User`s manual

ProScale M150, M250 with LCD Digital Displays Page 37 of 48
Display Functions
Lock Mode
The user can “lock-out” the position offset adjustment functions (+, 0, - keys)
to prevent accidental changes of the current displayed position. To activate
the lock mode, press and hold the ON/OFF key and then momentarily press
the MODE key. The word LOCK on the LCD Display will turn on or off with
each lock/unlock operation. When the LOCK symbol is displayed, the +, 0,
and - keys will be inactive. On Displays with an auxiliary keypad: ABS and
INC modes have independent lock operations.
(Programming Parameter Pr3)
Segment Offset Adjustment
For Scales that are longer than 430mm (17 inches), multiple Scale pattern
segments are installed end-to-end on the aluminum extrusion. This provides
a quasi-absolute measurement capability in which the ReadHead can
calculate its position on any individual segment but cannot determine which
particular segment it is on. To solve this problem, the Display tracks which
segment the ReadHead is on by detecting the “joint” between one segment
and adjacent segments. In certain situations, the crossing from one segment
to another may not be detected by the Display. This may occur if the
ReadHead is disconnected from the Display (power source) and then moved
along the Scale to another segment. It may also occur if the ReadHead is
moved too quickly between segments. If the segment tracking count is
incorrect because of one of the above situations, the user can re-adjust the
Display to correct the error. This adjustment is referred to as the SEGMENT
OFFSET ADJUSTMENT. To add one segment value (430.08mm) to the
displayed value, press and hold the MODE key and then momentarily press
the + key. The displayed position will increase by 430.08mm (16.933
inches). To subtract one segment, 430.08mm, from the displayed value,
press and hold the MODE key and then momentarily press the - key.
(Programming Parameter Pr1)
Offset Addition
Offset addition allows the user to preset up to 3 different values that are
added to the Display reading when selected. This function allows the user to
quickly switch from one reference point to another such as in the case of
inside and outside measurements on the ProPanel measuring system.
To enable offset addition, programming parameter Pr10 must be set to 1.
The Display will flash 1, 2, 3 or 4 in the upper left corner of the LCD. Offset 1
is the ABS position with no offset added. Offset 2 is the ABS position with
parameter Pr11 added to it. Offsets 3 and 4 have similar functions with
parameters Pr12 and Pr13 added to the ABS position respectively.
To move from Offset 1 to 2, momentarily press the F1 key. Each depression
of the F1 key advances to the next offset. After offset 4, the Display will
move back to offset 1.
(Programming Parameters 9, 10, 11, 12 and 13)