Good morning, I would like to know how do I find out which inverter is terminating the uss network between the s7 200 and the 20 micromaster 420, voltage level at the ports between the terminals 14.15 and the 2-OV is 1.9V, the impedances between terminals 14-15 is at 212k with the inverters turned off, network terminator 120 ohm on the inverter, 200 ohm on port 0 of the CLP.