Thanks for the reply.
The limit I am referring to is the MV, PV limit of -50 to 2000 on the QnACPU types verses the other Q cpus that can do -32768 to 32767.
I need the greater range and positive to negative swing as I am using PID to control some motion.
So the MV value will adjust a 32 bit speed value to a motion card.
So with the QA1S6xB extension rack, do I still need a separate Q rack for the Q cpu and power supply or can they all coexist on one rack.
Has anyone ever tried using the MV limited PID (-50 to 2000) to combine heating and cooling via forward and reverse operation as one crosses the SV to be able to swing -2000 to +2000.