MOTORS = [dummy_x, dummy_y]
SENSORS = [current]
RANGE_X = [0.0,2.0]
RANGE_Y = [0.0,1.0]
STEPS = [5, 10]
LATENCY = 0.1 
RELATIVE = False
ZIGZAG = True

try:
    ascan((MOTORS[0], MOTORS[1]), SENSORS, (RANGE_X[0], RANGE_Y[0]), (RANGE_X[1], RANGE_Y[1]), STEPS, LATENCY, RELATIVE, zigzag = ZIGZAG, \
          before_read=before_readout, after_read = after_readout, compression = True)
finally:
    after_scan()