Removed resetting pid_sum when PID is turned on (at beginning they are initialized as 0 already, and when we update the PID parameters or turn it off and on again, this does not reset the last values).

Fixed workload issue with two addition time variables, set DIO output at t=0, use for loop for AOut channels (PIDs) --> Loop might be removed again!

-modified adbasic code to record the 16 AIN channels at the times that are specified by labscript

test