Print key setting:
Use and to set 0~2. Default setting: 0
P r F 0 If weight variation is beyond ±1d ~ ±10d,
key print totalized weight. Otherwise print current
weight. (d=division)
P r F 1 key print current weight. No totalization.
P r F 2 key print current weight if it is within the
lower and upper limits (ok range). No totalization.