RAMP_RATE=1.0
if RAMP_RATE is not None:
    print ("ramp rate:",RAMP_RATE)
    START_RAMP_RATE=ramp_rate.read()
    ramp_rate.write(RAMP_RATE)
    #ramp_rate.waitInPosition(RAMP_RATE,10000) # this is hanging when setting ramp rate to 1.0 T/min on 26.10.22. CP
    difference = RAMP_RATE - START_RAMP_RATE
    RAMP_RATE_PREC=RAMP_RATE/10
        #difference0 = difference # difference0 is the field offset before entering the stabilization loop
        #last_difference = difference # last_difference is updated during the stabilization loop
    while abs(difference) > RAMP_RATE_PREC:
        time.sleep(2.0)
        difference = ramp_rate.read() - RAMP_RATE
    print "Set ramp rate done."