Yes, that is true, the Smooth Stepper handles the e stop in a conflicting way with the Pendant Estop. So I sent a Revised Plugin to Peter Holman that has an option where you can UNCHECK a box that says "Use Pendant Estop", when you Uncheck that, the Estop function/button is disable on the Pendant, so your only using the SS Estop at that time.
The logic that the SS uses is mutually exclusive to the logic that the Pendant uses for estop functions, so unless he makes and option to do his estop logic differnt, then the above is the only way I know to make the two live togeter. If you still want to use the EStop button on the pendant, I would run a seperate pair of wires to it, along they serial cable (or make your on cable with 2 extra conductors past the serial 9), and then run thos pair into the SS, so in essence the Estop button would still "Work" from the pendant....
I DID leave the E Stop LED status function still working.......
scott