User`s manual

ProScale M150, M250 with LCD Digital Displays Page 35 of 48
position of the ReadHead. This is typically a position of zero (0) but may be
changed by using the + or - keys to provide an offset. Moving the ReadHead
in either direction will display the distance moved from the initial INC starting
point (plus any offset). To complete another incremental measurement from
the new position, momentarily press the ABS/INC key. The Display will
again change to 0 (or the previously programmed offset). To return to the
ABS mode, press and hold the ABS/INC key for approximately 3-4 seconds.
MONitor
The Display has the ability to monitor a measurement position to detect
position drift or measurement variance. To activate the monitoring mode,
position the ReadHead to the desired location and momentarily press the
MON key. The MON symbol will flash on the display to indicate that the
position monitor mode is active.
If the ReadHead moves outside the programmed tolerance (Pr18) the
reading flashes, indicating a drift condition. When the ReadHead is moved
back within the programmed tolerance, the displayed reading will stop
flashing.
To exit the monitor mode, momentarily press the MON key. The MON
symbol and the currently displayed position will stop flashing.
NOTE: Monitor mode can only be activated while in the ABS measuring
mode. If the ABS/INC key is depressed while monitoring, the position-
monitoring mode is automatically exited.
The Display can be programmed to automatically enter or exit the MONitor
mode based on elapsed time or movement of the ReadHead.
If the programmable auto monitor is enabled (Programming Parameter Pr19
set to 1), the Display will automatically enter monitor mode after either 30 or
60 seconds of no ReadHead motion. If the programmable auto monitor is
disabled, the ProScale will automatically exit monitor mode if the ReadHead
is moved beyond a programmable distance from the monitored position. This
option, in conjunction with auto monitor activation, allows the ProScale to be
kept in monitor mode without manually pressing the monitor key.
(Programming Parameters 18,19,20, 21)
HOLD
The Display provides a feature that allows the displayed position to be
“frozen” in time while the ReadHead is moved from its measuring position.
This allows measurements to be captured on the Display and held for later
viewing regardless of the current ReadHead position. To activate the HOLD
mode, momentarily press the HOLD key. The HOLD symbol will be shown in
the upper left corner of the Display. The currently displayed position and
selected key presses will be frozen at this point. To release the HOLD
feature, momentarily press the HOLD key again, or cycle power.