For a while I've been trying out sensor correction from the St1 T240s to the St2 CPS's, in X&Y. I thought this was working at ETMY, but not at ETMX, on closer inspection this seems to be not true. Looking into the model with Dave and JimB, we found that the wrong signals are being sent to the X and Z CPS, but Y is okay. It turns out the X CPS is getting the RZ T240, Y is receiving the Y T240, and Z is getting the X T240. Attached image shows the problem area, circled in red. The T240 signals in the T240 bus to St2 are inverted, the bus is labeled X, Y and Z, but if you follow the wires from the T240 cart matrix they go to RZ, Y, X, as I noted. Even worse, the X CPS is receiving not only the T240 RZ, it's receiving the T240 signal before we subtract the Z drive coupling. No wonder X didn't work.

I'm going to file a work permit, fix the bug and let the rest of the SEI group discuss when LLO should get the fix.