if key == "-h":
printHelp()
exit(1)
if len(args) != 1:
printHelp()
exit(1)
value = float(args[0])
socket = create_connection((hostname, port))
line = Line(socket)
dac = Adam4024(line, address)
for ch in range(4):
dac.setChannel(ch, 0)
dac.setChannelOutputRange(channel, 1)
piv = Piv(line)
kshd = Kshd(piv, 1)
s = kshd.getSpeed()
s.max = 2000
kshd.setSpeed(s)
kshd.go(-400000)
while value > 4:
dac.setChannel(ch, value)
sleep(0.1)
value -= 0.1
dac.setChannel(channel, 0)
kshd.stop()
