes to the main (S7-400) CPU, I don't think I have an adapter to get onto it.
Check to see if the 400 has a connection of the one similar to the pic I posted, most of the time you can just plug in and you dont need to unplug anything... also the HMI may have a double ended plug
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